CytomX Therapeutics
CTMX · NASDAQ
$2.51+$0.17 (+7.26%)TodayMarket closed ·
Prev close $2.34
Who owns CTMX
Largest institutional holders, from their latest 13F filings
The 10 largest institutions hold 59.3% of CTMX’s shares.
- Fidelity Management & Research Company LLC12.2%
- Kynam Capital Management LP10.0%
- BlackRock Institutional Trust Company, N.A.7.1%
- State Street Investment Management (US)5.4%
- Next 6 largest institutions24.5%
- All other shareholders40.7%
| Holder | Shares | % of shares |
|---|---|---|
| Fidelity Management & Research Company LLC | 26.65M | 12.24% |
| Kynam Capital Management LP | 21.70M | 9.97% |
| BlackRock Institutional Trust Company, N.A. | 15.50M | 7.12% |
| State Street Investment Management (US) | 11.75M | 5.40% |
| Longitude Capital Management Co., LLC | 11.54M | 5.30% |
| Perceptive Advisors LLC | 10.44M | 4.80% |
| Bank of America Private Bank | 9.07M | 4.16% |
| Vanguard Capital Management, LLC | 8.53M | 3.92% |
| Point72 Asset Management, L.P. | 7.81M | 3.59% |
| BofA Global Research (US) | 6.02M | 2.76% |
Largest mutual fund holders
| Holder | Shares | % of shares |
|---|---|---|
| State Street SPDR S&P Biotech ETF | 8.40M | 3.86% |
| Vanguard Total Stock Market Index Fund | 6.23M | 2.86% |
| Fidelity Select Health Care Portfolio | 5.00M | 2.30% |
| iShares Russell 2000 ETF | 4.59M | 2.11% |
| Fidelity Small Cap Growth Fund | 3.97M | 1.82% |
Insider trades
Form 4 filings by officers, directors and large holders
Over the last 6 months, insiders sold $4.95K (1 trade) of CTMX on the open market, with no buys.
| Insider | Type | Shares | Value |
|---|---|---|---|
| Carvajal Alejandra | Award | 450.00K | — |
| Carvajal Alejandra | Award | 100.00K | — |
| Fuchs Charles S. | Award | 118.00K | — |
| Su Zhen | Award | 59.00K | — |
| Young Matthew P. | Award | 59.00K | — |
| Mohindru Mani | Award | 59.00K | — |
| Gilbert Halley E | Award | 59.00K | — |
| Ashworth Alan | Award | 59.00K | — |
| Meyers James R | Award | 59.00K | — |
| Jones Elaine V | Award | 59.00K | — |
Short interest
Settled Sep 30, 2026
- Shares short
- 40.81M
- Days to cover
- 8.67
- % of shares outstanding
- 18.75%
- Average daily volume
- 4.70M
- Change since last report
- +5.6%
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