Jane Street’s T-Rex 2X Long HOOD Daily Target ETF ROBN Stock Holding History

Jane Street’s Portfolio ROBN Stock Details ROBN Fund Activity

Bought

Maintained

Sold

Quarter	Market Value	Status	Shares	Change in Stake	Trade Value	Portfolio Weight	Portfolio Position
2025 Q4	–	Sell	-43,183	Closed	-$3.56M	–	12795
2025 Q3	$4.65M	Buy	+43,183	New	+$2.9M	﹤0.01%	3522
2025 Q2	–	Sell	-53,254	Closed	-$1.25M	–	11296
2025 Q1	$668K	Buy	+53,254	New	+$1.05M	﹤0.01%	6330

Other funds holding ROBN

UBS Group Zurich, Switzerland $786B AUM 40.34% 1-Year Est. Return

Optiver Holding Amsterdam, Netherlands $371B AUM 64.6% 1-Year Est. Return

Susquehanna International Group Bala Cynwyd, Pennsylvania $1.28T AUM 58.89% 1-Year Est. Return

GTS Securities Miami, Florida $4.75B AUM 41.97% 1-Year Est. Return

HRT Financial New York $54.8B AUM 81.03% 1-Year Est. Return

IMC Chicago Chicago, Illinois $483B AUM 41.26% 1-Year Est. Return

Scientech Research LLC Jersey City, New Jersey $123M AUM 198.31% 1-Year Est. Return

Simplex Trading Chicago, Illinois $184B AUM 51.71% 1-Year Est. Return

Group One Trading Chicago, Illinois $71.1B AUM 128.96% 1-Year Est. Return

SBI Securities Tokyo, Japan $4.38B AUM 56.37% 1-Year Est. Return

Jane Street's ROBN Position: Q4 2025 in Review

Jane Street sold out of T-Rex 2X Long HOOD Daily Target ETF (ROBN) in Q4 2025, closing a stake of 43,183 shares — an estimated $3.56M sold.

Jane Street first reported a position in ROBN in Q1 2025 and held it in 2 quarters. The position peaked at $4.65M in Q3 2025. 17 funds tracked by Wall St. Rank hold ROBN as of Q4 2025.

Jane Street reported no remaining T-Rex 2X Long HOOD Daily Target ETF position as of Q4 2025 after selling out during the quarter.
Jane Street sold 43,183 T-Rex 2X Long HOOD Daily Target ETF shares in Q4 2025, an estimated $3.56M.
Jane Street first reported a position in T-Rex 2X Long HOOD Daily Target ETF in Q1 2025 and held it in 2 quarters.
Jane Street's T-Rex 2X Long HOOD Daily Target ETF position peaked at $4.65M in Q3 2025.
17 funds tracked by Wall St. Rank held T-Rex 2X Long HOOD Daily Target ETF as of Q4 2025.

Based on Jane Street's 13F filing for Q4 2025, filed 12 Feb 2026.