Security record · archived quarter
OS
OneStream, Inc. Class A Common Stock · Technology · Software - Application
15Tracked holders
-3Δ holders
19.82MShares held
$365.31MReported value
+1New positions
−5Exits
Momentum inputs (comparable managers):
holder breadth -16.7% ·
share flow +5.8% ·
net new positions -20.0%
— formula
Concentrated accumulation — rising shares among fewer holders
All ownership figures: tracked 13F managers only, common-stock positions, reporting period Q3 2025
Ownership over time
| Quarter | Holders | Δ | Shares | Reported value | New | Exits |
|---|---|---|---|---|---|---|
| Q1 2026 | 65 | -9 | 41.09M | $977.54M | +12 | −22 |
| Q4 2025 | 75 | +2 | 49.93M | $917.68M | +3 | — |
| Q3 2025 | 15 | -3 | 19.82M | $365.31M | +1 | −5 |
| Q2 2025 | 16 | +1 | 23.05M | $652.40M | +2 | −1 |
| Q1 2025 | 12 | 0 | 9.61M | $205.10M | +2 | −2 |
| Q4 2024 | 12 | -2 | 9.49M | $270.70M | +1 | −3 |
| Q3 2024 | 13 | +13 | 6.41M | $217.37M | +13 | — |
Who holds it · Q3 2025
| # | Manager | Shares | Δ shares | Value | Their weight | Held | ||
|---|---|---|---|---|---|---|---|---|
| 1 | The Vanguard Group ✦ (passive) | 8.61M | +10.1% | $158.61M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 2 | The Vanguard Group ✦ (passive) | 8.61M | +10.1% | $158.61M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 3 | The Vanguard Group ✦ (passive) | 8.61M | +10.1% | $158.61M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 4 | The Vanguard Group ✦ (passive) | 8.61M | +10.1% | $158.61M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 5 | The Vanguard Group ✦ (passive) | 8.61M | +10.1% | $158.61M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 6 | Marshall Wace ✦ | 2.48M | +24.8% | $45.74M | 0.1% | ▲ Add | 5 | SEC ↗ |
| 7 | Marshall Wace ✦ | 2.48M | +24.8% | $45.74M | 0.1% | ▲ Add | 5 | SEC ↗ |
| 8 | Marshall Wace ✦ | 2.48M | +24.8% | $45.74M | 0.1% | ▲ Add | 5 | SEC ↗ |
| 9 | BlackRock ✦ (passive) | 2.10M | +2.6% | $38.75M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 10 | BlackRock ✦ (passive) | 2.10M | +2.6% | $38.75M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 11 | BlackRock ✦ (passive) | 2.10M | +2.6% | $38.75M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 12 | BlackRock ✦ (passive) | 2.10M | +2.6% | $38.75M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 13 | BlackRock ✦ (passive) | 2.10M | +2.6% | $38.75M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 14 | BlackRock ✦ (passive) | 2.10M | +2.6% | $38.75M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 15 | BlackRock ✦ (passive) | 2.10M | +2.6% | $38.75M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 16 | BlackRock ✦ (passive) | 2.10M | +2.6% | $38.75M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 17 | BlackRock ✦ (passive) | 2.10M | +2.6% | $38.75M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 18 | Wellington Management ✦ | 1.26M | New | $23.25M | 0.0% | New | 1 | SEC ↗ |
| 19 | Wellington Management ✦ | 1.26M | New | $23.25M | 0.0% | New | 1 | SEC ↗ |
| 20 | Wellington Management ✦ | 1.26M | New | $23.25M | 0.0% | New | 1 | SEC ↗ |
