Celldex Therapeutics, Inc. (CLDX) Institutional Ownership

Institutions by Trading Activity

Ownership Statistics

66,420,000Shares Outstanding

73,302,267Shares held by institutions

$2,472,485,466Value of institutional holdings

110.36%Institutional ownership %

6.90%Shares Changed QoQ

184No. of institutional investors

Shares Owned by Institutions

Shares Purchased/Sold by Institutions

Ownership Summary

Celldex Therapeutics, Inc. (NASDAQ:CLDX) appears in 184 institutional 13F filings for the quarter ending December 2025.

Collectively, these holders controlled 108.8% of Celldex Therapeutics's outstanding shares in December 2025, up from 107.3% in September 2025.
Their total shares held in CLDX increased 5.92% from the prior quarter, while the number of investors in Celldex Therapeutics increased 5.75% year over year.
Of these 184 holders, 81 added to their stakes in Celldex Therapeutics, 60 trimmed positions, and 43 made no changes.
Altogether, these fund groups held 72.23Mn shares in CLDX by December 2025, up by 4.04Mn shares quarter on quarter, and down 5.67Mn shares year over year.
WELLINGTON MANAGEMENT GROUP LLP holds the largest position in CLDX at 8.08Mn shares as of December 31, 2025, or 12.16% of shares outstanding.
The largest buyers of Celldex Therapeutics for the quarter ending December 2025 were WELLINGTON MANAGEMENT GROUP LLP (2.28Mn), BRAIDWELL LP (1.27Mn), ADAR1 Capital Management, LLC (1.18Mn), Goldman Sachs Group Inc (1.11Mn), Elmind Capital, LP (865.0K).
The biggest sellers of Celldex Therapeutics for the quarter ending December 2025 included Point72 Asset Management, L.P. (2.14Mn), Commodore Capital LP (463.34K), Barclays Plc (379.44K), Polar Capital Holdings Plc (292.27K), CITADEL ADVISORS LLC (264.23K).
According to Business Quant data, leading holders of CLDX for December 2025 are 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 (3.4Mn), Commodore Capital LP (2.56Mn), Goldman Sachs Group Inc (2.14Mn), Deep Track Capital, LP (1.9Mn).

184 Institutional Holders

73,302,267 Total Shares Held

Rows:

Download Data

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
Goldman Sachs Group Inc	31 Dec, 2025	2,136,262	1,106,802	107.51%	$58,020,876.00
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
ADAR1 Capital Management, LLC	31 Dec, 2025	1,293,534	1,184,092	1,081.94%	$35,132,384.00
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
Polar Capital Holdings Plc	31 Dec, 2025	1,008,163	-292,273	-22.48%	$27,381,707.00

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