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    <link:label id="lab_amg_CommitmentAndContingenciesTable_D8CA1CA76CC8FB5EB9EC6F08DE7634DF_documentation_en-US" xlink:label="lab_amg_CommitmentAndContingenciesTable_D8CA1CA76CC8FB5EB9EC6F08DE7634DF" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Represents commitments and contingencies of the entity.</link:label>
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    <link:label id="lab_amg_InvestmentCommitmentAmount_1B0F21B4F2FF2BEEA5E26F08DE774721_terseLabel_en-US" xlink:label="lab_amg_InvestmentCommitmentAmount_1B0F21B4F2FF2BEEA5E26F08DE774721" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Co-investment commitments in partnership</link:label>
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    <link:label id="lab_amg_InvestmentCommitmentAmount_1B0F21B4F2FF2BEEA5E26F08DE774721_documentation_en-US" xlink:label="lab_amg_InvestmentCommitmentAmount_1B0F21B4F2FF2BEEA5E26F08DE774721" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">The amount that the entity agreed to co-invest in certain investment partnerships where the entity serves as the general partner.</link:label>
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    <link:label id="lab_amg_ReimbursableAmountOfInvestmentCommitments_E57CA471026BD06F64716F08DE7781CE_documentation_en-US" xlink:label="lab_amg_ReimbursableAmountOfInvestmentCommitments_E57CA471026BD06F64716F08DE7781CE" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Represents the contractual obligation to reimburse the entity for co-investments in investment partnerships.</link:label>
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    <link:label id="lab_amg_BusinessAcquisitionGoodwillAmortizationPeriodforTaxDeductibleAmount_BF94ED1A39CDA0B689416F08DE4B391C_label_en-US" xlink:label="lab_amg_BusinessAcquisitionGoodwillAmortizationPeriodforTaxDeductibleAmount_BF94ED1A39CDA0B689416F08DE4B391C" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Business Acquisition, Goodwill, Amortization Period for Tax Deductible Amount</link:label>
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    <link:label id="lab_us-gaap_FiniteLivedIntangibleAssetsFutureAmortizationExpenseAbstract_D37815CEFF401564E9A56F08DE4C3765_label_en-US" xlink:label="lab_us-gaap_FiniteLivedIntangibleAssetsFutureAmortizationExpenseAbstract_D37815CEFF401564E9A56F08DE4C3765" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Finite-Lived Intangible Assets, Net, Amortization Expense, Fiscal Year Maturity [Abstract]</link:label>
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    <link:label id="lab_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseRemainderOfFiscalYear_FACD4A3D4C8A3D2A4C2D6F08DE4CF022_terseLabel_en-US" xlink:label="lab_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseRemainderOfFiscalYear_FACD4A3D4C8A3D2A4C2D6F08DE4CF022" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Remainder of 2016</link:label>
    <link:label id="lab_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseRemainderOfFiscalYear_FACD4A3D4C8A3D2A4C2D6F08DE4CF022_label_en-US" xlink:label="lab_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseRemainderOfFiscalYear_FACD4A3D4C8A3D2A4C2D6F08DE4CF022" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Finite-Lived Intangible Assets, Amortization Expense, Remainder of Fiscal Year</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseRemainderOfFiscalYear" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseRemainderOfFiscalYear_FACD4A3D4C8A3D2A4C2D6F08DE4CF022" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseRemainderOfFiscalYear_FACD4A3D4C8A3D2A4C2D6F08DE4CF022" xlink:to="lab_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseRemainderOfFiscalYear_FACD4A3D4C8A3D2A4C2D6F08DE4CF022" xlink:type="arc" />
    <link:label id="lab_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo_C6AEE53FD9C43AF867266F08DE4C39F6_terseLabel_en-US" xlink:label="lab_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo_C6AEE53FD9C43AF867266F08DE4C39F6" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">2017</link:label>
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    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo_C6AEE53FD9C43AF867266F08DE4C39F6" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo_C6AEE53FD9C43AF867266F08DE4C39F6" xlink:to="lab_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo_C6AEE53FD9C43AF867266F08DE4C39F6" xlink:type="arc" />
    <link:label id="lab_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearThree_85E8D2EC0219E70FF4206F08DE4C20BB_terseLabel_en-US" xlink:label="lab_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearThree_85E8D2EC0219E70FF4206F08DE4C20BB" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">2018</link:label>
    <link:label id="lab_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearThree_85E8D2EC0219E70FF4206F08DE4C20BB_label_en-US" xlink:label="lab_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearThree_85E8D2EC0219E70FF4206F08DE4C20BB" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Finite-Lived Intangible Assets, Amortization Expense, Year Three</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearThree" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearThree_85E8D2EC0219E70FF4206F08DE4C20BB" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearThree_85E8D2EC0219E70FF4206F08DE4C20BB" xlink:to="lab_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearThree_85E8D2EC0219E70FF4206F08DE4C20BB" xlink:type="arc" />
