Optiver Holding
MSTX

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

Optiver Holding’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 		$412K Sell
21,050
-12,517
-37% -$375K ﹤0.01% 681
2025
Q4 		$1.29M Buy
33,567
+32,087
+2,168% +$3.48M ﹤0.01% 477
2025
Q3 		$316K Sell
1,480
-3,813
-72% -$1.2M ﹤0.01% 566
2025
Q2 		$2.14M Sell
5,293
-3,206
-38% -$1.14M ﹤0.01% 269
2025
Q1 		$2.19M Buy
8,499
+7,974
+1,519% +$3.02M ﹤0.01% 254
2024
Q4 		$185K Buy
+525
New +$372K ﹤0.01% 485

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
GFG
Genesis Financial Group Paramus, New Jersey $158M AUM
JF
Jump Financial Chicago, Illinois $7.5B AUM 33.9% 1-Year Est. Return

Optiver Holding's MSTX Position: Q1 2026 in Review

Optiver Holding reduced its Defiance Daily Target 2x Long MSTR ETF (MSTX) stake by 37% in Q1 2026, selling an estimated $375K and leaving 21,050 shares worth $412K. The position accounts for ﹤0.01% of the portfolio, ranked #681.

Optiver Holding first reported a position in MSTX in Q4 2024 and has held it in 6 quarters since. The position peaked at $2.19M in Q1 2025. 25 funds tracked by Wall St. Rank hold MSTX as of Q1 2026.

  • Optiver Holding held 21,050 shares of Defiance Daily Target 2x Long MSTR ETF worth $412K as of Q1 2026.
  • Optiver Holding sold 12,517 Defiance Daily Target 2x Long MSTR ETF shares in Q1 2026, an estimated $375K.
  • Defiance Daily Target 2x Long MSTR ETF made up ﹤0.01% of Optiver Holding's portfolio in Q1 2026, its #681 holding.
  • Optiver Holding first reported a position in Defiance Daily Target 2x Long MSTR ETF in Q4 2024 and has held it in 6 quarters since.
  • Optiver Holding's Defiance Daily Target 2x Long MSTR ETF position peaked at $2.19M in Q1 2025.
  • 25 funds tracked by Wall St. Rank held Defiance Daily Target 2x Long MSTR ETF as of Q1 2026.

Based on Optiver Holding's 13F filing for Q1 2026, filed 15 May 2026.