OneStream Inc
OS was delisted on the 31st of March, 2026.
185 hedge funds and large institutions have $1.45B invested in OneStream Inc in 2025 Q3 according to their latest regulatory filings, with 52 funds opening new positions, 49 increasing their positions, 62 reducing their positions, and 51 closing their positions.
144% more call options, than puts
Call options by funds: $11.9M | Put options by funds: $4.89M
2% more first-time investments, than exits
New positions opened: 52 | Existing positions closed: 51
1% less funds holding
Funds holding: 186 → 185 (-1)
21% less repeat investments, than reductions
Existing positions increased: 49 | Existing positions reduced: 62
26.59% less ownership
Funds ownership: 115.9% → 89.3% (-27%)
41% less capital invested
Capital invested by funds: $2.46B → $1.45B (-$1.01B)
100% less funds holding in top 10
Funds holding in top 10: 1 → 0 (-1)
Top Buyers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
Temasek Holdings
Singapore
|
+$28.8M |
| 2 |
Wellington Management Group
Boston,
Massachusetts
|
+$27.7M |
| 3 |
Brown Advisory
Baltimore,
Maryland
|
+$22.9M |
| 4 |
Vanguard Group
Malvern,
Pennsylvania
|
+$17.3M |
| 5 |
Susquehanna International Group
Bala Cynwyd,
Pennsylvania
|
+$12.4M |
Top Sellers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
Goldman Sachs
New York
|
-$65M |
| 2 |
CIP
Champlain Investment Partners
Burlington,
Vermont
|
-$19.5M |
| 3 |
Citadel Advisors
Miami,
Florida
|
-$17.8M |
| 4 |
Kayne Anderson Rudnick Investment Management
Los Angeles,
California
|
-$14.6M |
| 5 |
American Century Companies
Kansas City,
Missouri
|
-$11.1M |
OS Hedge Fund Activity: Q3 2025 in Review
185 of the 7,630 institutional investors tracked by Wall St. Rank reported a position in OneStream Inc (OS) for Q3 2025, worth a combined $1.45B — down 41% from $2.46B a quarter earlier.
Buyers outnumbered sellers: 52 funds opened new OS positions and 51 closed out — a net gain of 1 holder — while 49 added to existing stakes and 62 trimmed.
The largest buyer was Temasek Holdings, adding an estimated $28.8M. The largest seller was Goldman Sachs, cutting an estimated $65M.
- 185 institutional investors held OneStream Inc (OS) as of Q3 2025, down from 186 in Q2 2025.
- Funds reported $1.45B of OneStream Inc stock for Q3 2025, down 41% quarter-over-quarter.
- 52 funds opened new OneStream Inc positions in Q3 2025 and 51 closed out, a net change of +1 holder.
- The largest OneStream Inc buyer in Q3 2025 was Temasek Holdings, an estimated $28.8M added.
- The largest OneStream Inc seller in Q3 2025 was Goldman Sachs, an estimated $65M sold.
Based on aggregated 13F filings for Q3 2025.