    <link:label id="lab_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFour_1F5A0125D1F392464C0B6F08DE4CEE2C_terseLabel_en-US" xlink:label="lab_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFour_1F5A0125D1F392464C0B6F08DE4CEE2C" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">2019</link:label>
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    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFour" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFour_1F5A0125D1F392464C0B6F08DE4CEE2C" xlink:type="locator" />
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    <link:label id="lab_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFive_E2D53BE0B821723E7B656F08DE4C5049_terseLabel_en-US" xlink:label="lab_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFive_E2D53BE0B821723E7B656F08DE4C5049" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">2020</link:label>
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    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFive" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFive_E2D53BE0B821723E7B656F08DE4C5049" xlink:type="locator" />
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    <link:label id="lab_us-gaap_CurrentIncomeTaxExpenseBenefit_C1C83828255336C7E49B59677358CB12_label_en-US" xlink:label="lab_us-gaap_CurrentIncomeTaxExpenseBenefit_C1C83828255336C7E49B59677358CB12" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Current Income Tax Expense (Benefit)</link:label>
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    <link:label id="lab_us-gaap_DeferredOtherTaxExpenseBenefit_DA49F89F5ACF7AF8746659677358B088_terseLabel_en-US" xlink:label="lab_us-gaap_DeferredOtherTaxExpenseBenefit_DA49F89F5ACF7AF8746659677358B088" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Other deferred taxes</link:label>
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    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent_A4498A9B9878F19A40DA59677287C68B" xlink:to="lab_us-gaap_OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent_A4498A9B9878F19A40DA59677287C68B" xlink:type="arc" />
    <link:label id="lab_us-gaap_ScheduleOfGoodwillTable_50F0E5C8FABD8AB418115969303006B4_terseLabel_en-US" xlink:label="lab_us-gaap_ScheduleOfGoodwillTable_50F0E5C8FABD8AB418115969303006B4" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Schedule of Goodwill [Table]</link:label>
    <link:label id="lab_us-gaap_ScheduleOfGoodwillTable_50F0E5C8FABD8AB418115969303006B4_label_en-US" xlink:label="lab_us-gaap_ScheduleOfGoodwillTable_50F0E5C8FABD8AB418115969303006B4" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Schedule of Goodwill [Table]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_ScheduleOfGoodwillTable" xlink:label="loc_us-gaap_ScheduleOfGoodwillTable_50F0E5C8FABD8AB418115969303006B4" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ScheduleOfGoodwillTable_50F0E5C8FABD8AB418115969303006B4" xlink:to="lab_us-gaap_ScheduleOfGoodwillTable_50F0E5C8FABD8AB418115969303006B4" xlink:type="arc" />
    <link:label id="lab_us-gaap_StatementBusinessSegmentsAxis_1805353887E995D33EC059693031FAE7_terseLabel_en-US" xlink:label="lab_us-gaap_StatementBusinessSegmentsAxis_1805353887E995D33EC059693031FAE7" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Segments [Axis]</link:label>
    <link:label id="lab_us-gaap_StatementBusinessSegmentsAxis_1805353887E995D33EC059693031FAE7_label_en-US" xlink:label="lab_us-gaap_StatementBusinessSegmentsAxis_1805353887E995D33EC059693031FAE7" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Segments [Axis]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_StatementBusinessSegmentsAxis" xlink:label="loc_us-gaap_StatementBusinessSegmentsAxis_1805353887E995D33EC059693031FAE7" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_1805353887E995D33EC059693031FAE7" xlink:to="lab_us-gaap_StatementBusinessSegmentsAxis_1805353887E995D33EC059693031FAE7" xlink:type="arc" />
    <link:label id="lab_us-gaap_SegmentDomain_5D26BC58B6EBDF27CF5B59693031EB47_terseLabel_en-US" xlink:label="lab_us-gaap_SegmentDomain_5D26BC58B6EBDF27CF5B59693031EB47" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Segments [Domain]</link:label>
    <link:label id="lab_us-gaap_SegmentDomain_5D26BC58B6EBDF27CF5B59693031EB47_label_en-US" xlink:label="lab_us-gaap_SegmentDomain_5D26BC58B6EBDF27CF5B59693031EB47" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Segments [Domain]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_SegmentDomain" xlink:label="loc_us-gaap_SegmentDomain_5D26BC58B6EBDF27CF5B59693031EB47" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_SegmentDomain_5D26BC58B6EBDF27CF5B59693031EB47" xlink:to="lab_us-gaap_SegmentDomain_5D26BC58B6EBDF27CF5B59693031EB47" xlink:type="arc" />
    <link:label id="lab_amg_InstitutionalMember_12DD0800ACF98758D18A596930315E19_terseLabel_en-US" xlink:label="lab_amg_InstitutionalMember_12DD0800ACF98758D18A596930315E19" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Institutional</link:label>
    <link:label id="lab_amg_InstitutionalMember_12DD0800ACF98758D18A596930315E19_label_en-US" xlink:label="lab_amg_InstitutionalMember_12DD0800ACF98758D18A596930315E19" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Institutional [Member]</link:label>
    <link:label id="lab_amg_InstitutionalMember_12DD0800ACF98758D18A596930315E19_documentation_en-US" xlink:label="lab_amg_InstitutionalMember_12DD0800ACF98758D18A596930315E19" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Represents Institutional Net Worth, a business segment of the entity.</link:label>
    <link:loc xlink:href="amg-20160331.xsd#amg_InstitutionalMember" xlink:label="loc_amg_InstitutionalMember_12DD0800ACF98758D18A596930315E19" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_amg_InstitutionalMember_12DD0800ACF98758D18A596930315E19" xlink:to="lab_amg_InstitutionalMember_12DD0800ACF98758D18A596930315E19" xlink:type="arc" />
