Jim Simons
MSTX

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
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

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
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
JF
Jump Financial Chicago, Illinois $7.5B AUM 33.9% 1-Year Est. Return

Jim Simons's MSTX Position: Q1 2026 in Review

Jim Simons opened a new position in Defiance Daily Target 2x Long MSTR ETF (MSTX) in Q1 2026: 28,000 shares worth $547K. The stake represents ﹤0.01% of the portfolio and ranks #2567 among its holdings. This is a return to the name: Jim Simons previously reported a position in MSTX as recently as Q2 2025.

Jim Simons first reported a position in MSTX in Q2 2025 and has held it in 2 quarters since. The position peaked at $2.01M in Q2 2025. 25 funds tracked by Wall St. Rank hold MSTX as of Q1 2026.

  • Jim Simons held 28,000 shares of Defiance Daily Target 2x Long MSTR ETF worth $547K as of Q1 2026.
  • Defiance Daily Target 2x Long MSTR ETF was a new Jim Simons position in Q1 2026.
  • Defiance Daily Target 2x Long MSTR ETF made up ﹤0.01% of Jim Simons's portfolio in Q1 2026, its #2567 holding.
  • Jim Simons first reported a position in Defiance Daily Target 2x Long MSTR ETF in Q2 2025 and has held it in 2 quarters since.
  • Jim Simons's Defiance Daily Target 2x Long MSTR ETF position peaked at $2.01M in Q2 2025.
  • 25 funds tracked by Wall St. Rank held Defiance Daily Target 2x Long MSTR ETF as of Q1 2026.

Based on Renaissance Technologies's 13F filing for Q1 2026, filed 14 May 2026.