FMR LLC

Position in CTMX — CytomX Therapeutics, Inc.

CIK 315066 BOSTON, MA

Back to CTMX Full portfolio

Position in CTMX

as of Jun 30, 2026 · filed Aug 13, 2026 Compact

Position Value

$122,681,012

-$27,510,481 QoQ

Shares Held

32,714,937

+2.4% QoQ

Ownership

15.0%

of shares outstanding

% of Portfolio

0.01%

of 13F equity value

Holder Rank

of 178 holders

Holding Since

Mar 2020

26 quarters on record

Voting authority Sole 100% Shared 0% None 0%

Common Shares in CTMX Over Time

Shares Held

Position Value (USD)

Position in Biotechnology

Healthcare · as of Jun 30, 2026

FMR LLC holds $61,424,667,384 across 370 Biotechnology names. CTMX ranks #86 (0.2% of the industry book) .

#	Ticker	Company	Shares	Value (USD)
1	ARGX	Argenx SE	5,231,452	$4,853,584,218
2	ALNY	Alnylam Pharmaceuticals, Inc.	15,023,962	$4,522,663,276
3	MRNA	Moderna, Inc.	51,859,891	$3,631,748,165
4	ROIV	Roivant Sciences Ltd.	81,020,390	$2,867,311,601
5	RVMD	Revolution Medicines, Inc.	12,200,422	$2,284,895,029
6	IONS	Ionis Pharmaceuticals Inc	24,631,956	$1,953,067,789
7	INSM	INSMED Inc	16,143,583	$1,721,228,815
8	KRYS	Krystal Biotech, Inc.	4,418,197	$1,642,111,277

All Filings in CTMX

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26 filing rows on record

Report Date	Value (USD)	Shares	Change	Type	Discretion	Filed
2026-06-30	$122,681,012	32,714,937	+2.4%	Shares	Defined	2026-08-13
2026-03-31	$150,191,493	31,955,637	+29.4%	Shares	Defined	2026-05-15
2025-12-31	$105,171,343	24,688,109	+60.4%	Shares	Defined	2026-02-17
2025-09-30	$49,113,876	15,396,200	+66.6%	Shares	Defined	2025-11-13
2025-06-30	$20,972,230	9,238,868	+8429.9%	Shares	Defined	2025-08-14
2025-03-31	$68,885	108,311	-64.7%	Shares	Defined	2025-05-12
2024-12-31	$315,986	306,783	+7.9%	Shares	Defined	2025-02-13
2024-09-30	$335,482	284,307	+17.3%	Shares	Defined	2024-11-13
2024-06-30	$295,676	242,358	+32.4%	Shares	Defined	2024-08-13
2024-03-31	$399,107	183,077	-67.6%	Shares	Defined	2024-05-13
2023-12-31	$876,251	565,324	-20.1%	Shares	Defined	2024-02-13
2023-09-30	$913,277	707,968	-2.7%	Shares	Defined	2023-11-13
2023-06-30	$1,251,092	727,380	+3.1%	Shares	Defined	2023-08-11
2023-03-31	$1,065,600	705,697	-1.5%	Shares	Defined	2023-08-11
2022-12-31	$1,146,631	716,646	+2.1%	Shares	Defined	2023-02-13
2022-09-30	$1,017,277	701,572	-0.2%	Shares	Defined	2022-11-10
2022-06-30	$1,286,870	703,209	+0.2%	Shares	Defined	2022-08-12
2022-03-31	$1,873,850	701,817	+30.8%	Shares	Defined	2022-05-13
2021-12-31	$2,322,761	536,435	-48.7%	Shares	Defined	2022-02-14
2021-09-30	$5,322,204	1,045,620	0.0%	Shares	Defined	2022-02-14
2021-06-30	$6,618,773	1,045,620	+0.0%	Shares	Defined	2021-08-13
2021-03-31	$8,082,541	1,045,607	0.0%	Shares	Defined	2021-05-14
2020-12-31	$6,848,725	1,045,607	+26.8%	Shares	Defined	2021-02-08
2020-09-30	$5,485,630	824,907	-0.5%	Shares	Defined	2020-11-13
2020-06-30	$6,905,344	828,973	+0.0%	Shares	Defined	2020-08-24
2020-03-31	$6,355,461	828,613	—	Shares	Defined	2020-05-14
No filing history on record for this holder in this stock.