CytomX Therapeutics Ownership | Who Owns CytomX Therapeutics?
CytomX Therapeutics Ownership Summary
CytomX Therapeutics is owned by 16.90% institutional investors, 0.59% insiders, and 82.51% retail investors. Fmr is the largest institutional shareholder, holding 18.78% of CTMX shares. Vanguard US Total Market Shares ETF is the top mutual fund, with 3.07% of its assets in CytomX Therapeutics shares.
CTMX Ownership Benchmark
| Type | Name | % Inst | % Insiders | % Retail |
|---|---|---|---|---|
| Stock | CytomX Therapeutics | 16.90% | 0.59% | 82.51% |
| Sector | Healthcare Stocks | 35.58% | 11.87% | 52.55% |
| Industry | Biotech Stocks | 35.75% | 11.83% | 52.41% |
Institutional Shareholders
Top Institutional Shareholders by Total Shares
| Holder | Shares | % Holding | Value |
|---|---|---|---|
| Fmr | 31.96M | 18.78% | $150.19M |
| Kynam capital management, lp | 15.01M | 8.82% | $70.56M |
| Tang capital management | 11.07M | 8.57% | $35.30M |
| Perceptive advisors | 10.10M | 5.93% | $47.46M |
| Vr adviser | 9.98M | 5.87% | $46.92M |
| Vanguard group | 8.48M | 5.14% | $36.11M |
| Point72 asset management | 7.88M | 4.63% | $37.01M |
| State street | 5.66M | 3.33% | $26.62M |
| Citadel advisors | 5.41M | 3.18% | $25.41M |
| Adar1 capital management | 4.05M | 3.13% | $12.90M |
Top Institutional Shareholders by % of Total Assets
| Holder | Shares | % Assets | Value |
|---|---|---|---|
| Kynam capital management, lp | 15.01M | 4.35% | $70.56M |
| Vr adviser | 9.98M | 1.75% | $46.92M |
| Velan capital investment management lp | 540.00K | 1.59% | $2.54M |
| Nextech invest | 4.45M | 1.47% | $20.91M |
| Tang capital management | 11.07M | 1.36% | $35.30M |
| Exome asset management | 521.47K | 1.27% | $2.45M |
| Adar1 capital management | 4.05M | 1.21% | $12.90M |
| Perceptive advisors | 10.10M | 0.93% | $47.46M |
| Schulhoff | 477.55K | 0.92% | $2.24M |
| Patient square capital lp | 1.09M | 0.91% | $5.10M |
Top Buyers
| Holder | Shares | % Assets | Change |
|---|---|---|---|
| Fmr | 31.96M | 0.01% | 7.27M |
| Kynam capital management, lp | 15.01M | 4.35% | 6.05M |
| Citadel advisors | 5.41M | 0.00% | 5.06M |
| Nextech invest | 4.45M | 1.47% | 4.45M |
| Wellington management group llp | 3.58M | 0.00% | 3.58M |
Top Sellers
| Holder | Shares | % Assets | Change |
|---|---|---|---|
| Commodore capital lp | - | - | -7.69M |
| Franklin resources | - | - | -5.77M |
| Vr adviser | 9.98M | 1.75% | -5.58M |
| Bvf inc/il | - | - | -5.23M |
| Fairmount funds management | - | - | -3.90M |
New Positions
| Holder | Shares | % Assets | Change | Value |
|---|---|---|---|---|
| Nextech invest | 4.45M | 1.47% | 4.45M | $20.91M |
| Wellington management group llp | 3.58M | 0.00% | 3.58M | $16.84M |
| Siren | 3.46M | 0.45% | 3.46M | $16.25M |
| Gilder gagnon howe | 1.12M | 0.06% | 1.12M | $5.27M |
| Vanguard fiduciary trust | 1.10M | 0.00% | 1.10M | $5.18M |
Sold Out
| Holder | Change |
|---|---|
| Innealta capital | -2.00 |
| Old point trust & financial services n a | -250.00 |
| Raleigh capital management | -250.00 |
| Bell investment advisors | -388.00 |
| Federated hermes | -398.00 |
Institutional Ownership Trends
| Date | Holdings | Change % | Shares | Change % | Ownership | Change % | Increased Position | Change % | Decreased Position | Change % |
|---|---|---|---|---|---|---|---|---|---|---|
| Mar 31, 2026 | 60 | -53.85% | 23,309,564 | -83.82% | 16 | 0.22% | 40 | -48.05% | 11 | -59.26% |
| Dec 31, 2025 | 70 | -37.50% | 44,567,168 | -67.59% | 27 | 0.39% | 42 | -32.26% | 16 | -38.46% |
| Sep 30, 2025 | 36 | -59.09% | 16,872,803 | -87.34% | 13 | 0.12% | 20 | -64.91% | 7 | -58.82% |
| Jun 30, 2025 | 88 | 35.38% | 133,304,249 | 195.10% | 153 | 5.69% | 57 | 128.00% | 16 | -36.00% |
| Mar 31, 2025 | 66 | -7.04% | 45,273,213 | -3.09% | 51 | 1.72% | 26 | -25.71% | 25 | 19.05% |
Top Mutual Funds Shareholders
| Holder | Shares | % Holding | Change |
|---|---|---|---|
| Vanguard US Total Market Shares ETF | 2.46M | 3.07% | - |
| Vanguard Total Stock Mkt Idx Inv | 6.53M | 3.00% | - |
| State Street® SPDR® S&P® Biotech ETF | 5.03M | 2.33% | -49.67K |
| Fidelity Select Health Care | 5.00M | 2.31% | 1.60M |
| Franklin Biotechnology Discv A(acc)USD | 2.92M | 1.77% | -800.28K |
| Fidelity Small Cap Growth | 3.28M | 1.52% | - |
| Fidelity Select Biotechnology | 3.10M | 1.44% | 1.88M |
| Fidelity Advisor Health Care I | 2.50M | 1.16% | 750.00K |
| FIAM Small Cap Core CIT Cl B | 2.49M | 1.15% | - |
| FIAM Small Cap Core Composite | 2.49M | 1.15% | 1.40M |
Recent Insider Transactions
| Date | Name | Role | Activity | Value |
|---|---|---|---|---|
| Mar 17, 2026 | Chu Yu-Waye | Chief Medical Officer | Sell | $136.68K |
| Mar 17, 2026 | McCarthy Sean A. | CEO | Sell | $764.14K |
| Mar 17, 2026 | BELVIN MARCIA | SVP, Chief Scientific Officer | Sell | $202.27K |
| Mar 17, 2026 | Ogden Christopher | Chief Financial Officer | Sell | $124.11K |
| Nov 06, 2025 | McCarthy Sean A. | CEO | Sell | $461.91K |
Insider Transactions Trends
| Date | Buy | Sell |
|---|---|---|
| 2026 Q1 | - | 4 |
| 2025 Q4 | - | 1 |
| 2025 Q3 | - | - |
| 2025 Q2 | - | 4 |
| 2025 Q1 | - | 5 |
CTMX Ownership FAQ
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