Group One Trading
MSTZ

Group One Trading’s T-Rex 2X Inverse MSTR Daily Target ETF MSTZ Stock Holding History

Group One Trading’s Portfolio MSTZ Stock Details MSTZ Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q2 		$814K Buy
+52,426
New +$442K ﹤0.01% 3069
2025
Q3 		– Sell
-16,199
Closed -$67.7K – 9311
2025
Q2 		$67.7K Buy
+16,199
New +$102K ﹤0.01% 5308

Other funds holding MSTZ

HF
HRT Financial New York $54.8B AUM 81.03% 1-Year Est. Return
SG
StoneX Group New York $2.48B AUM 33.54% 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
IMC Chicago
IMC Chicago Chicago, Illinois $419B AUM 72.04% 1-Year Est. Return
XT
XTX Topco George Town, Cayman Islands $7.72B AUM 32.88% 1-Year Est. Return
TSS
Two Sigma Securities New York $1.16B AUM 36.23% 1-Year Est. Return
Optiver Holding
Optiver Holding Amsterdam, Netherlands $371B AUM 64.6% 1-Year Est. Return
GS
GTS Securities Miami, Florida $4.75B AUM 41.97% 1-Year Est. Return
UBS Group
UBS Group Zurich, Switzerland $786B AUM 40.34% 1-Year Est. Return

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

Group One Trading opened a new position in T-Rex 2X Inverse MSTR Daily Target ETF (MSTZ) in Q2 2026: 52,426 shares worth $814K. The stake represents ﹤0.01% of the portfolio and ranks #3069 among its holdings. This is a return to the name: Group One Trading previously reported a position in MSTZ as recently as Q2 2025.

Group One Trading first reported a position in MSTZ in Q2 2025 and has held it in 2 quarters since. 16 funds tracked by Wall St. Rank hold MSTZ as of Q2 2026.

  • Group One Trading held 52,426 shares of T-Rex 2X Inverse MSTR Daily Target ETF worth $814K as of Q2 2026.
  • T-Rex 2X Inverse MSTR Daily Target ETF was a new Group One Trading position in Q2 2026.
  • T-Rex 2X Inverse MSTR Daily Target ETF made up ﹤0.01% of Group One Trading's portfolio in Q2 2026, its #3069 holding.
  • Group One Trading first reported a position in T-Rex 2X Inverse MSTR Daily Target ETF in Q2 2025 and has held it in 2 quarters since.
  • 16 funds tracked by Wall St. Rank held T-Rex 2X Inverse MSTR Daily Target ETF as of Q2 2026.

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