OneStream Inc
OS was delisted on the 31st of March, 2026.
183 hedge funds and large institutions have $1.51B invested in OneStream Inc in 2025 Q4 according to their latest regulatory filings, with 39 funds opening new positions, 58 increasing their positions, 65 reducing their positions, and 39 closing their positions.
43% more call options, than puts
Call options by funds: $5.62M | Put options by funds: $3.94M
4% more capital invested
Capital invested by funds: $1.45B → $1.51B (+$56.4M)
0% more first-time investments, than exits
New positions opened: 39 | Existing positions closed: 39
1% less funds holding
Funds holding: 185 → 183 (-2)
5.43% less ownership
Funds ownership: 89.3% → 83.87% (-5.4%)
11% less repeat investments, than reductions
Existing positions increased: 58 | Existing positions reduced: 65
Top Buyers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
Fuller & Thaler Asset Management
San Mateo,
California
|
+$49.4M |
| 2 |
Citadel Advisors
Miami,
Florida
|
+$35.7M |
| 3 |
MCM
Moore Capital Management
New York
|
+$23M |
| 4 |
TCM
Tensile Capital Management
Larkspur,
California
|
+$10.3M |
| 5 |
Point72 Asset Management
Stamford,
Connecticut
|
+$8.98M |
Top Sellers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
AllianceBernstein
Nashville,
Tennessee
|
-$49M |
| 2 |
T. Rowe Price Investment Management
Baltimore,
Maryland
|
-$30.6M |
| 3 |
Kayne Anderson Rudnick Investment Management
Los Angeles,
California
|
-$25.6M |
| 4 |
Royal Bank of Canada
Toronto,
Ontario, Canada
|
-$18.7M |
| 5 |
CIP
Champlain Investment Partners
Burlington,
Vermont
|
-$14.7M |
OS Hedge Fund Activity: Q4 2025 in Review
183 of the 8,281 institutional investors tracked by Wall St. Rank reported a position in OneStream Inc (OS) for Q4 2025, worth a combined $1.51B — up 3.9% from $1.45B a quarter earlier.
Fund positioning in OS was balanced in Q4 2025: 39 funds opened new positions, 39 closed out, 58 added to existing stakes and 65 trimmed.
The largest buyer was Fuller & Thaler Asset Management, opening a new position worth an estimated $49.4M. The largest seller was AllianceBernstein, exiting entirely with an estimated $49M sold.
- 183 institutional investors held OneStream Inc (OS) as of Q4 2025, down from 185 in Q3 2025.
- Funds reported $1.51B of OneStream Inc stock for Q4 2025, up 3.9% quarter-over-quarter.
- 39 funds opened new OneStream Inc positions in Q4 2025 and 39 closed out, a net change of 0 holders.
- The largest OneStream Inc buyer in Q4 2025 was Fuller & Thaler Asset Management, an estimated $49.4M added.
- The largest OneStream Inc seller in Q4 2025 was AllianceBernstein, an estimated $49M sold.
Based on aggregated 13F filings for Q4 2025.