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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
Vanguard Portfolio Management
1
Vanguard Portfolio Management
Pennsylvania
– -$118M -4,900,450 Closed
Temasek Holdings
2
Temasek Holdings
Singapore
– -$102M -4,266,714 Closed
Fidelity International
3
Fidelity International
Bermuda
– -$95.8M -3,992,145 Closed
Vanguard Capital Management
4
Vanguard Capital Management
Pennsylvania
– -$93.2M -3,882,231 Closed
AA
5
AQR Arbitrage
Connecticut
– -$81.4M -3,393,367 Closed
NAM
6
Nexpoint Asset Management
Texas
– -$80.6M -3,358,217 Closed
OCAI
7
O'Connor Alternative Investments
New York
– -$76.5M -3,186,804 Closed
PAMP
8
Polar Asset Management Partners
Ontario, Canada
– -$70.7M -2,944,378 Closed
Millennium Management
9
Millennium Management
New York
– -$59.3M -2,471,107 Closed
BlackRock
10
BlackRock
New York
– -$56.1M -2,339,550 Closed
UBS Group
11
UBS Group
Switzerland
– -$54.2M -2,257,069 Closed
Man Group
12
Man Group
United Kingdom
– -$52.9M -2,204,520 Closed
Goldman Sachs
13
Goldman Sachs
New York
– -$47.7M -1,985,820 Closed
Citadel Advisors
14
Citadel Advisors
Florida
– -$45.4M -1,890,118 Closed
PCM
15
Pentwater Capital Management
Florida
– -$45.4M -1,890,000 Closed
FTCM
16
First Trust Capital Management
Illinois
– -$44.2M -1,842,189 Closed
SFM
17
Soros Fund Management
New York
– -$43.9M -1,830,222 Closed
TAL
18
TIG Advisors LLC
New York
– -$41.7M -1,738,231 Closed
Morgan Stanley
19
Morgan Stanley
New York
– -$39.6M -1,651,031 Closed
HSBC Holdings
20
HSBC Holdings
United Kingdom
– -$38.3M -1,595,839 Closed
AllianceBernstein
21
AllianceBernstein
Tennessee
– -$28.2M -1,535,061 Closed
JP Morgan Chase
22
JP Morgan Chase
New York
– -$35.2M -1,467,884 Closed
OBAM
23
ODDO BHF Asset Management
France
– -$34.8M -1,450,000 Closed
Healthcare of Ontario Pension Plan (HOOPP) Trust Fund
24
Healthcare of Ontario Pension Plan (HOOPP) Trust Fund
Ontario, Canada
– -$29.6M -1,234,961 Closed
Qube Research & Technologies (QRT)
25
Qube Research & Technologies (QRT)
United Kingdom
– -$27.2M -1,133,221 Closed
1
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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.