CytomX Therapeutics, Inc. 13F holders
178 funds reported a position in CytomX Therapeutics, Inc. in their 13F for the quarter ended 30 June 2026, together 213.4 million shares worth $800.4 million. Against the quarter before, 44 opened a position, 71 added, 33 trimmed and 45 sold out; together they bought a net 19.2 million shares. The largest holders: FMR LLC, Kynam Capital Management, LP and BlackRock, Inc.
Funds holding178-1 on Q1 2026
Shares they held213.4Mworth $800.4 million
Net bought on the quarter19.2M sharesabout $72.0 million at the funds' values
Funds buying to selling115 to 78opened or added, to cut or sold
Opened 44Added 71Held 28Trimmed 33Sold out 45
What each fund did in CTMX against its 13F for the quarter before; a change under 0.1% of a holding counts as held
Funds reporting a position in CTMX in their 13F, each quarter; hover a bar for the shares they held
Filed so far for the quarter to 30 September 2026
3,241 funds have filed their 13F for the quarter so far; the rest are due by 16 November 2026. Of those, 27 reported a position in CytomX Therapeutics, Inc.: 7 opened one, 11 added, 5 trimmed and 1 sold out, a net 1.1 million shares bought.
The largest moves in the name among the funds that have filed, against each fund's previous 13F.
The well-known funds
Of the 44 funds followed here, 6 reported a position in CytomX Therapeutics, Inc. in a 13F for the quarter ended 30 June 2026. The largest: FMR LLC, 32.7 million shares worth $122.7 million, 0.0% of its reported book. In the quarter, 3 funds added or opened a position and 3 trimmed or sold out; together they bought a net 459,490 shares, about $1.7 million at the funds' own value per share on 30 June 2026. A change under 0.1% of a holding counts as held.
| Fund | Shares | Value | Of its book | Change on the quarter | Status | Quarter ended | Filing |
|---|---|---|---|---|---|---|---|
| FMR LLC | 32,714,937 | $122.7 million | 0.0% | +759,300 | added | 30 June 2026 | 13F |
| Point72 Asset Management | 7,811,033 | $29.3 million | 0.0% | -64,357 | trimmed | 30 June 2026 | 13F |
| Geode Capital Management | 4,678,716 | $17.5 million | 0.0% | +2,612,104 | added | 30 June 2026 | 13F |
| Two Sigma Investments | 4,132,643 | $15.5 million | 0.0% | +1,422,487 | added | 30 June 2026 | 13F |
| Citadel Advisors | 3,110,509 | $11.7 million | 0.0% | -2,295,684 | trimmed | 30 June 2026 | 13F |
| Millennium Management | 1,685,830 | $6.3 million | 0.0% | -1,974,360 | trimmed | 30 June 2026 | 13F |
Value is what the fund reported.
