Jeff Yass’s T-Rex 2X Inverse MSTR Daily Target ETF MSTZ Stock Holding History

Jeff Yass’s Portfolio MSTZ Stock Details MSTZ Fund Activity

Bought

Maintained

Sold

Quarter	Market Value	Status	Shares	Change in Stake	Trade Value	Portfolio Weight	Portfolio Position
2026 Q2	$1.22M	Sell	78,755 -58,331	-43%	-$491K	﹤0.01%	7679
2026 Q1	$1.71M	Sell	137,086 -72,229	-35%	-$965K	﹤0.01%	6542
2025 Q4	$3.59M	Sell	209,315 -978,588	-82%	-$9.95M	﹤0.01%	4565
2025 Q3	$6.25M	Buy	+1,187,903	New	+$5.33M	﹤0.01%	3737
2025 Q2	–	Sell	-337,050	Closed	-$2.11M	–	13940
2025 Q1	$4.73M	Buy	337,050 +148,035	+78%	+$2.6M	﹤0.01%	3758
2024 Q4	$5.31M	Buy	189,015 +186,685	+8,012%	+$16M	﹤0.01%	3500
2024 Q3	$653K	Buy	+2,330	New	+$830K	﹤0.01%	7835

Other funds holding MSTZ

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

Jane Street New York $1.21T AUM 78.12% 1-Year Est. Return

IMC Chicago Chicago, Illinois $419B AUM 72.04% 1-Year Est. Return

Group One Trading Chicago, Illinois $71.1B AUM 128.96% 1-Year Est. Return

XTX Topco George Town, Cayman Islands $7.72B AUM 32.88% 1-Year Est. Return

TSS

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

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

GTS Securities Miami, Florida $4.75B AUM 41.97% 1-Year Est. Return

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

Jeff Yass's MSTZ Position: Q2 2026 in Review

Jeff Yass reduced its T-Rex 2X Inverse MSTR Daily Target ETF (MSTZ) stake by 43% in Q2 2026, selling an estimated $491K and leaving 78,755 shares worth $1.22M. The position accounts for ﹤0.01% of the portfolio, ranked #7679.

Jeff Yass first reported a position in MSTZ in Q3 2024 and has held it in 7 quarters since. The position peaked at $6.25M in Q3 2025. 16 funds tracked by Wall St. Rank hold MSTZ as of Q2 2026.

Jeff Yass held 78,755 shares of T-Rex 2X Inverse MSTR Daily Target ETF worth $1.22M as of Q2 2026.
Jeff Yass sold 58,331 T-Rex 2X Inverse MSTR Daily Target ETF shares in Q2 2026, an estimated $491K.
T-Rex 2X Inverse MSTR Daily Target ETF made up ﹤0.01% of Jeff Yass's portfolio in Q2 2026, its #7679 holding.
Jeff Yass first reported a position in T-Rex 2X Inverse MSTR Daily Target ETF in Q3 2024 and has held it in 7 quarters since.
Jeff Yass's T-Rex 2X Inverse MSTR Daily Target ETF position peaked at $6.25M in Q3 2025.
16 funds tracked by Wall St. Rank held T-Rex 2X Inverse MSTR Daily Target ETF as of Q2 2026.

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