| 21 | Morgan Stanley ✦ | 1.15M | — | $21.13M | 0.0% | n/c | 1 | SEC ↗ |
| 22 | Morgan Stanley ✦ | 1.15M | — | $21.13M | 0.0% | n/c | 1 | SEC ↗ |
| 23 | Morgan Stanley ✦ | 1.15M | — | $21.13M | 0.0% | n/c | 1 | SEC ↗ |
| 24 | Morgan Stanley ✦ | 1.15M | — | $21.13M | 0.0% | n/c | 1 | SEC ↗ |
| 25 | Morgan Stanley ✦ | 1.15M | — | $21.13M | 0.0% | n/c | 1 | SEC ↗ |
| 26 | Morgan Stanley ✦ | 1.15M | — | $21.13M | 0.0% | n/c | 1 | SEC ↗ |
| 27 | Morgan Stanley ✦ | 1.15M | — | $21.13M | 0.0% | n/c | 1 | SEC ↗ |
| 28 | Geode Capital Management ✦ (passive) | 1.03M | +8.4% | $18.92M | 0.0% | ▲ Add | 5 | SEC ↗ |
| 29 | Geode Capital Management ✦ (passive) | 1.03M | +8.4% | $18.92M | 0.0% | ▲ Add | 5 | SEC ↗ |
| 30 | State Street Global Advisors ✦ (passive) | 720.05K | +7.6% | $13.27M | 0.0% | ▲ Add | 4 | SEC ↗ |
| 31 | Millennium Management ✦ | 703.78K | -10.6% | $12.97M | 0.0% | ▼ Trim | 5 | SEC ↗ |
| 32 | Goldman Sachs Group ✦ | 662.89K | — | $12.22M | 0.0% | n/c | 1 | SEC ↗ |
| 33 | Goldman Sachs Group ✦ | 662.89K | — | $12.22M | 0.0% | n/c | 1 | SEC ↗ |
| 34 | Goldman Sachs Group ✦ | 662.89K | — | $12.22M | 0.0% | n/c | 1 | SEC ↗ |
| 35 | Citadel Advisors ✦ | 400.86K | -66.9% | $7.39M | 0.0% | ▼ Trim | 5 | SEC ↗ |
| 36 | Citadel Advisors ✦ | 400.86K | -66.9% | $7.39M | 0.0% | ▼ Trim | 5 | SEC ↗ |
| 37 | Soros Fund Management ✦ | 322.60K | -48.5% | $5.95M | 0.1% | ▼ Trim | 5 | SEC ↗ |
| 38 | JPMorgan Chase ✦ | 219.69K | — | $4.05M | 0.0% | n/c | 1 | SEC ↗ |
| 39 | JPMorgan Chase ✦ | 219.69K | — | $4.05M | 0.0% | n/c | 1 | SEC ↗ |
| 40 | PRIMECAP Management ✦ | 102.90K | -2.8% | $1.90M | 0.0% | ▼ Trim | 5 | SEC ↗ |
| 41 | Fidelity (FMR) ✦ | 46.14K | +1.1% | $850,327 | 0.0% | ▲ Add | 2 | SEC ↗ |
| 42 | Fidelity (FMR) ✦ | 46.14K | +1.1% | $850,327 | 0.0% | ▲ Add | 2 | SEC ↗ |
| 43 | T. Rowe Price ✦ | 17.16K | +70.6% | $317,000 | 0.0% | ▲ Add | 5 | SEC ↗ |
“Their weight” = the position's share of that manager's reported 13F equity value — the conviction measure. ✦ = curated manager.
New buyers
| Wellington Management | $23.25M | 0.0% |
| Wellington Management | $23.25M | 0.0% |
| Wellington Management | $23.25M | 0.0% |
Exited
| Norges Bank | $179.52M | was 0.0% |
| D. E. Shaw & Co. | $10.51M | was 0.0% |
| Two Sigma Investments | $1.61M | was 0.0% |
| Arrowstreet Capital | $370,277 | was 0.0% |
| Renaissance Technologies | $260,360 | was 0.0% |
Full-market context: across ALL 13F filers (SEC structured data, Q1 2026): 178 holders, 91.55M shares, $1.97B reported. This is a different, older period than the tracked-universe figures above and the two are never mixed.
Frequently co-owned
What else this security's tracked holders most often hold — shared-ownership counts, not fundamental relationships.
Provenance: Ownership from parsed 13F common-stock positions (tracked universe, comparable sets for changes); insider rows from Forms 3/4/5; stakes from Schedules 13D/13G; every filing links to its original on SEC EDGAR.
Reporting period: Q3 2025 ·
Methodology ·
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