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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
RFP
151
Root Financial Partners
California
– -$8.09K -337 Closed
GI
152
GAMMA Investing
California
– -$7.32K -305 Closed
PA
153
Parallel Advisors
California
– -$7.03K -293 Closed
FFA
154
Farther Finance Advisors
California
– -$4.54K -189 Closed
RCM
155
Richardson Capital Management
Wisconsin
– -$3.5K -146 Closed
FDW
156
Fourth Dimension Wealth
Ohio
– -$3.36K -140 Closed
MCM
157
MAI Capital Management
Ohio
– -$2.04K -85 Closed
WPA
158
Wealth Preservation Advisors
Tennessee
– -$2.04K -85 Closed
TWD
159
True Wealth Design
Ohio
– -$1.78K -74 Closed
Kayne Anderson Rudnick Investment Management
160
Kayne Anderson Rudnick Investment Management
California
– -$1.61K -67 Closed
Rockefeller Capital Management
161
Rockefeller Capital Management
New York
– -$1.25K -52 Closed
Northwestern Mutual Wealth Management
162
Northwestern Mutual Wealth Management
Wisconsin
– -$1.2K -50 Closed
CAL
163
Capital Advisors Ltd
Ohio
– -$1K -45 Closed
IAIM
164
International Assets Investment Management
Florida
– -$1.06K -44 Closed
MAM
165
Marquette Asset Management
Minnesota
– -$1.01K -42 Closed
FG
166
Fairman Group
Pennsylvania
– -$816 -34 Closed
SIC
167
SJS Investment Consulting
Ohio
– -$672 -28 Closed
CFO
168
CVA Family Office
Colorado
– -$504 -21 Closed
ASN
169
Advisory Services Network
Georgia
– -$120 -5 Closed
TWC
170
TD Waterhouse Canada
Ontario, Canada
– -$72 -3 Closed
DF
171
Dunhill Financial
United Kingdom
– -$41 -1 Closed
3 4 5 6
7

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.