    <link:label id="lab_amg_MutualFundMember_03EC3292744A9790273E59693031D9E6_terseLabel_en-US" xlink:label="lab_amg_MutualFundMember_03EC3292744A9790273E59693031D9E6" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Mutual Fund</link:label>
    <link:label id="lab_amg_MutualFundMember_03EC3292744A9790273E59693031D9E6_label_en-US" xlink:label="lab_amg_MutualFundMember_03EC3292744A9790273E59693031D9E6" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Mutual Fund [Member]</link:label>
    <link:label id="lab_amg_MutualFundMember_03EC3292744A9790273E59693031D9E6_documentation_en-US" xlink:label="lab_amg_MutualFundMember_03EC3292744A9790273E59693031D9E6" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Represents Mutual Fund, a business segment of the entity.</link:label>
    <link:loc xlink:href="amg-20160331.xsd#amg_MutualFundMember" xlink:label="loc_amg_MutualFundMember_03EC3292744A9790273E59693031D9E6" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_amg_MutualFundMember_03EC3292744A9790273E59693031D9E6" xlink:to="lab_amg_MutualFundMember_03EC3292744A9790273E59693031D9E6" xlink:type="arc" />
    <link:label id="lab_amg_HighNetWorthMember_B7BAF34B600D83007BFC596930318E70_terseLabel_en-US" xlink:label="lab_amg_HighNetWorthMember_B7BAF34B600D83007BFC596930318E70" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">High Net Worth</link:label>
    <link:label id="lab_amg_HighNetWorthMember_B7BAF34B600D83007BFC596930318E70_label_en-US" xlink:label="lab_amg_HighNetWorthMember_B7BAF34B600D83007BFC596930318E70" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">High Net Worth [Member]</link:label>
    <link:label id="lab_amg_HighNetWorthMember_B7BAF34B600D83007BFC596930318E70_documentation_en-US" xlink:label="lab_amg_HighNetWorthMember_B7BAF34B600D83007BFC596930318E70" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Represents High Net Worth, a business segment of the entity.</link:label>
    <link:loc xlink:href="amg-20160331.xsd#amg_HighNetWorthMember" xlink:label="loc_amg_HighNetWorthMember_B7BAF34B600D83007BFC596930318E70" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_amg_HighNetWorthMember_B7BAF34B600D83007BFC596930318E70" xlink:to="lab_amg_HighNetWorthMember_B7BAF34B600D83007BFC596930318E70" xlink:type="arc" />
    <link:label id="lab_us-gaap_GoodwillLineItems_708AB7B7DC83CCDDB1F7596930312F9F_terseLabel_en-US" xlink:label="lab_us-gaap_GoodwillLineItems_708AB7B7DC83CCDDB1F7596930312F9F" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Goodwill</link:label>
    <link:label id="lab_us-gaap_GoodwillLineItems_708AB7B7DC83CCDDB1F7596930312F9F_label_en-US" xlink:label="lab_us-gaap_GoodwillLineItems_708AB7B7DC83CCDDB1F7596930312F9F" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Goodwill [Line Items]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_GoodwillLineItems" xlink:label="loc_us-gaap_GoodwillLineItems_708AB7B7DC83CCDDB1F7596930312F9F" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_GoodwillLineItems_708AB7B7DC83CCDDB1F7596930312F9F" xlink:to="lab_us-gaap_GoodwillLineItems_708AB7B7DC83CCDDB1F7596930312F9F" xlink:type="arc" />
    <link:label id="lab_us-gaap_GoodwillRollForward_C1E2317A6FA685647F0C5969303184B4_terseLabel_en-US" xlink:label="lab_us-gaap_GoodwillRollForward_C1E2317A6FA685647F0C5969303184B4" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Goodwill [Roll Forward]</link:label>
    <link:label id="lab_us-gaap_GoodwillRollForward_C1E2317A6FA685647F0C5969303184B4_label_en-US" xlink:label="lab_us-gaap_GoodwillRollForward_C1E2317A6FA685647F0C5969303184B4" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Goodwill [Roll Forward]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_GoodwillRollForward" xlink:label="loc_us-gaap_GoodwillRollForward_C1E2317A6FA685647F0C5969303184B4" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_GoodwillRollForward_C1E2317A6FA685647F0C5969303184B4" xlink:to="lab_us-gaap_GoodwillRollForward_C1E2317A6FA685647F0C5969303184B4" xlink:type="arc" />
    <link:label id="lab_us-gaap_Goodwill_F54552E6BE6582EE2C8459693031B405_periodStartLabel_en-US" xlink:label="lab_us-gaap_Goodwill_F54552E6BE6582EE2C8459693031B405" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel" xlink:type="resource" xml:lang="en-US">Beginning balance</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_Goodwill" xlink:label="loc_us-gaap_Goodwill_F54552E6BE6582EE2C8459693031B405" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_Goodwill_F54552E6BE6582EE2C8459693031B405" xlink:to="lab_us-gaap_Goodwill_F54552E6BE6582EE2C8459693031B405" xlink:type="arc" />
    <link:label id="lab_us-gaap_GoodwillTranslationAdjustments_0FA46C2A4E1EEC9CBF9659693031309D_terseLabel_en-US" xlink:label="lab_us-gaap_GoodwillTranslationAdjustments_0FA46C2A4E1EEC9CBF9659693031309D" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Foreign currency translation</link:label>
    <link:label id="lab_us-gaap_GoodwillTranslationAdjustments_0FA46C2A4E1EEC9CBF9659693031309D_label_en-US" xlink:label="lab_us-gaap_GoodwillTranslationAdjustments_0FA46C2A4E1EEC9CBF9659693031309D" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Goodwill, Translation Adjustments</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_GoodwillTranslationAdjustments" xlink:label="loc_us-gaap_GoodwillTranslationAdjustments_0FA46C2A4E1EEC9CBF9659693031309D" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_GoodwillTranslationAdjustments_0FA46C2A4E1EEC9CBF9659693031309D" xlink:to="lab_us-gaap_GoodwillTranslationAdjustments_0FA46C2A4E1EEC9CBF9659693031309D" xlink:type="arc" />