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Change is shares against the fund's previous 13F; a fund with one filing read shows no change. 13Fs cover long US positions of managers above $100 million and are filed up to 45 days after the quarter.The largest holders
| Fund | Shares | Share of all | Value | Of its book | Change in shares | Filing |
|---|---|---|---|---|---|---|
| FMR LLC | 32,714,937 | 15.33% | $122.7 million | 0.01% | +759,300 | 13F |
| Kynam Capital Management, LP | 21,703,093 | 10.17% | $81.4 million | 4.50% | +6,690,000 | 13F |
| BlackRock, Inc. | 17,559,822 | 8.23% | $65.8 million | 0.00% | +12,331,542 | 13F |
| Bank of America Corp. | 15,082,617 | 7.07% | $56.6 million | 0.00% | +4,879,832 | 13F |
| State Street Corp. | 11,747,236 | 5.50% | $44.1 million | 0.00% | +6,083,828 | 13F |
| Perceptive Advisors LLC | 10,439,185 | 4.89% | $39.1 million | 0.61% | +340,361 | 13F |
| Vanguard Capital Management LLC | 8,525,457 | 4.00% | $32.0 million | 0.00% | -207,661 | 13F |
| Point72 Asset Management, L.P. | 7,811,033 | 3.66% | $29.3 million | 0.05% | -64,357 | 13F |
| Wellington Management Group LLP | 5,168,961 | 2.42% | $19.4 million | 0.00% | +1,585,976 | 13F |
| Venrock Adviser, LLC | 4,982,124 | 2.33% | $18.7 million | 0.57% | -5,000,000 | 13F |
| Baker Bros. Advisors LP | 4,975,826 | 2.33% | $18.7 million | 0.09% | no change | 13F |
| Geode Capital Management, LLC | 4,678,716 | 2.19% | $17.5 million | 0.00% | +2,612,104 | 13F |
| Elmind Capital, LP | 4,550,000 | 2.13% | $17.1 million | 4.29% | no change | 13F |
| Nextech Invest Ltd. | 4,449,932 | 2.09% | $16.7 million | 0.79% | no change | 13F |
| Two Sigma Investments, LP | 4,132,643 | 1.94% | $15.5 million | 0.01% | +1,422,487 | 13F |
| Eversept Partners, LP | 3,558,497 | 1.67% | $13.3 million | 0.73% | +369,983 | 13F |
| UBS Group AG | 3,468,359 | 1.63% | $13.0 million | 0.00% | +348,204 | 13F |
| Siren, L.L.C. | 3,457,711 | 1.62% | $13.0 million | 0.26% | no change | 13F |
| ADAR1 Capital Management, LLC | 3,365,118 | 1.58% | $12.6 million | 0.60% | -45,072 | 13F |
| Citadel Advisors LLC | 3,110,509 | 1.46% | $11.7 million | 0.01% | -2,295,684 | 13F |
| Marshall Wace, LLP | 3,024,351 | 1.42% | $11.3 million | 0.01% | -1,113,825 | 13F |
| Woodline Partners LP | 2,040,210 | 0.96% | $7.7 million | 0.02% | +39,385 | 13F |
| Goldman Sachs Group Inc. | 2,003,652 | 0.94% | $7.5 million | 0.00% | +543,813 | 13F |
| Dimensional Fund Advisors LP | 1,860,290 | 0.87% | $7.0 million | 0.00% | -70,630 | 13F |
| Qube Research & Technologies Ltd | 1,824,564 | 0.85% | $6.8 million | 0.01% | -425,019 | 13F |
| Vanguard Portfolio Management LLC | 1,751,167 | 0.82% | $6.6 million | 0.00% | +956,412 | 13F |
| Millennium Management LLC | 1,685,830 | 0.79% | $6.3 million | 0.00% | -1,974,360 | 13F |
| Northern Trust Corp. | 1,675,183 | 0.78% | $6.3 million | 0.00% | +1,063,042 | 13F |
| Tudor Investment Corp. Et Al | 1,380,687 | 0.65% | $5.2 million | 0.02% | new | 13F |
| Vanguard Fiduciary Trust Co. | 1,267,430 | 0.59% | $4.8 million | 0.00% | +164,547 | 13F |
| Seven Fleet Capital Management LP | 1,085,398 | 0.51% | $4.1 million | 0.67% | +714,000 | 13F |
| Sphera Funds Management Ltd | 879,000 | 0.41% | $3.3 million | 0.47% | +659,000 | 13F |
| Ally Bridge Group (NY) LLC | 775,000 | 0.36% | $2.9 million | 3.75% | -125,000 | 13F |
