T-Rex 2X Inverse MSTR Daily Target ETF
MSTZ
21 hedge funds and large institutions have $15.5M invested in T-Rex 2X Inverse MSTR Daily Target ETF in 2025 Q3 according to their latest regulatory filings, with 7 funds opening new positions, 8 increasing their positions, 4 reducing their positions, and 4 closing their positions.
424% more capital invested
Capital invested by funds: $2.95M → $15.5M (+$12.5M)
100% more repeat investments, than reductions
Existing positions increased: 8 | Existing positions reduced: 4
75% more first-time investments, than exits
New positions opened: 7 | Existing positions closed: 4
49% more call options, than puts
Call options by funds: $6.49M | Put options by funds: $4.35M
17% more funds holding
Funds holding: 18 → 21 (+3)
11.46% more ownership
Funds ownership: 2.75% → 14.21% (+11%)
Top Buyers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
Susquehanna International Group
Bala Cynwyd,
Pennsylvania
|
+$5.33M |
| 2 |
Optiver Holding
Amsterdam,
Netherlands
|
+$1.75M |
| 3 |
RAM
Revere Asset Management
Dallas,
Texas
|
+$1.09M |
| 4 |
UBS Group
Zurich,
Switzerland
|
+$697K |
| 5 |
Citadel Advisors
Miami,
Florida
|
+$499K |
Top Sellers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
Simplex Trading
Chicago,
Illinois
|
-$426K |
| 2 |
AWM
Avior Wealth Management
Omaha,
Nebraska
|
-$280K |
| 3 |
HF
HRT Financial
New York
|
-$145K |
| 4 |
Morgan Stanley
New York
|
-$122K |
| 5 |
Group One Trading
Chicago,
Illinois
|
-$67.7K |
MSTZ Hedge Fund Activity: Q3 2025 in Review
21 of the 7,643 institutional investors tracked by Wall St. Rank reported a position in T-Rex 2X Inverse MSTR Daily Target ETF (MSTZ) for Q3 2025, worth a combined $15.5M — up 424% from $2.95M a quarter earlier.
Buyers outnumbered sellers: 7 funds opened new MSTZ positions and 4 closed out — a net gain of 3 holders — while 8 added to existing stakes and 4 trimmed.
The largest buyer was Susquehanna International Group, opening a new position worth an estimated $5.33M. The largest seller was Simplex Trading, cutting an estimated $426K.
- 21 institutional investors held T-Rex 2X Inverse MSTR Daily Target ETF (MSTZ) as of Q3 2025, up from 18 in Q2 2025.
- Funds reported $15.5M of T-Rex 2X Inverse MSTR Daily Target ETF stock for Q3 2025, up 424% quarter-over-quarter.
- 7 funds opened new T-Rex 2X Inverse MSTR Daily Target ETF positions in Q3 2025 and 4 closed out, a net change of +3 holders.
- The largest T-Rex 2X Inverse MSTR Daily Target ETF buyer in Q3 2025 was Susquehanna International Group, an estimated $5.33M added.
- The largest T-Rex 2X Inverse MSTR Daily Target ETF seller in Q3 2025 was Simplex Trading, an estimated $426K sold.
Based on aggregated 13F filings for Q3 2025.