Jane Street’s Defiance Daily Target 2x Long MSTR ETF MSTX Stock Holding History

Jane Street’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 Q1	$698K	Sell	35,700 -10,180	-22%	-$305K	﹤0.01%	7280
2025 Q4	$1.77M	Sell	45,880 -49,870	-52%	-$5.41M	﹤0.01%	5044
2025 Q3	$20.5M	Buy	95,750 +1,000	+1%	+$316K	﹤0.01%	1637
2025 Q2	$38.2M	Sell	94,750 -2,710	-3%	-$963K	0.01%	948
2025 Q1	$25.1M	Sell	97,460 -9,960	-9%	-$3.78M	0.01%	1123
2024 Q4	$37.8M	Buy	+107,420	New	+$76.1M	0.01%	844

Other funds holding MSTX

StoneX Group New York $1.86B AUM 21.3% 1-Year Est. Return

Goldman Sachs New York $871B AUM 31.28% 1-Year Est. Return

FTUS

Flow Traders U.S. New York $3.16B AUM 19.52% 1-Year Est. Return

Susquehanna International Group Bala Cynwyd, Pennsylvania $893B AUM 36.07% 1-Year Est. Return

Renaissance Technologies New York $63.9B AUM 45.56% 1-Year Est. Return

HRT Financial New York $40.1B AUM 58.22% 1-Year Est. Return

Group One Trading Chicago, Illinois $52.2B AUM 104.56% 1-Year Est. Return

Mariner Overland Park, Kansas $85.7B AUM 24.21% 1-Year Est. Return

Optiver Holding Amsterdam, Netherlands $289B AUM 33.63% 1-Year Est. Return

GFG

Genesis Financial Group Paramus, New Jersey $158M AUM

Jane Street's MSTX Position: Q1 2026 in Review

Jane Street opened a new position in Defiance Daily Target 2x Long MSTR ETF (MSTX) in Q1 2026: 11,962 shares worth $234K. The stake represents ﹤0.01% of the portfolio and ranks #9787 among its holdings. This is a return to the name: Jane Street previously reported a position in MSTX as recently as Q2 2025.

Jane Street first reported a position in MSTX in Q3 2024 and has held it in 5 quarters since. The position peaked at $10.8M in Q4 2024. 25 funds tracked by Wall St. Rank hold MSTX as of Q1 2026.

Jane Street held 11,962 shares of Defiance Daily Target 2x Long MSTR ETF worth $234K as of Q1 2026.
Defiance Daily Target 2x Long MSTR ETF was a new Jane Street position in Q1 2026.
Defiance Daily Target 2x Long MSTR ETF made up ﹤0.01% of Jane Street's portfolio in Q1 2026, its #9787 holding.
Jane Street first reported a position in Defiance Daily Target 2x Long MSTR ETF in Q3 2024 and has held it in 5 quarters since.
Jane Street's Defiance Daily Target 2x Long MSTR ETF position peaked at $10.8M in Q4 2024.
25 funds tracked by Wall St. Rank held Defiance Daily Target 2x Long MSTR ETF as of Q1 2026.

Based on Jane Street's 13F filing for Q1 2026, filed 12 May 2026.