Group One Trading
MST

Group One Trading’s Defiance Leveraged Long Income MSTR ETF MST Stock Holding History

Group One Trading’s Portfolio MST Stock Details MST Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q2 		$5.47K Buy
760
+384
+102% +$9.1K ﹤0.01% 6695
2026
Q1 		$7.73K Buy
376
+98
+35% +$3.05K ﹤0.01% 6505
2025
Q4 		$11.4K Buy
+278
New +$33.4K ﹤0.01% 6736

Other funds holding MST

OMC
Old Mission Capital Chicago, Illinois $6.31B AUM 20.77% 1-Year Est. Return
Susquehanna International Group
Susquehanna International Group Bala Cynwyd, Pennsylvania $1.28T AUM 58.89% 1-Year Est. Return
Jane Street
Jane Street New York $1.21T AUM 78.12% 1-Year Est. Return
Simplex Trading
Simplex Trading Chicago, Illinois $171B AUM 85% 1-Year Est. Return
KFAS
Keating Financial Advisory Services Manhattan, Kansas $760M AUM

Group One Trading's MST Position: Q2 2026 in Review

Group One Trading increased its Defiance Leveraged Long Income MSTR ETF (MST) stake by 102% in Q2 2026, buying an estimated $9.1K and bringing the position to 760 shares worth $5.47K. The position accounts for ﹤0.01% of the portfolio, ranked #6695.

Group One Trading first reported a position in MST in Q4 2025 and has held it in 3 quarters since. The position peaked at $11.4K in Q4 2025. 6 funds tracked by Wall St. Rank hold MST as of Q2 2026.

  • Group One Trading held 760 shares of Defiance Leveraged Long Income MSTR ETF worth $5.47K as of Q2 2026.
  • Group One Trading bought 384 Defiance Leveraged Long Income MSTR ETF shares in Q2 2026, an estimated $9.1K.
  • Defiance Leveraged Long Income MSTR ETF made up ﹤0.01% of Group One Trading's portfolio in Q2 2026, its #6695 holding.
  • Group One Trading first reported a position in Defiance Leveraged Long Income MSTR ETF in Q4 2025 and has held it in 3 quarters since.
  • Group One Trading's Defiance Leveraged Long Income MSTR ETF position peaked at $11.4K in Q4 2025.
  • 6 funds tracked by Wall St. Rank held Defiance Leveraged Long Income MSTR ETF as of Q2 2026.

Based on Group One Trading's 13F filing for Q2 2026, filed 14 Aug 2026.