Jeff Yass’s Defiance Daily Target 2X Short OKLO ETF OKLS Stock Holding History

Jeff Yass’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	$711K	Sell	29,115 -9,721	-25%	-$271K	﹤0.01%	9062
2026 Q1	$2.49M	Buy	38,836 +33,516	+630%	+$1.48M	﹤0.01%	5666
2025 Q4	$338K	Buy	+5,320	New	+$261K	﹤0.01%	9669

Other funds holding OKLS

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

Jane Street New York $1.21T AUM 78.12% 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

Jeff Yass's OKLS Position: Q2 2026 in Review

Jeff Yass reduced its Defiance Daily Target 2X Short OKLO ETF (OKLS) stake by 25% in Q2 2026, selling an estimated $271K and leaving 29,115 shares worth $711K. The position accounts for ﹤0.01% of the portfolio, ranked #9062.

Jeff Yass first reported a position in OKLS in Q4 2025 and has held it in 3 quarters since. The position peaked at $2.49M in Q1 2026. 7 funds tracked by Wall St. Rank hold OKLS as of Q2 2026.

Jeff Yass held 29,115 shares of Defiance Daily Target 2X Short OKLO ETF worth $711K as of Q2 2026.
Jeff Yass sold 9,721 Defiance Daily Target 2X Short OKLO ETF shares in Q2 2026, an estimated $271K.
Defiance Daily Target 2X Short OKLO ETF made up ﹤0.01% of Jeff Yass's portfolio in Q2 2026, its #9062 holding.
Jeff Yass first reported a position in Defiance Daily Target 2X Short OKLO ETF in Q4 2025 and has held it in 3 quarters since.
Jeff Yass's Defiance Daily Target 2X Short OKLO ETF position peaked at $2.49M in Q1 2026.
7 funds tracked by Wall St. Rank held Defiance Daily Target 2X Short OKLO ETF as of Q2 2026.

Based on Susquehanna International Group's 13F filing for Q2 2026, filed 14 Aug 2026.