    <link:label id="lab_us-gaap_Goodwill_AE36262490F5D92BB103596930316C69_periodEndLabel_en-US" xlink:label="lab_us-gaap_Goodwill_AE36262490F5D92BB103596930316C69" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel" xlink:type="resource" xml:lang="en-US">Ending balance</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_Goodwill" xlink:label="loc_us-gaap_Goodwill_AE36262490F5D92BB103596930316C69" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_Goodwill_AE36262490F5D92BB103596930316C69" xlink:to="lab_us-gaap_Goodwill_AE36262490F5D92BB103596930316C69" xlink:type="arc" />
    <link:label id="lab_us-gaap_IncomeTaxReconciliationRepatriationOfForeignEarnings_34BA5555B4666AE1AACC932C915635C8_terseLabel_en-US" xlink:label="lab_us-gaap_IncomeTaxReconciliationRepatriationOfForeignEarnings_34BA5555B4666AE1AACC932C915635C8" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Indefinite reinvestment of non-US earnings</link:label>
    <link:label id="lab_us-gaap_IncomeTaxReconciliationRepatriationOfForeignEarnings_34BA5555B4666AE1AACC932C915635C8_label_en-US" xlink:label="lab_us-gaap_IncomeTaxReconciliationRepatriationOfForeignEarnings_34BA5555B4666AE1AACC932C915635C8" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Effective Income Tax Rate Reconciliation, Repatriation of Foreign Earnings, Amount</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_IncomeTaxReconciliationRepatriationOfForeignEarnings" xlink:label="loc_us-gaap_IncomeTaxReconciliationRepatriationOfForeignEarnings_34BA5555B4666AE1AACC932C915635C8" xlink:type="locator" />
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    <link:label id="lab_amg_UnrecognizedTaxBenefitsIncludingTaxInterestAndRelatedChargesAccrued_C5F88C0AA1549B37C210932C9156F16D_terseLabel_en-US" xlink:label="lab_amg_UnrecognizedTaxBenefitsIncludingTaxInterestAndRelatedChargesAccrued_C5F88C0AA1549B37C210932C9156F16D" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Liability for uncertain tax positions including interest and related charges</link:label>
    <link:label id="lab_amg_UnrecognizedTaxBenefitsIncludingTaxInterestAndRelatedChargesAccrued_C5F88C0AA1549B37C210932C9156F16D_label_en-US" xlink:label="lab_amg_UnrecognizedTaxBenefitsIncludingTaxInterestAndRelatedChargesAccrued_C5F88C0AA1549B37C210932C9156F16D" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Unrecognized Tax Benefits, Including Tax Interest and Related Charges Accrued</link:label>
    <link:label id="lab_amg_UnrecognizedTaxBenefitsIncludingTaxInterestAndRelatedChargesAccrued_C5F88C0AA1549B37C210932C9156F16D_documentation_en-US" xlink:label="lab_amg_UnrecognizedTaxBenefitsIncludingTaxInterestAndRelatedChargesAccrued_C5F88C0AA1549B37C210932C9156F16D" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">The gross amount of unrecognized tax benefits, including interest and related charges, pertaining to uncertain tax positions taken in tax returns as of the balance sheet date.</link:label>
    <link:loc xlink:href="amg-20160331.xsd#amg_UnrecognizedTaxBenefitsIncludingTaxInterestAndRelatedChargesAccrued" xlink:label="loc_amg_UnrecognizedTaxBenefitsIncludingTaxInterestAndRelatedChargesAccrued_C5F88C0AA1549B37C210932C9156F16D" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_amg_UnrecognizedTaxBenefitsIncludingTaxInterestAndRelatedChargesAccrued_C5F88C0AA1549B37C210932C9156F16D" xlink:to="lab_amg_UnrecognizedTaxBenefitsIncludingTaxInterestAndRelatedChargesAccrued_C5F88C0AA1549B37C210932C9156F16D" xlink:type="arc" />
    <link:label id="lab_us-gaap_UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccrued_4A28631EAF5B3F81A9AA932C9156A810_terseLabel_en-US" xlink:label="lab_us-gaap_UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccrued_4A28631EAF5B3F81A9AA932C9156A810" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Accrued income tax interest and related charges</link:label>
    <link:label id="lab_us-gaap_UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccrued_4A28631EAF5B3F81A9AA932C9156A810_label_en-US" xlink:label="lab_us-gaap_UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccrued_4A28631EAF5B3F81A9AA932C9156A810" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Unrecognized Tax Benefits, Income Tax Penalties and Interest Accrued</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccrued" xlink:label="loc_us-gaap_UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccrued_4A28631EAF5B3F81A9AA932C9156A810" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccrued_4A28631EAF5B3F81A9AA932C9156A810" xlink:to="lab_us-gaap_UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccrued_4A28631EAF5B3F81A9AA932C9156A810" xlink:type="arc" />
    <link:label id="lab_us-gaap_UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate_1DACD9B2DB8A8A477F4F9346FD11E6D9_terseLabel_en-US" xlink:label="lab_us-gaap_UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate_1DACD9B2DB8A8A477F4F9346FD11E6D9" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Unrecognized tax benefits that would impact effective tax rate</link:label>
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    <link:loc xlink:href="amg-20160331.xsd#amg_IntangibleAssetsRollForward" xlink:label="loc_amg_IntangibleAssetsRollForward_97E217A8152F295F01006F08DE523775" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_amg_IntangibleAssetsRollForward_97E217A8152F295F01006F08DE523775" xlink:to="lab_amg_IntangibleAssetsRollForward_97E217A8152F295F01006F08DE523775" xlink:type="arc" />
