# CYTOMX THERAPEUTICS INC (CTMX)

> Institutional ownership reported to the SEC as of Q3 2026, from Form 13F filings. Source: https://holderbook.com/stocks/CTMX/

- Reporting holders: 3
- Reported value: $18.5K
- Held through calls: 0.0%
- Held through puts: 0.0%

A 13F reports long US equity positions only. Shorts, bonds, foreign listings and cash are not visible here, and positions are disclosed up to 45 days after the quarter ends.

## Largest holders

| Manager | Value | Shares | Share of their book | Quarters held |
|---|---|---|---|---|
| [Investors Research Corp](https://holderbook.com/funds/1730630-investors-research-corp/) | $8.5K | 3,134 | 0.0% | 1 |
| [Farther Finance Advisors, LLC](https://holderbook.com/funds/1992825-farther-finance-advisors-llc/) | $7.8K | 2,865 | 0.0% | 5 |
| [GAMMA Investing LLC](https://holderbook.com/funds/2010235-gamma-investing-llc/) | $2.2K | 806 | 0.0% | 1 |

## Quarter by quarter

| Quarter | Holders | Reported value |
|---|---|---|
| Q3 2026 | 3 | $18.5K |
| Q2 2026 | 182 | $867.2M |
| Q1 2026 | 181 | $936.9M |
| Q4 2025 | 124 | $620.4M |
| Q3 2025 | 106 | $446.3M |
| Q2 2025 | 86 | $305.6M |
| Q1 2025 | 65 | $28.9M |
| Q4 2024 | 70 | $48.2M |
| Q3 2024 | 71 | $60.6M |
| Q2 2024 | 73 | $61.9M |
| Q1 2024 | 87 | $101.2M |
| Q4 2023 | 68 | $50.8M |