JY
MSTX

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 		– Sell
-34,456
Closed -$866K – 14723
2026
Q1 		$674K Sell
34,456
-124,308
-78% -$3.73M ﹤0.01% 8894
2025
Q4 		$6.11M Buy
158,764
+153,004
+2,656% +$16.6M ﹤0.01% 3721
2025
Q3 		$1.23M Buy
5,760
+2,384
+71% +$752K ﹤0.01% 6848
2025
Q2 		$1.36M Sell
3,376
-22,436
-87% -$7.97M ﹤0.01% 6663
2025
Q1 		$6.66M Buy
25,812
+13,227
+105% +$5.02M ﹤0.01% 3136
2024
Q4 		$4.43M Sell
12,585
-3,581
-22% -$2.54M ﹤0.01% 3797
2024
Q3 		$4.69M Buy
+16,166
New +$3.48M ﹤0.01% 3680

Other funds holding MSTX

SG
StoneX Group New York $2.48B AUM 33.54% 1-Year Est. Return
UBS Group
UBS Group Zurich, Switzerland $786B AUM 40.34% 1-Year Est. Return
Jane Street
Jane Street New York $1.21T AUM 78.12% 1-Year Est. Return
Citadel Advisors
Citadel Advisors Miami, Florida $875B AUM 40.91% 1-Year Est. Return
Optiver Holding
Optiver Holding Amsterdam, Netherlands $371B AUM 64.6% 1-Year Est. Return
Goldman Sachs
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
Mariner Overland Park, Kansas $95.2B AUM 32.92% 1-Year Est. Return
JF
Jump Financial Chicago, Illinois $12.4B AUM 62.79% 1-Year Est. Return
Group One Trading
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.