MP
OSS icon

Mangrove Partners’s One Stop Systems OSS Stock Holding History

Mangrove Partners’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 		$181K Buy
+23,889
New +$223K 0.01% 381

Other funds holding OSS

VCM
Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM
Jane Street
Jane Street New York $777B AUM 61.18% 1-Year Est. Return
BlackRock
BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return
BA
Bard Associates Chicago, Illinois $398M AUM 54.32% 1-Year Est. Return
Morgan Stanley
Morgan Stanley New York $1.66T AUM 25.57% 1-Year Est. Return
Marshall Wace
Marshall Wace London, United Kingdom $100B AUM 35.1% 1-Year Est. Return
UBS Group
UBS Group Zurich, Switzerland $666B AUM 30.12% 1-Year Est. Return
Millennium Management
Millennium Management New York $240B AUM 35.51% 1-Year Est. Return
Citadel Advisors
Citadel Advisors Miami, Florida $618B AUM 30.34% 1-Year Est. Return
Renaissance Technologies
Renaissance Technologies New York $63.9B AUM 45.56% 1-Year Est. Return

Mangrove Partners's OSS Position: Q1 2026 in Review

Mangrove Partners opened a new position in One Stop Systems (OSS) in Q1 2026: 23,889 shares worth $181K. The stake represents 0.01% of the portfolio and ranks #381 among its holdings.

77 funds tracked by Wall St. Rank hold OSS as of Q1 2026.

  • Mangrove Partners held 23,889 shares of One Stop Systems worth $181K as of Q1 2026.
  • One Stop Systems was a new Mangrove Partners position in Q1 2026.
  • One Stop Systems made up 0.01% of Mangrove Partners's portfolio in Q1 2026, its #381 holding.
  • 77 funds tracked by Wall St. Rank held One Stop Systems as of Q1 2026.

Based on Mangrove Partners's 13F filing for Q1 2026, filed 15 May 2026.