Simplex Trading’s Defiance Daily Target 2x Long MSTR ETF MSTX Stock Holding History

Simplex Trading’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	$5.14K	Buy	+691	New	+$17.4K	﹤0.01%	8154
2026 Q1	–	Sell	-9,820	Closed	-$378K	–	10384
2025 Q4	$378K	Buy	+9,820	New	+$1.07M	﹤0.01%	3585
2025 Q2	–	Sell	-6,012	Closed	-$1.55M	–	9936
2025 Q1	$1.55M	Sell	6,012 -63,723	-91%	-$24.2M	﹤0.01%	2274
2024 Q4	$24.5M	Buy	69,735 +67,890	+3,680%	+$48.1M	0.01%	530
2024 Q3	$535K	Buy	+1,845	New	+$397K	﹤0.01%	3522

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

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

Simplex Trading's MSTX Position: Q2 2026 in Review

Simplex Trading opened a new position in Defiance Daily Target 2x Long MSTR ETF (MSTX) in Q2 2026: 691 shares worth $5.14K. The stake represents ﹤0.01% of the portfolio and ranks #8154 among its holdings. This is a return to the name: Simplex Trading previously reported a position in MSTX as recently as Q4 2025.

Simplex Trading first reported a position in MSTX in Q3 2024 and has held it in 5 quarters since. The position peaked at $24.5M in Q4 2024. 22 funds tracked by Wall St. Rank hold MSTX as of Q2 2026.

Simplex Trading held 691 shares of Defiance Daily Target 2x Long MSTR ETF worth $5.14K as of Q2 2026.
Defiance Daily Target 2x Long MSTR ETF was a new Simplex Trading position in Q2 2026.
Defiance Daily Target 2x Long MSTR ETF made up ﹤0.01% of Simplex Trading's portfolio in Q2 2026, its #8154 holding.
Simplex Trading first reported a position in Defiance Daily Target 2x Long MSTR ETF in Q3 2024 and has held it in 5 quarters since.
Simplex Trading's Defiance Daily Target 2x Long MSTR ETF position peaked at $24.5M in Q4 2024.
22 funds tracked by Wall St. Rank held Defiance Daily Target 2x Long MSTR ETF as of Q2 2026.

Based on Simplex Trading's 13F filing for Q2 2026, filed 12 Aug 2026.