CTMX — CYTOMX THERAPEUTICS INC.
As of Q2 2026, 27 SEC-registered investment managers reported holding CTMX (CYTOMX THERAPEUTICS INC.) in their latest 13F filings, with a combined reported value of $395.96M across 105.74M shares. That is +24.2% by share count (+20.62M shares) versus the previous quarter, while reported value moved -1.0%. Ownership is concentrated: the five largest holders account for 74.2% of reported value and the top ten for 91.8%.
Compared with the prior quarter, 5 opened new positions, 16 added to existing stakes, 6 trimmed, 2 exited entirely. 13F holdings are quarter-end snapshots, so these moves reflect positioning as of Q2 2026, not real-time trading.
CTMX is classified in the Health Care sector.
All figures on this page are computed from SEC Form 13F quarterly filings. 13F filers disclose long positions of $100,000 or more within 45 days of quarter end; short positions, options overlays and intra-quarter trades are not included, so treat the numbers as a quarterly snapshot of institutional ownership rather than real-time positioning.
| Fund | Quarter | Shares | Value | Portfolio Weight | Change |
|---|---|---|---|---|---|
| Fidelity Management & Research (FMR) history | Q2 2026 | 32.71M | $122.68M | 0.01% | Add |
| BlackRock Inc history | Q2 2026 | 17.56M | $65.85M | 0.00% | Add |
| Bank of America Corp history | Q2 2026 | 15.08M | $56.56M | 0.00% | Add |
| Vanguard Group history | Q4 2025 | 8.48M | $36.11M | 0.00% | Reduce |
| Point72 Asset Management history | Q2 2026 | 7.81M | $29.29M | 0.03% | Reduce |
| Wellington Management Group history | Q2 2026 | 5.17M | $19.38M | 0.00% | Add |
| Geode Capital Management history | Q2 2026 | 4.68M | $17.55M | 0.00% | Add |
| Two Sigma Investments history | Q2 2026 | 4.13M | $15.50M | 0.01% | Add |
| Franklin Resources history | Q2 2025 | 5.77M | $13.10M | 0.00% | New |
| UBS Group AG history | Q2 2026 | 3.47M | $13.01M | 0.00% | Add |
| Citadel Advisors history | Q2 2026 | 3.33M | $12.49M | 0.00% | Reduce |
| Marshall Wace history | Q2 2026 | 3.02M | $11.34M | 0.01% | Reduce |
| Renaissance Technologies history | Q3 2025 | 2.55M | $8.12M | 0.01% | Add |
| Goldman Sachs Group history | Q2 2026 | 2.00M | $7.51M | 0.00% | Add |
| Millennium Management history | Q2 2026 | 1.69M | $6.32M | 0.00% | Reduce |
| Northern Trust Corp history | Q2 2026 | 1.68M | $6.28M | 0.00% | Add |
| Balyasny Asset Management history | Q1 2026 | 730.84K | $3.43M | 0.01% | Reduce |
| BNY Mellon history | Q2 2026 | 684.54K | $2.57M | 0.00% | Add |
| Deutsche Bank AG history | Q2 2026 | 663.04K | $2.49M | 0.00% | Add |
| Charles Schwab Investment Management history | Q2 2026 | 549.88K | $2.06M | 0.00% | Add |
New Positions (Q2 2026)
- JPMorgan Chase & Co 109.41K sh · $409.20K
- Manulife Financial 47.80K sh · $179.23K
- AQR Capital Management 42.01K sh · $157.55K
- Prudential Financial 27.95K sh · $104.81K
- T. Rowe Price Associates 148.11K sh · $556
Fully Exited (vs previous quarter)
- Balyasny Asset Management sold 730.84K sh · $3.43M
- Janus Henderson Group sold 46.70K sh · $219.72K
Fund Position History — shares by quarter (top 20 funds)
| Fund | Q3 2021 | Q4 2021 | Q1 2022 | Q2 2022 | Q3 2022 | Q4 2022 | Q1 2023 | Q2 2023 | Q3 2023 | Q4 2023 | Q1 2024 | Q2 2024 | Q3 2024 | Q4 2024 | Q1 2025 | Q2 2025 | Q3 2025 | Q4 2025 | Q1 2026 | Q2 2026 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Fidelity Management & Research (FMR) | 1.05M | 536.43K | 701.82K | 703.21K | 701.57K | 716.65K | 705.70K | 727.38K | 707.97K | 565.32K | 183.08K | 242.36K | 284.31K | 306.78K | 108.31K | 9.24M | 15.40M | 24.69M | 31.96M | 32.71M |
