Jane Street’s REX IncomeMax Option Strategy ETF ULTI Stock Holding History

Jane Street’s Portfolio ULTI Stock Details ULTI Fund Activity

Bought

Maintained

Sold

Quarter	Market Value	Status	Shares	Change in Stake	Trade Value	Portfolio Weight	Portfolio Position
2026 Q1	–	Sell	-18,745	Closed	-$264K	–	13625
2025 Q4	$264K	Buy	+18,745	New	+$343K	﹤0.01%	9119

Other funds holding ULTI

AWM

Apollon Wealth Management Mount Pleasant, South Carolina $8.23B AUM 30.88% 1-Year Est. Return

TRCT

Tower Research Capital (TRC) New York $3.85B AUM 32.11% 1-Year Est. Return

Fidelity Investments Boston, Massachusetts $1.9T AUM 41.92% 1-Year Est. Return

Wells Fargo San Francisco, California $530B AUM 22.01% 1-Year Est. Return

Jane Street's ULTI Position: Q1 2026 in Review

Jane Street sold out of REX IncomeMax Option Strategy ETF (ULTI) in Q1 2026, closing a stake of 18,745 shares — an estimated $264K sold.

Jane Street first reported a position in ULTI in Q4 2025 and held it in 1 quarter. The position peaked at $264K in Q4 2025. 4 funds tracked by Wall St. Rank hold ULTI as of Q1 2026.

Jane Street reported no remaining REX IncomeMax Option Strategy ETF position as of Q1 2026 after selling out during the quarter.
Jane Street sold 18,745 REX IncomeMax Option Strategy ETF shares in Q1 2026, an estimated $264K.
Jane Street first reported a position in REX IncomeMax Option Strategy ETF in Q4 2025 and held it in 1 quarter.
Jane Street's REX IncomeMax Option Strategy ETF position peaked at $264K in Q4 2025.
4 funds tracked by Wall St. Rank held REX IncomeMax Option Strategy ETF as of Q1 2026.

Based on Jane Street's 13F filing for Q1 2026, filed 12 May 2026.