    <link:label id="lab_us-gaap_IntangibleAssetsNetExcludingGoodwill_459D451610017CB18EC96F08DE52E04E_periodStartLabel_en-US" xlink:label="lab_us-gaap_IntangibleAssetsNetExcludingGoodwill_459D451610017CB18EC96F08DE52E04E" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel" xlink:type="resource" xml:lang="en-US">Beginning balance, net</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_IntangibleAssetsNetExcludingGoodwill" xlink:label="loc_us-gaap_IntangibleAssetsNetExcludingGoodwill_459D451610017CB18EC96F08DE52E04E" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_IntangibleAssetsNetExcludingGoodwill_459D451610017CB18EC96F08DE52E04E" xlink:to="lab_us-gaap_IntangibleAssetsNetExcludingGoodwill_459D451610017CB18EC96F08DE52E04E" xlink:type="arc" />
    <link:label id="lab_us-gaap_ImpairmentOfIntangibleAssetsExcludingGoodwill_E7B62970BFE43D70849A6F08DE523CF2_negatedLabel_en-US" xlink:label="lab_us-gaap_ImpairmentOfIntangibleAssetsExcludingGoodwill_E7B62970BFE43D70849A6F08DE523CF2" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US">Amortization and impairments</link:label>
    <link:label id="lab_us-gaap_ImpairmentOfIntangibleAssetsExcludingGoodwill_E7B62970BFE43D70849A6F08DE523CF2_label_en-US" xlink:label="lab_us-gaap_ImpairmentOfIntangibleAssetsExcludingGoodwill_E7B62970BFE43D70849A6F08DE523CF2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Impairment of Intangible Assets (Excluding Goodwill)</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_ImpairmentOfIntangibleAssetsExcludingGoodwill" xlink:label="loc_us-gaap_ImpairmentOfIntangibleAssetsExcludingGoodwill_E7B62970BFE43D70849A6F08DE523CF2" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ImpairmentOfIntangibleAssetsExcludingGoodwill_E7B62970BFE43D70849A6F08DE523CF2" xlink:to="lab_us-gaap_ImpairmentOfIntangibleAssetsExcludingGoodwill_E7B62970BFE43D70849A6F08DE523CF2" xlink:type="arc" />
    <link:label id="lab_amg_IntangibleAssetsNetExcludingGoodwillTranslationAdjustments_1D462CDDE44A8493C9C76F08DE52E774_terseLabel_en-US" xlink:label="lab_amg_IntangibleAssetsNetExcludingGoodwillTranslationAdjustments_1D462CDDE44A8493C9C76F08DE52E774" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Foreign currency translation</link:label>
    <link:label id="lab_amg_IntangibleAssetsNetExcludingGoodwillTranslationAdjustments_1D462CDDE44A8493C9C76F08DE52E774_label_en-US" xlink:label="lab_amg_IntangibleAssetsNetExcludingGoodwillTranslationAdjustments_1D462CDDE44A8493C9C76F08DE52E774" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Intangible Assets Net Excluding Goodwill Translation Adjustments</link:label>
    <link:label id="lab_amg_IntangibleAssetsNetExcludingGoodwillTranslationAdjustments_1D462CDDE44A8493C9C76F08DE52E774_documentation_en-US" xlink:label="lab_amg_IntangibleAssetsNetExcludingGoodwillTranslationAdjustments_1D462CDDE44A8493C9C76F08DE52E774" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Represents the amount of increase (decrease) to assets, excluding financial assets and goodwill, for foreign currency translation adjustments.</link:label>
    <link:loc xlink:href="amg-20160331.xsd#amg_IntangibleAssetsNetExcludingGoodwillTranslationAdjustments" xlink:label="loc_amg_IntangibleAssetsNetExcludingGoodwillTranslationAdjustments_1D462CDDE44A8493C9C76F08DE52E774" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_amg_IntangibleAssetsNetExcludingGoodwillTranslationAdjustments_1D462CDDE44A8493C9C76F08DE52E774" xlink:to="lab_amg_IntangibleAssetsNetExcludingGoodwillTranslationAdjustments_1D462CDDE44A8493C9C76F08DE52E774" xlink:type="arc" />
    <link:label id="lab_us-gaap_IntangibleAssetsNetExcludingGoodwill_7D3A5283D997C412E1806F08DE524F03_periodEndLabel_en-US" xlink:label="lab_us-gaap_IntangibleAssetsNetExcludingGoodwill_7D3A5283D997C412E1806F08DE524F03" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel" xlink:type="resource" xml:lang="en-US">Ending balance, net</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_IntangibleAssetsNetExcludingGoodwill" xlink:label="loc_us-gaap_IntangibleAssetsNetExcludingGoodwill_7D3A5283D997C412E1806F08DE524F03" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_IntangibleAssetsNetExcludingGoodwill_7D3A5283D997C412E1806F08DE524F03" xlink:to="lab_us-gaap_IntangibleAssetsNetExcludingGoodwill_7D3A5283D997C412E1806F08DE524F03" xlink:type="arc" />
    <link:label id="lab_amg_RedeemableNoncontrollingInterestRollForward_1B39C93317293A96BA6F77C6F8F8F128_terseLabel_en-US" xlink:label="lab_amg_RedeemableNoncontrollingInterestRollForward_1B39C93317293A96BA6F77C6F8F8F128" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Changes in redeemable non-controlling interests during the period</link:label>
    <link:label id="lab_amg_RedeemableNoncontrollingInterestRollForward_1B39C93317293A96BA6F77C6F8F8F128_label_en-US" xlink:label="lab_amg_RedeemableNoncontrollingInterestRollForward_1B39C93317293A96BA6F77C6F8F8F128" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Redeemable Noncontrolling Interest [Roll Forward]</link:label>
    <link:label id="lab_amg_RedeemableNoncontrollingInterestRollForward_1B39C93317293A96BA6F77C6F8F8F128_documentation_en-US" xlink:label="lab_amg_RedeemableNoncontrollingInterestRollForward_1B39C93317293A96BA6F77C6F8F8F128" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">-- None. No documentation exists for this element. --</link:label>
    <link:loc xlink:href="amg-20160331.xsd#amg_RedeemableNoncontrollingInterestRollForward" xlink:label="loc_amg_RedeemableNoncontrollingInterestRollForward_1B39C93317293A96BA6F77C6F8F8F128" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_amg_RedeemableNoncontrollingInterestRollForward_1B39C93317293A96BA6F77C6F8F8F128" xlink:to="lab_amg_RedeemableNoncontrollingInterestRollForward_1B39C93317293A96BA6F77C6F8F8F128" xlink:type="arc" />
