CytomX Therapeutics, Inc. (CTMX) Institutional Ownership

Institutions by Trading Activity

68,336,585Shares Outstanding

0Shares held by institutions

$0Value of institutional holdings

0.95%Institutional ownership %

-11.53%Shares Changed QoQ

2No. of institutional investors

Recent 13F filings as of December 2025 show that 2 institutional investors hold a position in CytomX Therapeutics, Inc. (NASDAQ:CTMX).

The percentage of CytomX Therapeutics owned by institutions changed from 201.6% in September 2025 to 0.9% in December 2025, marking a slight down trend.
Institutional share ownership changed by -11.53% QoQ, while the number of institutional owners saw a decrease of 97.10% YoY.
A review of institutional activity for CytomX Therapeutics shows 1 of 2 filers increasing their positions, while 1 reduced their stake, and 0 remained unchanged.
The aggregate institutional position in CytomX Therapeutics now stands at 645.80K shares as of December 2025, after investors decreased their holdings (down by 84.16K shares quarter on quarter which is down 50.18Mn shares year over year).
As of December 31, 2025, Assenagon Asset Management S.A. held CytomX Therapeutics's largest shareholding position with over 592.70K shares, representing 0.87% of total outstanding shares.
Among the most significant buyers of CytomX Therapeutics during December 2025 were SG Americas Securities, LLC (53.11K).
Leading sellers of CytomX Therapeutics stock in December 2025 included Assenagon Asset Management S.A. (137.27K).
The top 2 institutional holders of CytomX Therapeutics for the quarter ending December 2025 included Assenagon Asset Management S.A. (592.70K), SG Americas Securities, LLC (53.11K).

0 Total Shares Held

Rows:

Owner Name	Date	Shares Held	Change (QoQ)	Change (%)	Value (USD)
VR Adviser, LLC	30 Sep, 2025	15,561,500	1,591,618	11.39%	$49,641,185.00
FMR LLC	30 Sep, 2025	15,396,200	6,157,332	66.65%	$49,113,878.00
TANG CAPITAL MANAGEMENT LLC	30 Sep, 2025	11,065,662	0	0.00%	$35,299,462.00
PERCEPTIVE ADVISORS LLC	30 Sep, 2025	9,680,185	2,686,539	38.41%	$30,879,790.00
VANGUARD GROUP INC	30 Sep, 2025	8,947,807	-431,987	-4.61%	$28,543,505.00
ORBIMED ADVISORS LLC	30 Sep, 2025	8,461,500	0	0.00%	$26,992,185.00
Commodore Capital LP	30 Sep, 2025	7,692,300	0	0.00%	$24,538,437.00
BAKER BROS. ADVISORS LP	30 Sep, 2025	4,250,826	766,600	22.00%	$13,560,135.00
Point72 Asset Management, L.P.	30 Sep, 2025	4,068,575	-4,016,048	-49.68%	$12,978,754.00
ADAR1 Capital Management, LLC	30 Sep, 2025	4,045,414	964,000	31.28%	$12,904,871.00
BALYASNY ASSET MANAGEMENT L.P.	30 Sep, 2025	3,913,081	1,047,456	36.55%	$12,482,728.00
Kynam Capital Management, LP	30 Sep, 2025	3,646,503	1,492,090	69.26%	$11,632,345.00
RTW INVESTMENTS, LP	30 Sep, 2025	3,461,500	0	0.00%	$11,042,185.00
Ikarian Capital, LLC	30 Sep, 2025	3,372,616	3,372,616	0.00%	$10,758,645.00
Vivo Capital, LLC	30 Sep, 2025	2,884,615	-2,884,615	-50.00%	$9,201,922.00
RA CAPITAL MANAGEMENT, L.P.	30 Sep, 2025	2,661,331	0	0.00%	$8,489,646.00
RENAISSANCE TECHNOLOGIES LLC	30 Sep, 2025	2,545,260	683,060	36.68%	$8,119,379.00
BlackRock, Inc.	30 Sep, 2025	2,381,912	-6,541	-0.27%	$7,598,299.00
Woodline Partners LP	30 Sep, 2025	2,337,005	106	0.00%	$7,455,046.00
CITADEL ADVISORS LLC	30 Sep, 2025	1,800,435	1,800,435	0.00%	$5,743,387.00

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