Ken Griffin
MSTZ

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

Ken Griffin’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 		– Sell
-13,364
Closed -$179K – 14541
2025
Q4 		$229K Sell
13,364
-285,372
-96% -$2.9M ﹤0.01% 10737
2025
Q3 		$1.57M Buy
298,736
+111,214
+59% +$499K ﹤0.01% 6568
2025
Q2 		$784K Sell
187,522
-124,972
-40% -$784K ﹤0.01% 7610
2025
Q1 		$4.38M Buy
+312,494
New +$5.48M ﹤0.01% 4098

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

Ken Griffin's MSTZ Position: Q1 2026 in Review

Ken Griffin sold out of T-Rex 2X Inverse MSTR Daily Target ETF (MSTZ) in Q1 2026, closing a stake of 13,364 shares — an estimated $179K sold.

Ken Griffin first reported a position in MSTZ in Q1 2025 and held it in 4 quarters. The position peaked at $4.38M in Q1 2025. 16 funds tracked by Wall St. Rank hold MSTZ as of Q1 2026.

  • Ken Griffin reported no remaining T-Rex 2X Inverse MSTR Daily Target ETF position as of Q1 2026 after selling out during the quarter.
  • Ken Griffin sold 13,364 T-Rex 2X Inverse MSTR Daily Target ETF shares in Q1 2026, an estimated $179K.
  • Ken Griffin first reported a position in T-Rex 2X Inverse MSTR Daily Target ETF in Q1 2025 and held it in 4 quarters.
  • Ken Griffin's T-Rex 2X Inverse MSTR Daily Target ETF position peaked at $4.38M in Q1 2025.
  • 16 funds tracked by Wall St. Rank held T-Rex 2X Inverse MSTR Daily Target ETF as of Q1 2026.

Based on Citadel Advisors's 13F filing for Q1 2026, filed 15 May 2026.