    <link:label id="lab_us-gaap_RedeemableNoncontrollingInterestEquityCarryingAmount_9C9CBEC9388BC5DDE85D77C6F8F8023C_periodStartLabel_en-US" xlink:label="lab_us-gaap_RedeemableNoncontrollingInterestEquityCarryingAmount_9C9CBEC9388BC5DDE85D77C6F8F8023C" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel" xlink:type="resource" xml:lang="en-US">Balance, as of December 31, 2015</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_RedeemableNoncontrollingInterestEquityCarryingAmount" xlink:label="loc_us-gaap_RedeemableNoncontrollingInterestEquityCarryingAmount_9C9CBEC9388BC5DDE85D77C6F8F8023C" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_RedeemableNoncontrollingInterestEquityCarryingAmount_9C9CBEC9388BC5DDE85D77C6F8F8023C" xlink:to="lab_us-gaap_RedeemableNoncontrollingInterestEquityCarryingAmount_9C9CBEC9388BC5DDE85D77C6F8F8023C" xlink:type="arc" />
    <link:label id="lab_amg_NoncontrollingInterestIncreasedecreaseAttributabletoConsolidatedPartnerships_E976877F81D35FE1115977C6F8F83FB8_terseLabel_en-US" xlink:label="lab_amg_NoncontrollingInterestIncreasedecreaseAttributabletoConsolidatedPartnerships_E976877F81D35FE1115977C6F8F83FB8" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Increase attributable to consolidated products</link:label>
    <link:label id="lab_amg_NoncontrollingInterestIncreasedecreaseAttributabletoConsolidatedPartnerships_E976877F81D35FE1115977C6F8F83FB8_label_en-US" xlink:label="lab_amg_NoncontrollingInterestIncreasedecreaseAttributabletoConsolidatedPartnerships_E976877F81D35FE1115977C6F8F83FB8" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Noncontrolling Interest, Increase (decrease) Attributable to Consolidated Partnerships</link:label>
    <link:label id="lab_amg_NoncontrollingInterestIncreasedecreaseAttributabletoConsolidatedPartnerships_E976877F81D35FE1115977C6F8F83FB8_documentation_en-US" xlink:label="lab_amg_NoncontrollingInterestIncreasedecreaseAttributabletoConsolidatedPartnerships_E976877F81D35FE1115977C6F8F83FB8" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Noncontrolling Interest, Increase (decrease) Attributable to Consolidated Partnerships</link:label>
    <link:loc xlink:href="amg-20160331.xsd#amg_NoncontrollingInterestIncreasedecreaseAttributabletoConsolidatedPartnerships" xlink:label="loc_amg_NoncontrollingInterestIncreasedecreaseAttributabletoConsolidatedPartnerships_E976877F81D35FE1115977C6F8F83FB8" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_amg_NoncontrollingInterestIncreasedecreaseAttributabletoConsolidatedPartnerships_E976877F81D35FE1115977C6F8F83FB8" xlink:to="lab_amg_NoncontrollingInterestIncreasedecreaseAttributabletoConsolidatedPartnerships_E976877F81D35FE1115977C6F8F83FB8" xlink:type="arc" />
    <link:label id="lab_us-gaap_PaymentsForRepurchaseOfRedeemableNoncontrollingInterest_EE4B1A134F7EEF6A010777C6F8F8EBFB_negatedLabel_en-US" xlink:label="lab_us-gaap_PaymentsForRepurchaseOfRedeemableNoncontrollingInterest_EE4B1A134F7EEF6A010777C6F8F8EBFB" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US">Repurchases of redeemable Affiliate equity</link:label>
    <link:label id="lab_us-gaap_PaymentsForRepurchaseOfRedeemableNoncontrollingInterest_EE4B1A134F7EEF6A010777C6F8F8EBFB_label_en-US" xlink:label="lab_us-gaap_PaymentsForRepurchaseOfRedeemableNoncontrollingInterest_EE4B1A134F7EEF6A010777C6F8F8EBFB" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Payments for Repurchase of Redeemable Noncontrolling Interest</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_PaymentsForRepurchaseOfRedeemableNoncontrollingInterest" xlink:label="loc_us-gaap_PaymentsForRepurchaseOfRedeemableNoncontrollingInterest_EE4B1A134F7EEF6A010777C6F8F8EBFB" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_PaymentsForRepurchaseOfRedeemableNoncontrollingInterest_EE4B1A134F7EEF6A010777C6F8F8EBFB" xlink:to="lab_us-gaap_PaymentsForRepurchaseOfRedeemableNoncontrollingInterest_EE4B1A134F7EEF6A010777C6F8F8EBFB" xlink:type="arc" />
    <link:label id="lab_amg_NoncontrollingInterestDecreasefromTransferstoNoncontrollingInterestHolders_8475E7974E81A073DCA177C6F8F8BEC5_terseLabel_en-US" xlink:label="lab_amg_NoncontrollingInterestDecreasefromTransferstoNoncontrollingInterestHolders_8475E7974E81A073DCA177C6F8F8BEC5" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Transfers from Non-controlling interests</link:label>
    <link:label id="lab_amg_NoncontrollingInterestDecreasefromTransferstoNoncontrollingInterestHolders_8475E7974E81A073DCA177C6F8F8BEC5_label_en-US" xlink:label="lab_amg_NoncontrollingInterestDecreasefromTransferstoNoncontrollingInterestHolders_8475E7974E81A073DCA177C6F8F8BEC5" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Noncontrolling Interest, Decrease from Transfers to Noncontrolling Interest Holders</link:label>
    <link:label id="lab_amg_NoncontrollingInterestDecreasefromTransferstoNoncontrollingInterestHolders_8475E7974E81A073DCA177C6F8F8BEC5_documentation_en-US" xlink:label="lab_amg_NoncontrollingInterestDecreasefromTransferstoNoncontrollingInterestHolders_8475E7974E81A073DCA177C6F8F8BEC5" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Noncontrolling Interest, Decrease from Transfers to Noncontrolling Interest Holders</link:label>
    <link:loc xlink:href="amg-20160331.xsd#amg_NoncontrollingInterestDecreasefromTransferstoNoncontrollingInterestHolders" xlink:label="loc_amg_NoncontrollingInterestDecreasefromTransferstoNoncontrollingInterestHolders_8475E7974E81A073DCA177C6F8F8BEC5" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_amg_NoncontrollingInterestDecreasefromTransferstoNoncontrollingInterestHolders_8475E7974E81A073DCA177C6F8F8BEC5" xlink:to="lab_amg_NoncontrollingInterestDecreasefromTransferstoNoncontrollingInterestHolders_8475E7974E81A073DCA177C6F8F8BEC5" xlink:type="arc" />
