Jim Simons’s Defiance Daily Target 2x Long MSTR ETF MSTX Stock Holding History

Jim Simons’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	-28,000	Closed	-$547K	–	3687
2026 Q1	$547K	Buy	+28,000	New	+$840K	﹤0.01%	2567
2025 Q3	–	Sell	-4,990	Closed	-$2.01M	–	4019
2025 Q2	$2.01M	Buy	+4,990	New	+$1.77M	﹤0.01%	2103

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 40.89% 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

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

Jim Simons's MSTX Position: Q2 2026 in Review

Jim Simons sold out of Defiance Daily Target 2x Long MSTR ETF (MSTX) in Q2 2026, closing a stake of 28,000 shares — an estimated $547K sold.

Jim Simons first reported a position in MSTX in Q2 2025 and held it in 2 quarters. The position peaked at $2.01M in Q2 2025. 22 funds tracked by Wall St. Rank hold MSTX as of Q2 2026.

Jim Simons reported no remaining Defiance Daily Target 2x Long MSTR ETF position as of Q2 2026 after selling out during the quarter.
Jim Simons sold 28,000 Defiance Daily Target 2x Long MSTR ETF shares in Q2 2026, an estimated $547K.
Jim Simons first reported a position in Defiance Daily Target 2x Long MSTR ETF in Q2 2025 and held it in 2 quarters.
Jim Simons's Defiance Daily Target 2x Long MSTR ETF position peaked at $2.01M in Q2 2025.
22 funds tracked by Wall St. Rank held Defiance Daily Target 2x Long MSTR ETF as of Q2 2026.

Based on Renaissance Technologies's 13F filing for Q2 2026, filed 13 Aug 2026.