CytomX Therapeutics, Inc. (CTMX)
PHARMACEUTICAL PREPARATIONS
CytomX Therapeutics, Inc. (CTMX) is listed on Nasdaq, where it has traded since October 8, 2015.
- Listed On
- Nasdaq
- Listed Since
- October 8, 2015
- Employees
- 69
- Market Cap
- $506M
About CytomX Therapeutics, Inc.
CytomX Therapeutics Inc a clinical-stage, oncology-focused biopharmaceutical company developing novel, masked, conditionally activated biologics designed to be localized to the tumor microenvironment. It is engaged in developing antibody therapeutics based on probody technology platforms. The company's probody technology platform creates proprietary cancer immunotherapies against clinically-validated targets and develops cancer therapeutics. Probody therapeutics are designed to take advantage of conditions in the tumor microenvironment to enhance the tumor-targeting features of an antibody and reduce drug activity in healthy tissues.
Institutional ownership
In 13F filings for the quarter ended June 30, 2026, 169 institutions reported holding CTMX, with 212.5 million shares worth $797.1 million in aggregate. The largest reported holder was FMR, with 32.7 million shares worth $122.7 million. Of the 5 largest holders listed below, all 5 added shares during the quarter.
| Institution | Shares | Value | Quarter change |
|---|---|---|---|
| FMR | 32,714,937 | $123M | Added 2.38% |
| Kynam Capital Management | 21,703,093 | $81M | Added 44.56% |
| BlackRock | 17,559,822 | $66M | Added 235.86% |
| Bank of America | 15,082,617 | $57M | Added 47.83% |
| Vanguard | 11,801,708 | $44M | Added 8.38% |
Form 13F is a quarterly report that institutional investment managers with at least $100 million in qualifying securities file with the SEC. It lists long positions as of the last day of the quarter and is due within 45 days of quarter end, so these holdings describe that date rather than today.
Frequently asked questions
What is CTMX?
CytomX Therapeutics, Inc. (CTMX) is listed on Nasdaq, where it has traded since October 8, 2015.
Who are the largest institutional holders of CTMX?
In 13F filings for the quarter ended June 30, 2026, the largest reported holders of CTMX were FMR, Kynam Capital Management and BlackRock.
How many institutions own CTMX?
169 institutions reported a position in CTMX for the quarter ended June 30, 2026, worth $797.1 million in total.
Did institutions buy or sell CTMX last quarter?
Of the 5 largest reported holders, all 5 added shares during the quarter. Every reported holder and its change is on the SentiSense ownership page for CTMX.
Every reported institutional holder, plus insider and congressional trades in CTMX, on SentiSense.