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MSTZ

T-Rex 2X Inverse MSTR Daily Target ETF

16 hedge funds and large institutions have $7.67M invested in T-Rex 2X Inverse MSTR Daily Target ETF in 2026 Q1 according to their latest regulatory filings, with 8 funds opening new positions, 3 increasing their positions, 5 reducing their positions, and 7 closing their positions.

New
Increased
Maintained
Reduced
Closed

14% more first-time investments, than exits

New positions opened: 8 | Existing positions closed: 7

7% more funds holding

Funds holding: 1516 (+1)

1.56% less ownership

Funds ownership: 8.26%6.7% (-1.6%)

12% less capital invested

Capital invested by funds: $8.71M → $7.67M (-$1.04M)

20% less call options, than puts

Call options by funds: $8.39M | Put options by funds: $10.5M

40% less repeat investments, than reductions

Existing positions increased: 3 | Existing positions reduced: 5

Holders
16
Holders Change
+1
Holders Change %
+6.67%
% of All Funds
0.2%
Holding in Top 10
Holding in Top 10 Change
Holding in Top 10 Change %
% of All Funds
New
8
Increased
3
Reduced
5
Closed
7
Calls
$8.39M
Puts
$10.5M
Net Calls
-$2.15M
Net Calls Change
-$1.42M
Name Holding Trade Value Shares
Change
Change in
Stake
Susquehanna International Group
1
Susquehanna International Group
Pennsylvania
$1.71M -$965K -72,229 -35%
XT
2
XTX Topco
Cayman Islands
$1.46M +$1.57M +117,319 New
EC
3
Elequin Capital
New York
$937K +$544K +40,739 +11,070%
SG
4
StoneX Group
New York
$726K +$204K +15,228 +35%
FTUS
5
Flow Traders U.S.
New York
$586K +$627K +46,921 New
TSS
6
Two Sigma Securities
New York
$531K +$568K +42,519 New
GS
7
GTS Securities
New York
$404K +$432K +32,337 New
IMC Chicago
8
IMC Chicago
Illinois
$320K +$38.6K +2,886 +13%
JF
9
Jump Financial
Illinois
$298K -$196K -14,689 -38%
Jane Street
10
Jane Street
New York
$244K -$990K -74,095 -79%
Optiver Holding
11
Optiver Holding
Netherlands
$209K -$64.5K -4,826 -22%
SS
12
SBI Securities
Japan
$170K -$40.4K -3,020 -18%
Simplex Trading
13
Simplex Trading
Illinois
$37.6K +$40.2K +3,011 New
FDCDDQ
14
Federation des caisses Desjardins du Quebec
Quebec, Canada
$21.2K +$22.7K +1,700 New
Belvedere Trading
15
Belvedere Trading
Illinois
$7.97K +$8.54K +639 New
IA
16
IFP Advisors
Florida
$150 +$160 +12 New
SRL
17
Scientech Research LLC
New Jersey
-$378K -22,032 Closed
Citadel Advisors
18
Citadel Advisors
Florida
-$179K -13,364 Closed
HT
19
Headlands Technologies
Illinois
-$204K -11,874 Closed
Citigroup
20
Citigroup
New York
-$144K -8,422 Closed
TRCT
21
Tower Research Capital (TRC)
New York
-$99.4K -5,794 Closed
UBS Group
22
UBS Group
Switzerland
-$8.88K -518 Closed
HCM
23
Hollencrest Capital Management
California
-$86 -5 Closed

MSTZ Hedge Fund Activity: Q1 2026 in Review

16 of the 8,146 institutional investors tracked by Wall St. Rank reported a position in T-Rex 2X Inverse MSTR Daily Target ETF (MSTZ) for Q1 2026, worth a combined $7.67M — down 12% from $8.71M a quarter earlier.

Buyers outnumbered sellers: 8 funds opened new MSTZ positions and 7 closed out — a net gain of 1 holder — while 3 added to existing stakes and 5 trimmed.

The largest buyer was XTX Topco, opening a new position worth an estimated $1.57M. The largest seller was Jane Street, cutting an estimated $990K.

  • 16 institutional investors held T-Rex 2X Inverse MSTR Daily Target ETF (MSTZ) as of Q1 2026, up from 15 in Q4 2025.
  • Funds reported $7.67M of T-Rex 2X Inverse MSTR Daily Target ETF stock for Q1 2026, down 12% quarter-over-quarter.
  • 8 funds opened new T-Rex 2X Inverse MSTR Daily Target ETF positions in Q1 2026 and 7 closed out, a net change of +1 holder.
  • The largest T-Rex 2X Inverse MSTR Daily Target ETF buyer in Q1 2026 was XTX Topco, an estimated $1.57M added.
  • The largest T-Rex 2X Inverse MSTR Daily Target ETF seller in Q1 2026 was Jane Street, an estimated $990K sold.

Based on aggregated 13F filings for Q1 2026.