Who owns CoreWeave (CRWV)?
105 holders named in SEC filings declare between 78.5% and 86.0% of CoreWeave's shares outstanding, as of Sep 30, 2026. The largest are Magnetar Financial LLC (9.4%), Michael N. Intrator (9.4%) and NVIDIA Corporation (8.6%); the five largest hold 38.2% together. Another 867 institutions hold small positions worth 3.7%. At least 10.3% of the shares appear in no ownership filing: investors who do not have to report, mostly individuals. From Mar 31, 2026 to Jun 30, 2026, institutions that filed both quarters bought 20.0% and sold 5.6% of the shares, a net purchase of 14.4%; 261 opened a position, 390 added, 167 reduced and 75 sold out. Biggest buyers: BlackRock (+14.7M shares) and Invesco (+11.4M shares). Biggest sellers: Magnetar Financial LLC (-16.5M) and Amundi (-1.8M). Schedule 13D/G filings since Mar 31, 2026: Brannin McBee fell below 5% (2.5% still declared) on Jun 30, 2026, Brian Venturo fell below 5% (3.1% still declared) on Jun 30, 2026, JANE STREET GROUP, LLC raised its stake to 5.0% on Jun 30, 2026 and Michael N Intrator crossed 5% (9.2%) on Jun 30, 2026. Directors and officers, from their latest Form 4: Michael N. Intrator (9.4%), Brian M. Venturo (4.1%) and Jack D. Cogen (2.4%). Over time, 956 managers declared CoreWeave in their 13F for Q2 2026, against 105 for Q1 2025: together at most 72.3% of the shares outstanding, against 86.9%.
| Holder | Filing | Share of capital | As of | Holding since (13F) |
|---|---|---|---|---|
| Magnetar Financial LLC | 13F | 9.4% | Jun 30, 2026 | Q1 2025 |
| Michael N. Intrator | Form 4 | 9.4% | Sep 30, 2026 | — |
| NVIDIA Corporation | 13F | 8.6% | Jun 30, 2026 | Q1 2025 |
| Vanguard | 13F | 6.4% | Jun 30, 2026 | Q1 2025 |
| BlackRock | 13F | 4.4% | Jun 30, 2026 | Q1 2025 |
| Brian M. Venturo | Form 4 | 4.1% | Sep 30, 2026 | — |
| Goldman Sachs | 13F | 3.3% | Jun 30, 2026 | Q1 2025 |
| Jane Street | 13F | 2.5% | Jun 30, 2026 | Q1 2025 |
| Jack D. Cogen | Form 4 | 2.4% | May 29, 2026 | — |
| Invesco | 13F | 2.2% | Jun 30, 2026 | Q2 2025 |
| Alyeska Investment Group, L.P. | 13F | 2.0% | Jun 30, 2026 | Q1 2025 |
| Value Aligned Research Advisors, LLC | 13F | 2.0% | Jun 30, 2026 | Q3 2025 |
| Bank of America | 13F | 1.5% | Jun 30, 2026 | Q1 2025 |
| PEAK6 LLC | 13F | 1.5% | Jun 30, 2026 | Q1 2025 |
| Aspex Management (HK) Ltd | 13F | 1.4% | Jun 30, 2026 | Q1 2026 |
| Brannin McBee | Form 4 | 1.4% | Sep 30, 2026 | — |
| Situational Awareness LP | 13F | 1.4% | Jun 30, 2026 | Q3 2025 |
| State Street | 13F | 1.3% | Jun 30, 2026 | Q2 2025 |
| Altimeter Capital Management, LP | 13F | 1.1% | Jun 30, 2026 | Q4 2025 |
| Geode Capital | 13F | 1.1% | Jun 30, 2026 | Q1 2025 |
| UBS | 13F | 1.1% | Jun 30, 2026 | Q1 2025 |
| Barclays | 13F | 0.81% | Jun 30, 2026 | Q2 2025 |
| Norges Bank | 13F | 0.78% | Jun 30, 2026 | Q2 2026 |
| JENNISON ASSOCIATES LLC | 13F | 0.73% | Jun 30, 2026 | Q1 2026 |
| Fidelity (FMR) | 13F | 0.71% | Jun 30, 2026 | Q1 2025 |
CoreWeave institutional ownership over time
| Quarter | 13F managers | Share of the company (upper bound) | Value declared | Held by stock pickers |
|---|---|---|---|---|
| Q4 2025 | 717 | 59.1% | $18.5B | 68.7% |
| Q2 2026 | 956 | 72.3% | $39.6B | 63.6% |
From SEC Form 13F, every quarter since the end of 2019, read like the current quarter: entities of a house summed, a value contradicting its share count set aside. The share of the company is an upper bound — two managers can declare the same shares — over the shares outstanding at that date.