v3.26.3
Investment Securities (Tables)
 9 Months Ended
Sep. 30, 2026
Investments, Debt and Equity Securities [Abstract]  
Marketable Securities The disclosures below detail Artisan’s investments, excluding money market funds and consolidated investment products. Investments held by consolidated investment products are described in Note 7, “Variable Interest Entities and Consolidated Investment Products.”
As of September 30, 2026As of December 31, 2025
Seed investments in equity securities$11,754 $42,708 
Seed investments in equity securities accounted for under the equity method4,068 3,341 
Compensation plan investments in equity securities184,517 163,875 
Compensation plan investments in equity securities accounted for under the equity method52,985 18,120 
Total investment securities$253,324 $228,044 
Unrealized Gain (Loss) on Investments
Unrealized gain (loss) related to investment securities held during the periods indicated below were as follows:
 For the Three Months Ended September 30, For the Nine Months Ended September 30,
2026202520262025
Unrealized gain (loss) in the period on investment securities held at the end of the period$(4,084)$9,109 $17,510 $28,184