Jane Street’s REX MSTR Covered Call ETF MSII Stock Holding History

Jane Street’s Portfolio MSII Stock Details MSII Fund Activity

Bought

Maintained

Sold

Quarter	Market Value	Status	Shares	Change in Stake	Trade Value	Portfolio Weight	Portfolio Position
2025 Q4	–	Sell	-41,163	Closed	-$772K	–	12870
2025 Q3	$772K	Buy	+41,163	New	+$932K	﹤0.01%	6877

Other funds holding MSII

OMC

Old Mission Capital Chicago, Illinois $6.3B AUM 14.68% 1-Year Est. Return

TAM

Tucker Asset Management Littleton, Colorado $343M AUM 17.55% 1-Year Est. Return

Jane Street's MSII Position: Q4 2025 in Review

Jane Street sold out of REX MSTR Covered Call ETF (MSII) in Q4 2025, closing a stake of 41,163 shares — an estimated $772K sold.

Jane Street first reported a position in MSII in Q3 2025 and held it in 1 quarter. The position peaked at $772K in Q3 2025. 2 funds tracked by Wall St. Rank hold MSII as of Q4 2025.

Jane Street reported no remaining REX MSTR Covered Call ETF position as of Q4 2025 after selling out during the quarter.
Jane Street sold 41,163 REX MSTR Covered Call ETF shares in Q4 2025, an estimated $772K.
Jane Street first reported a position in REX MSTR Covered Call ETF in Q3 2025 and held it in 1 quarter.
Jane Street's REX MSTR Covered Call ETF position peaked at $772K in Q3 2025.
2 funds tracked by Wall St. Rank held REX MSTR Covered Call ETF as of Q4 2025.

Based on Jane Street's 13F filing for Q4 2025, filed 12 Feb 2026.