Jane Street’s One Stop Systems OSS Stock Holding History

Jane Street’s Portfolio OSS Stock Details OSS Fund Activity

Bought

Maintained

Sold

Quarter	Market Value	Status	Shares	Change in Stake	Trade Value	Portfolio Weight	Portfolio Position
2026 Q1	$102K	Buy	+13,500	New	+$126K	﹤0.01%	10644
2025 Q2	–	Sell	-15,100	Closed	-$35K	–	10517
2025 Q1	$35K	Buy	+15,100	New	+$50.6K	﹤0.01%	9070

Other funds holding OSS

VCM

Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM

BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return

Bard Associates Chicago, Illinois $398M AUM 54.32% 1-Year Est. Return

Morgan Stanley New York $1.66T AUM 25.57% 1-Year Est. Return

Marshall Wace London, United Kingdom $100B AUM 35.1% 1-Year Est. Return

UBS Group Zurich, Switzerland $666B AUM 30.12% 1-Year Est. Return

Millennium Management New York $240B AUM 35.51% 1-Year Est. Return

Citadel Advisors Miami, Florida $618B AUM 30.34% 1-Year Est. Return

Renaissance Technologies New York $63.9B AUM 45.56% 1-Year Est. Return

DnB Asset Management Oslo, Norway $28B AUM 26% 1-Year Est. Return

Jane Street's OSS Position: Q1 2026 in Review

Jane Street increased its One Stop Systems (OSS) stake by 45% in Q1 2026, buying an estimated $2.52M and bringing the position to 874,558 shares worth $6.62M. The position accounts for ﹤0.01% of the portfolio, ranked #3105.

Jane Street first reported a position in OSS in Q1 2021 and has held it in 8 quarters since. 77 funds tracked by Wall St. Rank hold OSS as of Q1 2026.

Jane Street held 874,558 shares of One Stop Systems worth $6.62M as of Q1 2026.
Jane Street bought 270,753 One Stop Systems shares in Q1 2026, an estimated $2.52M.
One Stop Systems made up ﹤0.01% of Jane Street's portfolio in Q1 2026, its #3105 holding.
Jane Street first reported a position in One Stop Systems in Q1 2021 and has held it in 8 quarters since.
77 funds tracked by Wall St. Rank held One Stop Systems as of Q1 2026.

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