Jane Street’s T-Rex 2X Long MSTR Daily Target ETF MSTU Stock Holding History

Jane Street’s Portfolio MSTU Stock Details MSTU Fund Activity

Bought

Maintained

Sold

Quarter	Market Value	Status	Shares	Change in Stake	Trade Value	Portfolio Weight	Portfolio Position
2026 Q2	–	Sell	-1,500	Closed	-$82.2K	–	13481
2026 Q1	$63.8K	Sell	1,500 -125,502	-99%	-$8.18M	﹤0.01%	10877
2025 Q4	$10.6M	Buy	+127,002	New	+$30M	﹤0.01%	2258
2025 Q3	–	Sell	-50,225	Closed	-$34.4M	–	12056
2025 Q2	$43.4M	Buy	50,225 +49,916	+16,154%	+$37.7M	0.01%	858
2025 Q1	$169K	Sell	309 -118,785	-100%	-$95.7M	﹤0.01%	8567
2024 Q4	$90.5M	Buy	119,094 +118,375	+16,464%	+$128M	0.02%	460
2024 Q3	$288K	Buy	+719	New	+$246K	﹤0.01%	8099

Other funds holding MSTU

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

CWM

Centric Wealth Management Chicago, Illinois $643M AUM 21% 1-Year Est. Return

SRL

Scientech Research LLC Jersey City, New Jersey $123M AUM 198.31% 1-Year Est. Return

Citadel Advisors Miami, Florida $875B AUM 40.89% 1-Year Est. Return

SBI Securities Tokyo, Japan $4.4B AUM 74.26% 1-Year Est. Return

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

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

TSS

Two Sigma Securities New York $1.16B AUM 36.23% 1-Year Est. Return

Renaissance Technologies New York $72.6B AUM 54.88% 1-Year Est. Return

UBS Group Zurich, Switzerland $786B AUM 40.34% 1-Year Est. Return

Jane Street's MSTU Position: Q2 2026 in Review

Jane Street sold out of T-Rex 2X Long MSTR Daily Target ETF (MSTU) in Q2 2026, closing a stake of 1,500 shares — an estimated $82.2K sold.

Jane Street first reported a position in MSTU in Q3 2024 and held it in 6 quarters. The position peaked at $90.5M in Q4 2024. 40 funds tracked by Wall St. Rank hold MSTU as of Q2 2026.

Jane Street reported no remaining T-Rex 2X Long MSTR Daily Target ETF position as of Q2 2026 after selling out during the quarter.
Jane Street sold 1,500 T-Rex 2X Long MSTR Daily Target ETF shares in Q2 2026, an estimated $82.2K.
Jane Street first reported a position in T-Rex 2X Long MSTR Daily Target ETF in Q3 2024 and held it in 6 quarters.
Jane Street's T-Rex 2X Long MSTR Daily Target ETF position peaked at $90.5M in Q4 2024.
40 funds tracked by Wall St. Rank held T-Rex 2X Long MSTR Daily Target ETF as of Q2 2026.

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