Who owns C3.ai (AI)?
100 holders named in SEC filings declare between 59.7% and 69.2% of C3.ai's shares outstanding, as of Sep 30, 2026. The largest are Vanguard (9.9%), BlackRock (8.9%) and Thomas M. Siebel (7.7%); the five largest hold 31.8% together. Another 225 institutions hold small positions worth 1.9%. At least 29.0% 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 12.1% and sold 4.5% of the shares, a net purchase of 7.6%; 40 opened a position, 123 added, 69 reduced and 37 sold out. Biggest buyers: HRT FINANCIAL LP (+2.4M shares) and BlackRock (+2.0M shares). Biggest sellers: Marshall Wace (-841,050) and Two Sigma (-704,596). Directors and officers, from their latest Form 4: Thomas M. Siebel (7.7%), Robert David Schilling (0.63%) and Michael G. McCaffery (0.61%). Over time, 309 managers declared C3.ai in their 13F for Q2 2026, against 1 for Q4 2019: together at most 69.0% of the shares outstanding, against 0.00%.
| Holder | Filing | Share of capital | As of | Holding since (13F) |
|---|---|---|---|---|
| Vanguard | 13F | 9.9% | Jun 30, 2026 | Q4 2020 |
| BlackRock | 13F | 8.9% | Jun 30, 2026 | Q4 2020 |
| Thomas M. Siebel | Form 4 | 7.7% | Sep 30, 2026 | — |
| Morgan Stanley | 13F | 3.1% | Jun 30, 2026 | Q4 2020 |
| BNP PARIBAS FINANCIAL MARKETS | 13F | 2.2% | Jun 30, 2026 | Q4 2024 |
| State Street | 13F | 2.2% | Jun 30, 2026 | Q1 2021 |
| Geode Capital | 13F | 2.1% | Jun 30, 2026 | Q1 2021 |
| Goldman Sachs | 13F | 2.0% | Jun 30, 2026 | Q4 2020 |
| Millennium | 13F | 2.0% | Jun 30, 2026 | Q2 2024 |
| HRT FINANCIAL LP | 13F | 1.8% | Jun 30, 2026 | Q4 2024 |
| Bank of America | 13F | 1.8% | Jun 30, 2026 | Q4 2020 |
| Mirae Asset | 13F | 1.5% | Jun 30, 2026 | Q2 2021 |
| FEDERATED HERMES, INC. | 13F | 1.4% | Jun 30, 2026 | Q1 2025 |
| UBS | 13F | 1.1% | Jun 30, 2026 | Q4 2020 |
| Citadel | 13F | 1.1% | Jun 30, 2026 | Q4 2020 |
| Marshall Wace | 13F | 0.88% | Jun 30, 2026 | Q3 2024 |
| Susquehanna | 13F | 0.82% | Jun 30, 2026 | Q4 2023 |
| CAPITAL FUND MANAGEMENT S.A. | 13F | 0.80% | Jun 30, 2026 | Q1 2024 |
| JPMorgan | 13F | 0.78% | Jun 30, 2026 | Q4 2020 |
| Northern Trust | 13F | 0.73% | Jun 30, 2026 | Q1 2021 |
| Charles Schwab | 13F | 0.69% | Jun 30, 2026 | Q1 2021 |
| FIRST TRUST ADVISORS LP | 13F | 0.63% | Jun 30, 2026 | Q1 2022 |
| Robert David Schilling | Form 4 | 0.63% | Oct 1, 2025 | — |
| TUDOR INVESTMENT CORP ET AL | 13F | 0.62% | Jun 30, 2026 | Q4 2025 |
| Michael G. McCaffery | Form 4 | 0.61% | Mar 15, 2021 | — |
C3.ai institutional ownership over time
| Quarter | 13F managers | Share of the company (upper bound) | Value declared | Held by stock pickers |
|---|---|---|---|---|
| Q4 2019 | 1 | 0.00% | $7,000.00 | 100.0% |
| Q4 2020 | 149 | 41.9% | $5.9B | 84.9% |
| Q4 2021 | 237 | 47.4% | $1.5B | 61.3% |
| Q4 2022 | 207 | 40.4% | $492.5M | 48.4% |
| Q4 2023 | 310 | 45.4% | $1.5B | 41.5% |
| Q4 2024 | 366 | 52.2% | $2.3B | 40.2% |
| Q4 2025 | 334 | 56.3% | $1.1B | 33.7% |
| Q2 2026 | 309 | 69.0% | $881.8M | 32.8% |
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.