OneStream Inc
OS was delisted on the 31st of March, 2026.
186 hedge funds and large institutions have $2.46B invested in OneStream Inc in 2025 Q2 according to their latest regulatory filings, with 65 funds opening new positions, 78 increasing their positions, 31 reducing their positions, and 18 closing their positions.
1,762% more call options, than puts
Call options by funds: $30.7M | Put options by funds: $1.65M
261% more first-time investments, than exits
New positions opened: 65 | Existing positions closed: 18
152% more repeat investments, than reductions
Existing positions increased: 78 | Existing positions reduced: 31
65% more capital invested
Capital invested by funds: $1.49B → $2.46B (+$973M)
32% more funds holding
Funds holding: 141 → 186 (+45)
20.24% more ownership
Funds ownership: 95.66% → 115.9% (+20%)
Top Buyers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
Vanguard Group
Malvern,
Pennsylvania
|
+$105M |
| 2 |
Goldman Sachs
New York
|
+$62.8M |
| 3 |
Marshall Wace
London,
United Kingdom
|
+$49M |
| 4 |
WA
Wasatch Advisors
Salt Lake City,
Utah
|
+$31.6M |
| 5 |
BlackRock
New York
|
+$25.4M |
Top Sellers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
Alkeon Capital Management
New York
|
-$39.3M |
| 2 |
Neuberger Berman Group
New York
|
-$14.2M |
| 3 |
AllianceBernstein
Nashville,
Tennessee
|
-$12.5M |
| 4 |
Massachusetts Financial Services
Boston,
Massachusetts
|
-$10.4M |
| 5 |
CIP
Champlain Investment Partners
Burlington,
Vermont
|
-$6.54M |
OS Hedge Fund Activity: Q2 2025 in Review
186 of the 7,603 institutional investors tracked by Wall St. Rank reported a position in OneStream Inc (OS) for Q2 2025, worth a combined $2.46B — up 65% from $1.49B a quarter earlier.
Buyers outnumbered sellers: 65 funds opened new OS positions and 18 closed out — a net gain of 47 holders — while 78 added to existing stakes and 31 trimmed.
The largest buyer was Vanguard Group, adding an estimated $105M. The largest seller was Alkeon Capital Management, cutting an estimated $39.3M.
- 186 institutional investors held OneStream Inc (OS) as of Q2 2025, up from 141 in Q1 2025.
- Funds reported $2.46B of OneStream Inc stock for Q2 2025, up 65% quarter-over-quarter.
- 65 funds opened new OneStream Inc positions in Q2 2025 and 18 closed out, a net change of +47 holders.
- The largest OneStream Inc buyer in Q2 2025 was Vanguard Group, an estimated $105M added.
- The largest OneStream Inc seller in Q2 2025 was Alkeon Capital Management, an estimated $39.3M sold.
Based on aggregated 13F filings for Q2 2025.