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 Q2	$483K	Buy	+41,614	New	+$559K	﹤0.01%	8104
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

OMC

Old Mission Capital Chicago, Illinois $6.31B AUM 20.77% 1-Year Est. Return

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

Fidelity Investments Boston, Massachusetts $2.3T AUM 54.33% 1-Year Est. Return

Wells Fargo San Francisco, California $617B AUM 30.33% 1-Year Est. Return

Jane Street's ULTI Position: Q2 2026 in Review

Jane Street opened a new position in REX IncomeMax Option Strategy ETF (ULTI) in Q2 2026: 41,614 shares worth $483K. The stake represents ﹤0.01% of the portfolio and ranks #8104 among its holdings. This is a return to the name: Jane Street previously reported a position in ULTI as recently as Q4 2025.

Jane Street first reported a position in ULTI in Q4 2025 and has held it in 2 quarters since. 6 funds tracked by Wall St. Rank hold ULTI as of Q2 2026.

Jane Street held 41,614 shares of REX IncomeMax Option Strategy ETF worth $483K as of Q2 2026.
REX IncomeMax Option Strategy ETF was a new Jane Street position in Q2 2026.
REX IncomeMax Option Strategy ETF made up ﹤0.01% of Jane Street's portfolio in Q2 2026, its #8104 holding.
Jane Street first reported a position in REX IncomeMax Option Strategy ETF in Q4 2025 and has held it in 2 quarters since.
6 funds tracked by Wall St. Rank held REX IncomeMax Option Strategy ETF as of Q2 2026.

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