Ken Griffin’s YieldMax HIMS Option Income Strategy ETF HIYY Stock Holding History

Ken Griffin’s Portfolio HIYY Stock Details HIYY Fund Activity

Bought

Maintained

Sold

Quarter	Market Value	Status	Shares	Change in Stake	Trade Value	Portfolio Weight	Portfolio Position
2026 Q1	–	Sell	-17,178	Closed	-$423K	–	14796
2025 Q4	$423K	Sell	17,178 -8,722	-34%	-$301K	﹤0.01%	9420
2025 Q3	$1.26M	Buy	+25,900	New	+$1.26M	﹤0.01%	7041

Other funds holding HIYY

Tidal Investments Milwaukee, Wisconsin $47.4B AUM 59.58% 1-Year Est. Return

Jane Street New York $777B AUM 61.18% 1-Year Est. Return

UBS Group Zurich, Switzerland $666B AUM 30.12% 1-Year Est. Return

Harbour Investments Madison, Wisconsin $6.48B AUM 18.23% 1-Year Est. Return

Fidelity Investments Boston, Massachusetts $1.9T AUM 41.92% 1-Year Est. Return

Ken Griffin's HIYY Position: Q1 2026 in Review

Ken Griffin sold out of YieldMax HIMS Option Income Strategy ETF (HIYY) in Q1 2026, closing a stake of 17,178 shares — an estimated $423K sold.

Ken Griffin first reported a position in HIYY in Q3 2025 and held it in 2 quarters. The position peaked at $1.26M in Q3 2025. 5 funds tracked by Wall St. Rank hold HIYY as of Q1 2026.

Ken Griffin reported no remaining YieldMax HIMS Option Income Strategy ETF position as of Q1 2026 after selling out during the quarter.
Ken Griffin sold 17,178 YieldMax HIMS Option Income Strategy ETF shares in Q1 2026, an estimated $423K.
Ken Griffin first reported a position in YieldMax HIMS Option Income Strategy ETF in Q3 2025 and held it in 2 quarters.
Ken Griffin's YieldMax HIMS Option Income Strategy ETF position peaked at $1.26M in Q3 2025.
5 funds tracked by Wall St. Rank held YieldMax HIMS Option Income Strategy ETF as of Q1 2026.

Based on Citadel Advisors's 13F filing for Q1 2026, filed 15 May 2026.