Jeff Yass’s Defiance Daily Target 2x Long MSTR ETF MSTX Stock Holding History

Jeff Yass’s Portfolio MSTX Stock Details MSTX Fund Activity

Bought

Maintained

Sold

Quarter	Market Value	Status	Shares	Change in Stake	Trade Value	Portfolio Weight	Portfolio Position
2026 Q2	$16.2M	Buy	2,174,800 +389,000	+22%	+$9.78M	﹤0.01%	2696
2026 Q1	$34.9M	Buy	1,785,800 +1,605,160	+889%	+$48.2M	﹤0.01%	1585
2025 Q4	$6.95M	Sell	180,640 -179,990	-50%	-$19.5M	﹤0.01%	3543
2025 Q3	$77.1M	Buy	360,630 +93,340	+35%	+$29.5M	0.01%	1057
2025 Q2	$108M	Buy	267,290 +157,160	+143%	+$55.8M	0.02%	720
2025 Q1	$28.4M	Buy	110,130 +25,480	+30%	+$9.66M	﹤0.01%	1433
2024 Q4	$29.8M	Buy	+84,650	New	+$60M	﹤0.01%	1538

Other funds holding MSTX

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

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

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

Citadel Advisors Miami, Florida $875B AUM 40.91% 1-Year Est. Return

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

Goldman Sachs New York $1.15T AUM 47.82% 1-Year Est. Return

OMC

Old Mission Capital Chicago, Illinois $6.31B AUM 20.77% 1-Year Est. Return

Mariner Overland Park, Kansas $95.2B AUM 32.92% 1-Year Est. Return

Jump Financial Chicago, Illinois $12.4B AUM 62.79% 1-Year Est. Return

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

Jeff Yass's MSTX Position: Q2 2026 in Review

Jeff Yass sold out of Defiance Daily Target 2x Long MSTR ETF (MSTX) in Q2 2026, closing a stake of 34,456 shares — an estimated $866K sold.

Jeff Yass first reported a position in MSTX in Q3 2024 and held it in 7 quarters. The position peaked at $6.66M in Q1 2025. 22 funds tracked by Wall St. Rank hold MSTX as of Q2 2026.

Jeff Yass reported no remaining Defiance Daily Target 2x Long MSTR ETF position as of Q2 2026 after selling out during the quarter.
Jeff Yass sold 34,456 Defiance Daily Target 2x Long MSTR ETF shares in Q2 2026, an estimated $866K.
Jeff Yass first reported a position in Defiance Daily Target 2x Long MSTR ETF in Q3 2024 and held it in 7 quarters.
Jeff Yass's Defiance Daily Target 2x Long MSTR ETF position peaked at $6.66M in Q1 2025.
22 funds tracked by Wall St. Rank held Defiance Daily Target 2x Long MSTR ETF as of Q2 2026.

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