    <link:label id="lab_amg_RedeemableNoncontrollingInterestChangeInRedemptionValue_245F4BB571562417F19677C6F8F8F874_terseLabel_en-US" xlink:label="lab_amg_RedeemableNoncontrollingInterestChangeInRedemptionValue_245F4BB571562417F19677C6F8F8F874" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Changes in redemption value</link:label>
    <link:label id="lab_amg_RedeemableNoncontrollingInterestChangeInRedemptionValue_245F4BB571562417F19677C6F8F8F874_label_en-US" xlink:label="lab_amg_RedeemableNoncontrollingInterestChangeInRedemptionValue_245F4BB571562417F19677C6F8F8F874" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Redeemable Noncontrolling Interest Change in Redemption Value</link:label>
    <link:label id="lab_amg_RedeemableNoncontrollingInterestChangeInRedemptionValue_245F4BB571562417F19677C6F8F8F874_documentation_en-US" xlink:label="lab_amg_RedeemableNoncontrollingInterestChangeInRedemptionValue_245F4BB571562417F19677C6F8F8F874" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Increase (decrease) in redeemable non-controlling interests during the period as a result of a change in the redemption value.</link:label>
    <link:loc xlink:href="amg-20160331.xsd#amg_RedeemableNoncontrollingInterestChangeInRedemptionValue" xlink:label="loc_amg_RedeemableNoncontrollingInterestChangeInRedemptionValue_245F4BB571562417F19677C6F8F8F874" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_amg_RedeemableNoncontrollingInterestChangeInRedemptionValue_245F4BB571562417F19677C6F8F8F874" xlink:to="lab_amg_RedeemableNoncontrollingInterestChangeInRedemptionValue_245F4BB571562417F19677C6F8F8F874" xlink:type="arc" />
    <link:label id="lab_us-gaap_RedeemableNoncontrollingInterestEquityCarryingAmount_DACC9785AB35F59DF30F77C6F8F8A1D5_periodEndLabel_en-US" xlink:label="lab_us-gaap_RedeemableNoncontrollingInterestEquityCarryingAmount_DACC9785AB35F59DF30F77C6F8F8A1D5" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel" xlink:type="resource" xml:lang="en-US">Balance, as of March 31, 2016</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_RedeemableNoncontrollingInterestEquityCarryingAmount" xlink:label="loc_us-gaap_RedeemableNoncontrollingInterestEquityCarryingAmount_DACC9785AB35F59DF30F77C6F8F8A1D5" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_RedeemableNoncontrollingInterestEquityCarryingAmount_DACC9785AB35F59DF30F77C6F8F8A1D5" xlink:to="lab_us-gaap_RedeemableNoncontrollingInterestEquityCarryingAmount_DACC9785AB35F59DF30F77C6F8F8A1D5" xlink:type="arc" />
    <link:label id="lab_us-gaap_FairValueInvestmentsEntitiesThatCalculateNetAssetValuePerShareTable_A28BE9D987FEF04B2B8D96B5C3F68309_terseLabel_en-US" xlink:label="lab_us-gaap_FairValueInvestmentsEntitiesThatCalculateNetAssetValuePerShareTable_A28BE9D987FEF04B2B8D96B5C3F68309" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Table]</link:label>
    <link:label id="lab_us-gaap_FairValueInvestmentsEntitiesThatCalculateNetAssetValuePerShareTable_A28BE9D987FEF04B2B8D96B5C3F68309_label_en-US" xlink:label="lab_us-gaap_FairValueInvestmentsEntitiesThatCalculateNetAssetValuePerShareTable_A28BE9D987FEF04B2B8D96B5C3F68309" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Table]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_FairValueInvestmentsEntitiesThatCalculateNetAssetValuePerShareTable" xlink:label="loc_us-gaap_FairValueInvestmentsEntitiesThatCalculateNetAssetValuePerShareTable_A28BE9D987FEF04B2B8D96B5C3F68309" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FairValueInvestmentsEntitiesThatCalculateNetAssetValuePerShareTable_A28BE9D987FEF04B2B8D96B5C3F68309" xlink:to="lab_us-gaap_FairValueInvestmentsEntitiesThatCalculateNetAssetValuePerShareTable_A28BE9D987FEF04B2B8D96B5C3F68309" xlink:type="arc" />
    <link:label id="lab_us-gaap_InvestmentTypeAxis_B5AC563255063A3E940196B5C3F63760_terseLabel_en-US" xlink:label="lab_us-gaap_InvestmentTypeAxis_B5AC563255063A3E940196B5C3F63760" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Investment Type [Axis]</link:label>
    <link:label id="lab_us-gaap_InvestmentTypeAxis_B5AC563255063A3E940196B5C3F63760_label_en-US" xlink:label="lab_us-gaap_InvestmentTypeAxis_B5AC563255063A3E940196B5C3F63760" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Investment Type [Axis]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_InvestmentTypeAxis" xlink:label="loc_us-gaap_InvestmentTypeAxis_B5AC563255063A3E940196B5C3F63760" xlink:type="locator" />
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    <link:label id="lab_amg_NoncontrollingInterestDecreasefromRedemptions_22ABE6B60468D964989077C58BBF0B85_negatedTerseLabel_en-US" xlink:label="lab_amg_NoncontrollingInterestDecreasefromRedemptions_22ABE6B60468D964989077C58BBF0B85" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xml:lang="en-US">Changes in Redemption value of Redeemable non-controlling interests</link:label>
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    <link:label id="lab_amg_NoncontrollingInterestDecreasefromRedemptions_22ABE6B60468D964989077C58BBF0B85_documentation_en-US" xlink:label="lab_amg_NoncontrollingInterestDecreasefromRedemptions_22ABE6B60468D964989077C58BBF0B85" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Noncontrolling Interest, Decrease from Redemptions</link:label>
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    <link:label id="lab_amg_NoncontrollingInterestDecreasefromTransferstoNoncontrollingInterestHolders_90A58476497D15457C5877C58BBF8669_negatedTerseLabel_en-US" xlink:label="lab_amg_NoncontrollingInterestDecreasefromTransferstoNoncontrollingInterestHolders_90A58476497D15457C5877C58BBF8669" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xml:lang="en-US">Transfers to Redeemable non-controlling interests</link:label>