| BlackRock Inc | — | — | — | — | — | — | — | — | — | — | — | — | 1.17M | 1.24M | 1.17M | 2.39M | 2.38M | 3.67M | 5.23M | 17.56M |
| Bank of America Corp | 31.65K | 51.11K | 14.71K | 18.25K | 13.09K | 42.01K | 40.03K | 31.26K | 25.57K | 17.78K | 77.81K | 5.74K | 20.56K | 2.02K | 463.85K | 4.77K | 1.01M | 876.30K | 10.20M | 15.08M |
| Point72 Asset Management | 6.30M | 6.30M | 4.37M | 2.75M | — | — | — | — | — | — | — | — | — | 2.65M | 2.65M | 8.08M | 4.07M | 5.19M | 7.88M | 7.81M |
| Wellington Management Group | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 3.58M | 5.17M |
| Geode Capital Management | 1.12M | 1.17M | 1.05M | 583.07K | 587.45K | 603.08K | 642.31K | 644.09K | 676.34K | 702.65K | 753.40K | 769.50K | 803.53K | 815.64K | 857.96K | 1.75M | 1.57M | 1.53M | 2.07M | 4.68M |
| Two Sigma Investments | 101.85K | 184.97K | 491.78K | 297.88K | 357.96K | 740.72K | 467.62K | 138.45K | 50.09K | 14.14K | 253.77K | 661.95K | 471.47K | 320.77K | 116.47K | 157.68K | 729.70K | 1.56M | 2.71M | 4.13M |
| UBS Group AG | 157.17K | 140.48K | 1.71K | 4.21K | 17.79K | 45.80K | 26.79K | 21.44K | 18.70K | 20.05K | 20.49K | 70.37K | 69.14K | 508.56K | 746.79K | 408.04K | 30.17K | 370.74K | 3.12M | 3.47M |
| Citadel Advisors | 10.30K | 116.07K | 42.38K | 350.69K | 64.46K | 480.32K | 300.88K | 54.55K | 98.07K | 275.98K | 50.18K | 507.74K | 328.42K | 330.71K | 56.90K | 341.31K | 1.98M | 472.80K | 5.90M | 3.33M |
| Marshall Wace | — | — | 15.27K | 64.14K | 40.02K | — | 729.94K | 674.50K | 377.59K | 363.28K | 52.29K | — | — | — | 85.54K | 2.35M | 1.10M | 1.16M | 4.14M | 3.02M |
| Goldman Sachs Group | 1.11M | 636.95K | 758.59K | 187.54K | 133.69K | 103.92K | 13.40K | 10.22K | — | — | 293.89K | 109.30K | 12.00K | — | 61.72K | 14.68K | 447.75K | 2.46M | 1.46M | 2.00M |
| Millennium Management | 936.85K | 1.27M | 2.25M | 1.44M | 532.51K | 1.72M | 961.04K | 649.30K | 698.91K | 794.05K | 671.63K | 1.85M | 2.56M | 3.22M | 2.83M | 233.34K | 1.39M | 289.65K | 3.66M | 1.69M |
| Northern Trust Corp | 654.69K | 615.32K | 573.43K | 112.48K | 112.43K | 112.43K | 120.00K | 119.61K | 119.92K | 135.30K | 134.12K | 131.03K | 129.89K | 150.63K | 150.63K | 450.11K | 389.69K | 415.18K | 612.14K | 1.68M |
| BNY Mellon | 210.09K | 213.09K | 212.29K | 36.19K | 36.19K | 36.15K | 36.15K | 31.87K | 266.84K | 266.84K | 241.98K | 241.98K | 241.98K | 241.98K | 241.98K | 252.66K | 252.66K | 328.25K | 289.87K | 684.54K |
| Deutsche Bank AG | 39.85K | 42.32K | 38.15K | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 463.42K | 663.04K |
| Charles Schwab Investment Management | 164.26K | 164.01K | 167.18K | — | 42.22K | 42.22K | 24.82K | 24.82K | 24.82K | 24.82K | 24.82K | 24.82K | 24.82K | 24.82K | 24.88K | 88.57K | 88.57K | 68.69K | 128.80K | 549.88K |
| Citigroup Inc | 109.47K | 130.77K | 4.33K | 1.68K | 795 | — | — | — | — | — | 123.65K | — | — | — | — | — | 7.76K | 96.33K | 101.80K | 287.87K |
| Invesco Ltd | 30.18K | 22.90K | 23.63K | — | — | 13.46K | 13.06K | 19.46K | 22.07K | — | — | 23.09K | 37.46K | — | — | 14.17K | 22.43K | 21.98K | 61.55K | 220.21K |
| Morgan Stanley | 118.23K | 87.24K | 77.65K | 161.42K | 15.05K | 17.95K | 151.38K | 84.28K | 63.66K | 78.92K | 855.98K | 188.49K | 50.37K | 13.20K | 60.58K | 339.21K | 319.29K | 401.19K | 520.50K | 190.80K |
| Wells Fargo & Co | 90.57K | 104.62K | 85.23K | 407 | 438 | 450 | 457 | 478 | 487 | 515 | 524 | — | — | — | — | — | 3.60K | 6.61K | 6.59K | 163.18K |
▲ Bought Low (fund opened/added, stock rose ≥5% next quarter) ▼ Sold High (fund reduced, stock fell ≥5% next quarter)
Drag / scroll to zoom · Default shows the most recent year · Annotations come from quarterly fund actions in 13F filings · Hover a marker for details