| Assenagon Asset Management S.A. | 728,346 | 0.34% | $2.7 million | 0.00% | 13F | |
| DV Equities, LLC | 714,000 | 0.33% | $2.7 million | 0.39% | first 13F | 13F |
| Gilder Gagnon Howe & Co. LLC | 704,423 | 0.33% | $2.6 million | 0.03% | -415,886 | 13F |
| Bank of New York Mellon Corp | 684,539 | 0.32% | $2.6 million | 0.00% | +394,671 | 13F |
| Deutsche Bank AG | 663,038 | 0.31% | $2.5 million | 0.00% | +199,617 | 13F |
| First Trust Advisors LP | 599,696 | 0.28% | $2.2 million | 0.00% | +31,134 | 13F |
| Charles Schwab Investment Management Inc. | 549,875 | 0.26% | $2.1 million | 0.00% | +421,079 | 13F |
| Ensign Peak Advisors, Inc | 505,055 | 0.24% | $1.9 million | 0.00% | -87,418 | 13F |
| Raymond James Financial Inc. | 484,222 | 0.23% | $1.8 million | 0.00% | +104,062 | 13F |
| Schulhoff & Co. Inc. | 477,550 | 0.22% | $1.8 million | 0.72% | no change | 13F |
| Exome Asset Management LLC | 460,067 | 0.22% | $1.7 million | 1.06% | -61,401 | 13F |
| Nuveen, LLC | 448,041 | 0.21% | $1.7 million | 0.00% | new | 13F |
| Dafna Capital Management LLC | 438,407 | 0.21% | $1.6 million | 0.31% | +208,407 | 13F |
| Jump Financial, LLC | 347,400 | 0.16% | $1.3 million | 0.01% | +336,676 | 13F |
| Swiss National Bank | 325,400 | 0.15% | $1.2 million | 0.00% | +5,800 | 13F |
| Caption Management, LLC | 300,000 | 0.14% | $1.1 million | 0.04% | -273,224 | 13F |
| Citigroup Inc. | 287,866 | 0.13% | $1.1 million | 0.00% | +186,065 | 13F |
The 50 largest of the 178 funds that reported a position in CTMX in their 13F for the quarter ended 30 June 2026, by the value each reported.
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Share of all is the fund's part of all the shares the funds reported. Change is shares against the fund's 13F for the quarter before. A 13F lists a manager's long positions in US-listed shares at the quarter's end. What is a 13F?Options the funds reported on CTMX
| Fund | Option | Shares under the options | Value of those shares | Quarter ended | Filing |
|---|---|---|---|---|---|
| Citadel Advisors | Calls | 131,000 | $491,250 | 30 June 2026 | 13F |
| Citadel Advisors | Puts | 88,600 | $332,250 | 30 June 2026 | 13F |
A 13F lists calls and puts by the shares they cover and what those shares were worth at the quarter's end, not what the options cost.
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They are not counted in the holdings above. A put gains when the stock falls, a call when it rises, and a fund may hold either to hedge.Schedule 13D and 13G filed on the name, last twelve months
| Filed | Schedule | Who | Holding | Of the class | Event date | Rule or purpose | Filing |
|---|---|---|---|---|---|---|---|
| 28 October 2026 | 13G/A | Bank Of America Corp and 1 other | 11.9 million | 5.4% | 30 September 2026 | passive, institutional (13d-1(b)) | EDGAR |
| 14 August 2026 | 13G/A | Kynam Capital Management, LP and 5 others | 0 | 10.0% | 30 June 2026 | passive, institutional (13d-1(b)) | EDGAR |
| 14 August 2026 | 13G/A | Point72 Asset Management, L.P. and 5 others | 7.8 million | 3.6% | 30 June 2026 | passive, under 20% (13d-1(c)) | EDGAR |
| 7 August 2026 | 13G | State Street Corporation and 1 other | 11.7 million | 5.4% | 30 June 2026 | passive, institutional (13d-1(b)) | EDGAR |
