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Investment Securities (Tables)
9 Months Ended
Sep. 30, 2019
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 September 30, 2019As of December 31, 2018
Investments in equity securities  $7,268  $5,857  
Investments in equity securities accounted for under the equity method  15,170  12,252  
Total investment securities  $22,438  $18,109  
Gain (Loss) on Investments The table below presents the net investment income activity related to these investment securities:
 For the Three Months Ended September 30, For the Nine Months Ended September 30,
2019201820192018
Net gains (losses) recognized on investment securities $651  $967  $3,374  $1,592  
Less: Net realized gains (losses) recognized on investment securities sold during the period $—  $—  $—  $—  
Unrealized gains (losses) recognized on investment securities held as of the end of the period $651  $967  $3,374  $1,592