CytomX Therapeutics Inc
Ownership
Ownership Structure
Who owns CytomX Therapeutics Inc (CTMX)? This page shows the largest institutions and funds, the ownership structure and the latest insider transactions. 82.5% of the shares are freely tradable; institutional investors hold 105.4%.
Largest Shareholders
Institutions
| Name | Stake (%) | Shares | Change (%) | Date |
|---|---|---|---|---|
| FMR Inc | 15.01 | 32,714,937 | +2.4 | 06/30/2026 |
| Kynam Capital Management, LP | 9.96 | 21,703,093 | +44.6 | 06/30/2026 |
| BlackRock Inc | 8.05 | 17,559,822 | +235.9 | 06/30/2026 |
| Bank of America Corp | 6.92 | 15,082,617 | +47.8 | 06/30/2026 |
| State Street Corp | 5.39 | 11,747,236 | +107.4 | 06/30/2026 |
| Perceptive Advisors LLC | 4.79 | 10,439,185 | +3.4 | 06/30/2026 |
| Vanguard Capital Management, LLC | 3.91 | 8,525,457 | -2.4 | 06/30/2026 |
| Point72 Asset Management, L.P. | 3.58 | 7,811,033 | -0.8 | 06/30/2026 |
Funds
| Name | Stake (%) | Shares | Change (%) | Date |
|---|---|---|---|---|
| Vanguard MStar Total Stk Mkt Idx Invest | 2.86 | 6,230,387 | +0.0 | 09/30/2026 |
| Fidelity Select Health Care | 2.75 | 6,000,000 | +20.0 | 08/31/2026 |
Largest reported positions according to regulatory filings; stake as a percentage of shares outstanding, change versus the previous filing. Source: fundamentals data.
Data as of: November 13, 2026 · Source: fundamental data & SEC filings (annual and quarterly reports, 10-K/10-Q)
Note: pure fact-based analysis, not investment advice and not a solicitation to buy or sell. All figures without guarantee.