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Investment Securities (Tables) | 3 Months Ended
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Mar. 31, 2021
Investments, Debt and Equity Securities [Abstract] |
Marketable Securities | The disclosures below include details of Artisan’s investments, excluding money market funds and consolidated investment products. Investments held by consolidated investment products are described in Note 6, “Variable Interest Entities and Consolidated Investment Products”.
| As of March 31, 2021 |  | As of December 31, 2020
Investments in equity securities | $ | 34,464 |  |  | $ | 2,807 |
Investments in equity securities accounted for under the equity method | 1,771 |  |  | 849 |
Total investment securities | $ | 36,235 |  |  | $ | 3,656 |

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- Definition Tabular disclosure of marketable securities. This may consist of investments in certain debt and equity securities, short-term investments and other assets. + References No definition available. + Details
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