Jane Street
BTCZ

Jane Street’s T-Rex 2X Inverse Bitcoin Daily Target ETF BTCZ Stock Holding History

Jane Street’s Portfolio BTCZ Stock Details BTCZ Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q2 		$194K Sell
29,232
-205,111
-88% -$989K ﹤0.01% 10157
2026
Q1 		$1.28M Buy
234,343
+196,408
+518% +$983K ﹤0.01% 5967
2025
Q4 		$160K Buy
+37,935
New +$135K ﹤0.01% 9887
2025
Q1 		– Sell
-56,419
Closed -$335K – 10926
2024
Q4 		$335K Buy
56,419
+44,815
+386% +$438K ﹤0.01% 7558
2024
Q3 		$190K Buy
+11,604
New +$227K ﹤0.01% 8678

Other funds holding BTCZ

CAS
Coppell Advisory Solutions Coppell, Texas $1.21B AUM 20.39% 1-Year Est. Return
SG
StoneX Group New York $2.48B AUM 33.54% 1-Year Est. Return
HF
HRT Financial New York $54.8B AUM 81.03% 1-Year Est. Return
JF
Jump Financial Chicago, Illinois $12.4B AUM 62.79% 1-Year Est. Return
TSS
Two Sigma Securities New York $1.16B AUM 36.23% 1-Year Est. Return
IMC Chicago
IMC Chicago Chicago, Illinois $419B AUM 72.04% 1-Year Est. Return
FTUS
Flow Traders U.S. New York $2.43B AUM 44.44% 1-Year Est. Return
XT
XTX Topco George Town, Cayman Islands $7.72B AUM 32.88% 1-Year Est. Return
Simplex Trading
Simplex Trading Chicago, Illinois $171B AUM 85% 1-Year Est. Return

Jane Street's BTCZ Position: Q2 2026 in Review

Jane Street reduced its T-Rex 2X Inverse Bitcoin Daily Target ETF (BTCZ) stake by 88% in Q2 2026, selling an estimated $989K and leaving 29,232 shares worth $194K. The position accounts for ﹤0.01% of the portfolio, ranked #10157.

Jane Street first reported a position in BTCZ in Q3 2024 and has held it in 5 quarters since. The position peaked at $1.28M in Q1 2026. 10 funds tracked by Wall St. Rank hold BTCZ as of Q2 2026.

  • Jane Street held 29,232 shares of T-Rex 2X Inverse Bitcoin Daily Target ETF worth $194K as of Q2 2026.
  • Jane Street sold 205,111 T-Rex 2X Inverse Bitcoin Daily Target ETF shares in Q2 2026, an estimated $989K.
  • T-Rex 2X Inverse Bitcoin Daily Target ETF made up ﹤0.01% of Jane Street's portfolio in Q2 2026, its #10157 holding.
  • Jane Street first reported a position in T-Rex 2X Inverse Bitcoin Daily Target ETF in Q3 2024 and has held it in 5 quarters since.
  • Jane Street's T-Rex 2X Inverse Bitcoin Daily Target ETF position peaked at $1.28M in Q1 2026.
  • 10 funds tracked by Wall St. Rank held T-Rex 2X Inverse Bitcoin Daily Target ETF as of Q2 2026.

Based on Jane Street's 13F filing for Q2 2026, filed 14 Aug 2026.