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OS

OneStream Inc
OS

Delisted

OS was delisted on the 31st of March, 2026.

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0 hedge funds and large institutions have $0 invested in OneStream Inc in 2026 Q2 according to their latest regulatory filings, with 0 funds opening new positions, 0 increasing their positions, 0 reducing their positions, and 171 closing their positions.

New
Increased
Maintained
Reduced
Closed

93.59% less ownership

Funds ownership: 93.59% → 0% (-94%)

100% less funds holding

Funds holding: 180 → 0 (-180)

100% less funds holding in top 10

Funds holding in top 10: 11 → 0 (-11)

100% less capital invested

Capital invested by funds: $2.23B → $0 (-$2.23B)

100% less first-time investments, than exits

New positions opened: 0 | Existing positions closed: 171

Holders
–
Holders Change
-180
Holders Change %
-100%
% of All Funds
–
Holding in Top 10
–
Holding in Top 10 Change
-11
Holding in Top 10 Change %
-100%
% of All Funds
–
New
–
Increased
–
Reduced
–
Closed
171
Calls
–
Puts
–
Net Calls
–
Net Calls Change
–

Top Buyers

No buyers this quarter

Top Sellers

Rank Fund Capital Flow
1
Vanguard Portfolio Management
Vanguard Portfolio Management
Pennsylvania
-$118M
2
Temasek Holdings
Temasek Holdings
Singapore
-$102M
3
Fidelity International
Fidelity International
Bermuda
-$95.8M
4
Vanguard Capital Management
Vanguard Capital Management
Pennsylvania
-$93.2M
5
AA
AQR Arbitrage
Connecticut
-$81.4M
Name Holding Trade Value Shares
Change 		Change in
Stake
CL
76
CSS LLC
Illinois
– -$1.57M -65,508 Closed
YCM
77
Yakira Capital Management
Connecticut
– -$1.46M -60,978 Closed
TS
78
Twin Securities
New York
– -$1.45M -60,372 Closed
LP
79
LMR Partners
United Kingdom
– -$1.34M -56,035 Closed
FCM
80
Fieldview Capital Management
Michigan
– -$1.32M -54,807 Closed
Vanguard Asset Management
81
Vanguard Asset Management
– -$1.29M -53,765 Closed
Legal & General Group
82
Legal & General Group
United Kingdom
– -$1.26M -52,631 Closed
COPPSERS
83
Commonwealth of Pennsylvania Public School Employees Retirement System
Pennsylvania
– -$1.2M -50,000 Closed
IC
84
IEQ Capital
California
– -$1.13M -47,170 Closed
Fidelity Investments
85
Fidelity Investments
Massachusetts
– -$1.1M -45,762 Closed
TH
86
Transmarket Holdings
Illinois
– -$1.03M -42,726 Closed
KC
87
Kintayl Capital
New York
– -$1.02M -42,508 Closed
Point72 Asset Management
88
Point72 Asset Management
Connecticut
– -$907K -37,775 Closed
State of Wisconsin Investment Board
89
State of Wisconsin Investment Board
Wisconsin
– -$900K -37,487 Closed
VI
90
Versor Investments
New York
– -$812K -33,832 Closed
SSA
91
Schonfeld Strategic Advisors
New York
– -$809K -33,709 Closed
Barclays
92
Barclays
United Kingdom
– -$794K -33,072 Closed
Vanguard Global Advisers
93
Vanguard Global Advisers
Pennsylvania
– -$780K -32,510 Closed
OAM
94
Oxford Asset Management
United Kingdom
– -$728K -30,350 Closed
BHCM
95
Brevan Howard Capital Management
Jersey
– -$653K -27,198 Closed
Bank of New York Mellon
96
Bank of New York Mellon
New York
– -$629K -26,216 Closed
PGFC
97
Peapack-Gladstone Financial Corp
New Jersey
– -$610K -25,400 Closed
Cerity Partners
98
Cerity Partners
New York
– -$604K -25,159 Closed
CFM
99
Catalyst Funds Management
Australia
– -$581K -24,200 Closed
Mariner
100
Mariner
Kansas
– -$570K -23,767 Closed
2 3
4
5 6

OS Hedge Fund Activity: Q2 2026 in Review

0 of the 8,153 institutional investors tracked by Wall St. Rank reported a position in OneStream Inc (OS) for Q2 2026, worth a combined $0 — down 100% from $2.23B a quarter earlier.

Sellers outnumbered buyers: 171 funds closed out of OS and 0 opened new positions — a net loss of 171 holders — while 0 trimmed existing stakes and 0 added.

The largest seller was Vanguard Portfolio Management, exiting entirely with an estimated $118M sold.

  • 0 institutional investors held OneStream Inc (OS) as of Q2 2026, down from 180 in Q1 2026.
  • Funds reported $0 of OneStream Inc stock for Q2 2026, down 100% quarter-over-quarter.
  • 0 funds opened new OneStream Inc positions in Q2 2026 and 171 closed out, a net change of -171 holders.
  • The largest OneStream Inc seller in Q2 2026 was Vanguard Portfolio Management, an estimated $118M sold.

Based on aggregated 13F filings for Q2 2026.