    <link:loc xlink:href="amg-20160331.xsd#amg_NoncontrollingInterestDecreasefromTransferstoNoncontrollingInterestHolders" xlink:label="loc_amg_NoncontrollingInterestDecreasefromTransferstoNoncontrollingInterestHolders_90A58476497D15457C5877C58BBF8669" xlink:type="locator" />
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    <link:label id="lab_amg_NoncontrollingInterestIncreasefromContributionsfromAffiliate_BF42A946D0C80FB47E7977C58BBFC22F_terseLabel_en-US" xlink:label="lab_amg_NoncontrollingInterestIncreasefromContributionsfromAffiliate_BF42A946D0C80FB47E7977C58BBFC22F" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Capital Contributions by Affiliate equity holders</link:label>
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    <link:label id="lab_amg_NoncontrollingInterestIncreasefromContributionsfromAffiliate_BF42A946D0C80FB47E7977C58BBFC22F_documentation_en-US" xlink:label="lab_amg_NoncontrollingInterestIncreasefromContributionsfromAffiliate_BF42A946D0C80FB47E7977C58BBFC22F" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Noncontrolling Interest, Increase from Contributions from Affiliate</link:label>
    <link:loc xlink:href="amg-20160331.xsd#amg_NoncontrollingInterestIncreasefromContributionsfromAffiliate" xlink:label="loc_amg_NoncontrollingInterestIncreasefromContributionsfromAffiliate_BF42A946D0C80FB47E7977C58BBFC22F" xlink:type="locator" />
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    <link:label id="lab_us-gaap_CommonStockSharesOutstanding_C64AC1B02E505D7D236D77C58BBF70EF_periodEndLabel_en-US" xlink:label="lab_us-gaap_CommonStockSharesOutstanding_C64AC1B02E505D7D236D77C58BBF70EF" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel" xlink:type="resource" xml:lang="en-US">Ending Balance (in shares)</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_CommonStockSharesOutstanding" xlink:label="loc_us-gaap_CommonStockSharesOutstanding_C64AC1B02E505D7D236D77C58BBF70EF" xlink:type="locator" />
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    <link:label id="lab_amg_VariableInterestEntitiesDisclosureTextBlock_CE4CC1C745D3D31CCB326F08DE7F664A_terseLabel_en-US" xlink:label="lab_amg_VariableInterestEntitiesDisclosureTextBlock_CE4CC1C745D3D31CCB326F08DE7F664A" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Variable Interest Entities</link:label>
    <link:label id="lab_amg_VariableInterestEntitiesDisclosureTextBlock_CE4CC1C745D3D31CCB326F08DE7F664A_label_en-US" xlink:label="lab_amg_VariableInterestEntitiesDisclosureTextBlock_CE4CC1C745D3D31CCB326F08DE7F664A" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Variable Interest Entities Disclosure [Text Block]</link:label>
    <link:label id="lab_amg_VariableInterestEntitiesDisclosureTextBlock_CE4CC1C745D3D31CCB326F08DE7F664A_documentation_en-US" xlink:label="lab_amg_VariableInterestEntitiesDisclosureTextBlock_CE4CC1C745D3D31CCB326F08DE7F664A" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">This element represents the disclosure of variable interest entities (VIE), including, but not limited to the nature, purpose, size, and activities of the VIE, the carrying amount and classification of consolidated assets that are collateral for the VIE's obligations, lack of recourse if creditors (or beneficial interest holders) of a consolidated VIE have no recourse to the general credit of the primary beneficiary. Which also include information related to Sponsored Investment Funds and Trust Preferred Vehicles related to variable interest entities (VIE).</link:label>
    <link:loc xlink:href="amg-20160331.xsd#amg_VariableInterestEntitiesDisclosureTextBlock" xlink:label="loc_amg_VariableInterestEntitiesDisclosureTextBlock_CE4CC1C745D3D31CCB326F08DE7F664A" xlink:type="locator" />
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    <link:label id="lab_amg_SponsoredInvestmentFundsMember_883BDB9AFC6923ABD20B96C998850334_terseLabel_en-US" xlink:label="lab_amg_SponsoredInvestmentFundsMember_883BDB9AFC6923ABD20B96C998850334" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Sponsored Investment Entities</link:label>
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    <link:label id="lab_amg_SponsoredInvestmentFundsMember_883BDB9AFC6923ABD20B96C998850334_documentation_en-US" xlink:label="lab_amg_SponsoredInvestmentFundsMember_883BDB9AFC6923ABD20B96C998850334" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Represents investment funds in to which the entity is not the primary beneficiary of these VIEs.</link:label>
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    <link:label id="lab_amg_VariableInterestEntitiesPreviouslyAccountedforUndertheEquityMethodMember_0F935CFD966CD9DE36EA96C8747E04FF_terseLabel_en-US" xlink:label="lab_amg_VariableInterestEntitiesPreviouslyAccountedforUndertheEquityMethodMember_0F935CFD966CD9DE36EA96C8747E04FF" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Variable Interest Entities Previously Accounted for Under the Equity Method</link:label>
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    <link:label id="lab_us-gaap_VariableInterestEntityLineItems_4FE5111ABC53D685098C96B5C46D230D_terseLabel_en-US" xlink:label="lab_us-gaap_VariableInterestEntityLineItems_4FE5111ABC53D685098C96B5C46D230D" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Variable Interest Entities</link:label>
    <link:label id="lab_us-gaap_VariableInterestEntityLineItems_4FE5111ABC53D685098C96B5C46D230D_label_en-US" xlink:label="lab_us-gaap_VariableInterestEntityLineItems_4FE5111ABC53D685098C96B5C46D230D" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Variable Interest Entity [Line Items]</link:label>
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