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Investments in Marketable Securities | 6 Months Ended
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Jun. 30, 2020
Marketable Securities [Abstract] |
Investments in Marketable Securities | Investments in Marketable Securities The following is a summary of the cost, gross unrealized gains, gross unrealized losses and fair value of Investments in marketable securities:
| December 31, 2019 |  | June 30, 2020
Cost | $ | 57.9 |  |  | $ | 62.3 |
Unrealized gains | 2.1 |  |  | 1.7 |
Unrealized losses | (0.6 | ) |  | (2.6 | )
Fair value | $ | 59.4 |  |  | $ | 61.4 |
The Company recorded proceeds of $3.4 million and $18.5 million for the three and six months ended June 30, 2019, respectively, and $37.9 million and $64.1 million for the three and six months ended June 30, 2020, respectively, from the sale of investments in marketable securities. The Company recorded net gains (losses) of $0.2 million and $0.7 million for the three and six months ended June 30, 2019, respectively, and $0.9 million and $(0.1) million for the three and six months ended June 30, 2020, respectively. As of December 31, 2019 and June 30, 2020, Investments in marketable securities includes consolidated Affiliate sponsored investment products with fair values of $38.1 million and $37.6 million, respectively.

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- Definition The entire disclosure for investments in certain debt and equity securities. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 320 -URI http://asc.fasb.org/subtopic&trid=2209399 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 946 -SubTopic 320 -URI http://asc.fasb.org/subtopic&trid=2324412 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -URI http://asc.fasb.org/topic&trid=2196928 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 940 -SubTopic 320 -URI http://asc.fasb.org/subtopic&trid=2176304 + Details
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