Jane Street
MSTX

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 		$234K Buy
+11,962
New +$359K ﹤0.01% 9787
2025
Q3 		– Sell
-675
Closed -$213K – 11997
2025
Q2 		$272K Sell
675
-29,919
-98% -$10.6M ﹤0.01% 8027
2025
Q1 		$7.89M Buy
30,594
+34
+0.1% +$12.9K ﹤0.01% 2289
2024
Q4 		$10.8M Buy
30,560
+24,270
+386% +$17.2M ﹤0.01% 1818
2024
Q3 		$1.82M Buy
+6,290
New +$1.35M ﹤0.01% 4670

Other funds holding MSTX

SG
StoneX Group New York $1.86B AUM 21.3% 1-Year Est. Return
Goldman Sachs
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
Susquehanna International Group Bala Cynwyd, Pennsylvania $893B AUM 36.07% 1-Year Est. Return
Renaissance Technologies
Renaissance Technologies New York $63.9B AUM 45.56% 1-Year Est. Return
HF
HRT Financial New York $40.1B AUM 58.22% 1-Year Est. Return
Group One Trading
Group One Trading Chicago, Illinois $52.2B AUM 104.56% 1-Year Est. Return
Mariner
Mariner Overland Park, Kansas $85.7B AUM 24.21% 1-Year Est. Return
Optiver Holding
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.