Simplex Trading
MSTZ

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

Simplex 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
Q1 		$37.6K Buy
+3,011
New +$40.2K ﹤0.01% 6162
2025
Q4 		– Sell
-10,213
Closed -$53K – 10417
2025
Q3 		$53K Sell
10,213
-94,945
-90% -$426K ﹤0.01% 6407
2025
Q2 		$439K Buy
105,158
+104,465
+15,074% +$655K ﹤0.01% 3637
2025
Q1 		$9K Buy
+693
New +$12.2K ﹤0.01% 7214

Other funds holding MSTZ

Susquehanna International Group
Susquehanna International Group Bala Cynwyd, Pennsylvania $893B AUM 36.07% 1-Year Est. Return
XT
XTX Topco George Town, Cayman Islands $5.75B AUM 30.56% 1-Year Est. Return
EC
Elequin Capital New York $1.19B AUM 16.08% 1-Year Est. Return
SG
StoneX Group New York $1.86B AUM 21.3% 1-Year Est. Return
FTUS
Flow Traders U.S. New York $3.16B AUM 19.52% 1-Year Est. Return
TSS
Two Sigma Securities New York $861M AUM 21.33% 1-Year Est. Return
GS
GTS Securities New York $2.83B AUM 21.76% 1-Year Est. Return
IMC Chicago
IMC Chicago Chicago, Illinois $419B AUM 72.04% 1-Year Est. Return
JF
Jump Financial Chicago, Illinois $7.5B AUM 33.9% 1-Year Est. Return
Jane Street
Jane Street New York $777B AUM 61.18% 1-Year Est. Return

Simplex Trading's MSTZ Position: Q1 2026 in Review

Simplex Trading opened a new position in T-Rex 2X Inverse MSTR Daily Target ETF (MSTZ) in Q1 2026: 3,011 shares worth $37.6K. The stake represents ﹤0.01% of the portfolio and ranks #6162 among its holdings. This is a return to the name: Simplex Trading previously reported a position in MSTZ as recently as Q3 2025.

Simplex Trading first reported a position in MSTZ in Q1 2025 and has held it in 4 quarters since. The position peaked at $439K in Q2 2025. 16 funds tracked by Wall St. Rank hold MSTZ as of Q1 2026.

  • Simplex Trading held 3,011 shares of T-Rex 2X Inverse MSTR Daily Target ETF worth $37.6K as of Q1 2026.
  • T-Rex 2X Inverse MSTR Daily Target ETF was a new Simplex Trading position in Q1 2026.
  • T-Rex 2X Inverse MSTR Daily Target ETF made up ﹤0.01% of Simplex Trading's portfolio in Q1 2026, its #6162 holding.
  • Simplex Trading first reported a position in T-Rex 2X Inverse MSTR Daily Target ETF in Q1 2025 and has held it in 4 quarters since.
  • Simplex Trading's T-Rex 2X Inverse MSTR Daily Target ETF position peaked at $439K in Q2 2025.
  • 16 funds tracked by Wall St. Rank held T-Rex 2X Inverse MSTR Daily Target ETF as of Q1 2026.

Based on Simplex Trading's 13F filing for Q1 2026, filed 14 May 2026.