| 3 August 2026 | 13G | Bank Of America Corp and 1 other | 15.1 million | 7.0% | 30 June 2026 | passive, institutional (13d-1(b)) | EDGAR |
| 27 July 2026 | 13G | BlackRock, Inc. and 1 other | 16.6 million | 7.6% | 30 June 2026 | passive, institutional (13d-1(b)) | EDGAR |
| 15 May 2026 | 13G/A | Kynam Capital Management, LP and 5 others | 0 | 6.9% | 31 March 2026 | passive, institutional (13d-1(b)) | EDGAR |
| 15 May 2026 | 13G/A | Venrock Healthcare Capital Partners III, L.P. and 13 others | 10.0 million | 4.6% | 31 March 2026 | passive, under 20% (13d-1(c)) | EDGAR |
| 15 May 2026 | 13G/A | Longitude Capital Partners V, LLC and 11 others | 15.3 million | 7.0% | 31 March 2026 | passive, under 20% (13d-1(c)) | EDGAR |
| 15 May 2026 | 13G/A | Perceptive Advisors LLC and 5 others | 10.1 million | 4.6% | 31 March 2026 | passive, under 20% (13d-1(c)) | EDGAR |
| 15 May 2026 | 13G/A | Seven Fleet Master Fund LP and 7 others | 1.1 million | 0.5% | 31 March 2026 | passive, under 20% (13d-1(c)) | EDGAR |
| 16 April 2026 | 13G | Point72 Asset Management, L.P. and 5 others | 10.9 million | 5.0% | 15 April 2026 | passive, under 20% (13d-1(c)) | EDGAR |
| 26 March 2026 | 13G/A | The Vanguard Group and 1 other | 0 | 0.0% | 13 March 2026 | passive, institutional (13d-1(b)) | EDGAR |
| 4 March 2026 | 13G | Kynam Capital Management, LP and 5 others | 9.0 million | 5.3% | 31 December 2025 | passive, institutional (13d-1(b)) | EDGAR |
| 17 February 2026 | 13G/A | Tang Capital Management, LLC and 11 others | 0 | 0.0% | 31 December 2025 | passive, under 20% (13d-1(c)) | EDGAR |
| 17 February 2026 | 13G/A | OrbiMed Advisors LLC and 1 other | 3.5 million | 2.1% | 31 December 2025 | passive, under 20% (13d-1(c)) | EDGAR |
| 5 February 2026 | 13G/A | FMR LLC and 3 others | 24.7 million | 14.6% | 31 December 2025 | passive, institutional (13d-1(b)) | EDGAR |
| 14 November 2025 | 13G/A | Venrock Healthcare Capital Partners III, L.P. and 13 others | 15.6 million | 9.4% | 30 September 2025 | passive, under 20% (13d-1(c)) | EDGAR |
| 14 November 2025 | 13G/A | Seven Fleet Master Fund LP and 7 others | 48,898 | 0.0% | 30 September 2025 | passive, under 20% (13d-1(c)) | EDGAR |
| 14 November 2025 | 13G/A | Point72 Asset Management, L.P. and 5 others | 4.1 million | 2.5% | 30 September 2025 | passive, under 20% (13d-1(c)) | EDGAR |
| 7 November 2025 | 13G/A | FMR LLC and 3 others | 20.5 million | 12.4% | 31 October 2025 | passive, institutional (13d-1(b)) | EDGAR |
| 5 November 2025 | 13G/A | FMR LLC and 3 others | 15.4 million | 9.3% | 30 September 2025 | passive, institutional (13d-1(b)) | EDGAR |
A Schedule 13D is filed by anyone who crosses 5% of a class with intent to influence; a 13G by a passive holder.
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Amendments (/A) report a change, including an exit to zero. Holding and percentage are as the filer stated them on the cover page; the purpose is the filer's own words, cut short. 13D and 13GFails to deliver
| Settlement date | Shares failed | Price | File |
|---|---|---|---|
| 10 September 2026 | 135,965 | $3.54 | SEC |
| 8 September 2026 | 78 | $3.71 | SEC |
| 18 August 2026 | 608 | $3.45 | SEC |
Shares that failed to deliver at settlement, per day, from the SEC's half-month files, which arrive about two weeks after the period.