Jane Street’s Defiance Daily Target 2X Short OKLO ETF OKLS Stock Holding History

Jane Street’s Portfolio OKLS Stock Details OKLS Fund Activity

Bought

Maintained

Sold

Quarter	Market Value	Status	Shares	Change in Stake	Trade Value	Portfolio Weight	Portfolio Position
2026 Q2	$204K	Sell	8,363 -19,397	-70%	-$541K	﹤0.01%	10089
2026 Q1	$1.78M	Buy	+27,760	New	+$1.23M	﹤0.01%	5325

Other funds holding OKLS

Susquehanna International Group Bala Cynwyd, Pennsylvania $1.28T AUM 58.89% 1-Year Est. Return

HRT Financial New York $54.8B AUM 81.03% 1-Year Est. Return

Jump Financial Chicago, Illinois $12.4B AUM 62.79% 1-Year Est. Return

StoneX Group New York $2.48B AUM 33.54% 1-Year Est. Return

Optiver Holding Amsterdam, Netherlands $371B AUM 64.6% 1-Year Est. Return

TRCT

Tower Research Capital (TRC) New York $4.08B AUM 58.77% 1-Year Est. Return

Jane Street's OKLS Position: Q2 2026 in Review

Jane Street reduced its Defiance Daily Target 2X Short OKLO ETF (OKLS) stake by 70% in Q2 2026, selling an estimated $541K and leaving 8,363 shares worth $204K. The position accounts for ﹤0.01% of the portfolio, ranked #10089.

Jane Street first reported a position in OKLS in Q1 2026 and has held it in 2 quarters since. The position peaked at $1.78M in Q1 2026. 7 funds tracked by Wall St. Rank hold OKLS as of Q2 2026.

Jane Street held 8,363 shares of Defiance Daily Target 2X Short OKLO ETF worth $204K as of Q2 2026.
Jane Street sold 19,397 Defiance Daily Target 2X Short OKLO ETF shares in Q2 2026, an estimated $541K.
Defiance Daily Target 2X Short OKLO ETF made up ﹤0.01% of Jane Street's portfolio in Q2 2026, its #10089 holding.
Jane Street first reported a position in Defiance Daily Target 2X Short OKLO ETF in Q1 2026 and has held it in 2 quarters since.
Jane Street's Defiance Daily Target 2X Short OKLO ETF position peaked at $1.78M in Q1 2026.
7 funds tracked by Wall St. Rank held Defiance Daily Target 2X Short OKLO ETF as of Q2 2026.

Based on Jane Street's 13F filing for Q2 2026, filed 14 Aug 2026.