Celldex Therapeutics, Inc. (CLDX) Institutional Ownership

Institutions by Trading Activity

Ownership Statistics

66,429,586Shares Outstanding

2,828,207Shares held by institutions

$64,879,069Value of institutional holdings

106.92%Institutional ownership %

5.46%Shares Changed QoQ

181No. of institutional investors

Shares Owned by Institutions

Shares Purchased/Sold by Institutions

Ownership Summary

Celldex Therapeutics, Inc. (NASDAQ:CLDX) currently has 181 active institutional owners and shareholders as of today (December 2025), that have filed 13F forms with the Securities Exchange Commission (SEC).

These investors collectively held 106.9% of the company's total shares outstanding in December 2025, up from 106.6% in September 2025.
Institutional share ownership changed by 5.46% QoQ, while the number of institutional owners saw an increase of 2.26% YoY.
The latest 13F cycle for Celldex Therapeutics reveals that of 181 total investors, 80 funds grew their exposure, whereas 59 reduced theirs and 42 made no changes.
This class of investors increased its holdings in Celldex Therapeutics to 71.03Mn shares for the 13F-cycle ending December 2025, up by 3.68Mn shares quarter on quarter, and down 3.41Mn shares year over year.
WELLINGTON MANAGEMENT GROUP LLP continues to be the largest institutional holder of Celldex Therapeutics as of December 31, 2025, with a position of 8.08Mn shares, representing 12.16% of the company's outstanding stock.
Among the most significant buyers of Celldex Therapeutics during December 2025 were WELLINGTON MANAGEMENT GROUP LLP (2.28Mn), BRAIDWELL LP (1.27Mn), Elmind Capital, LP (865.00K), STATE STREET CORP (555.58K), ADAR1 Capital Management, LLC (537.33K).
Leading sellers of Celldex Therapeutics stock in December 2025 included Point72 Asset Management, L.P. (2.14Mn), Commodore Capital LP (463.33K), Polar Capital Holdings Plc (292.27K), CITADEL ADVISORS LLC (264.23K), Pictet Asset Management Holding SA (243.37K).
The top 10 institutional holders of Celldex Therapeutics for the quarter ending December 2025 included WELLINGTON MANAGEMENT GROUP LLP (8.08Mn), Kynam Capital Management, LP (5.94Mn), BlackRock, Inc. (5.45Mn), FMR LLC (4.91Mn), VANGUARD GROUP INC (4.03Mn), Bellevue Group AG (3.62Mn), STATE STREET CORP (3.40Mn), Commodore Capital LP (2.56Mn), Deep Track Capital, LP (1.90Mn), BRAIDWELL LP (1.86Mn).

181 Institutional Holders

2,828,207 Total Shares Held

Rows:

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Owner Name	Date	Shares Held	Change (QoQ)	Change (%)	Value (USD)
WELLINGTON MANAGEMENT GROUP LLP	31 Dec, 2025	8,079,608	2,279,605	39.30%	$219,442,154.00
Kynam Capital Management, LP	31 Dec, 2025	5,943,180	-157,549	-2.58%	$161,416,769.00
BlackRock, Inc.	31 Dec, 2025	5,451,815	-54,173	-0.98%	$148,071,294.00
FMR LLC	31 Dec, 2025	4,907,469	-54,619	-1.10%	$133,286,863.00
VANGUARD GROUP INC	31 Dec, 2025	4,027,407	72,817	1.84%	$109,384,374.00
Bellevue Group AG	31 Dec, 2025	3,617,669	60,000	1.69%	$98,255,890.00
STATE STREET CORP	31 Dec, 2025	3,397,713	555,579	19.55%	$92,281,885.00
Commodore Capital LP	31 Dec, 2025	2,565,000	-463,335	-15.30%	$69,665,400.00
Deep Track Capital, LP	31 Dec, 2025	1,900,738	-99,262	-4.96%	$51,624,044.00
BRAIDWELL LP	31 Dec, 2025	1,858,109	1,266,420	214.03%	$50,466,240.00
Point72 Asset Management, L.P.	31 Dec, 2025	1,758,357	-2,135,585	-54.84%	$47,756,976.00
EVENTIDE ASSET MANAGEMENT, LLC	31 Dec, 2025	1,642,559	-216,536	-11.65%	$44,607,415.00
GEODE CAPITAL MANAGEMENT, LLC	31 Dec, 2025	1,627,529	-19,607	-1.19%	$44,211,330.00
Eversept Partners, LP	31 Dec, 2025	1,434,725	280,805	24.33%	$38,967,131.00
MILLENNIUM MANAGEMENT LLC	31 Dec, 2025	1,212,705	237,510	24.36%	$32,937,068.00
Novo Holdings A/S	31 Dec, 2025	1,200,000	0	0.00%	$32,592,000.00
Vestal Point Capital, LP	31 Dec, 2025	1,165,000	-40,000	-3.32%	$31,641,400.00
GOLDMAN SACHS GROUP INC	31 Dec, 2025	1,068,131	38,671	3.76%	$29,010,438.00
Polar Capital Holdings Plc	31 Dec, 2025	1,008,163	-292,273	-22.48%	$27,381,707.00
Pictet Asset Management Holding SA	31 Dec, 2025	968,616	-243,374	-20.08%	$26,307,611.00

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