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Celldex Therapeutics, Inc.

CLDX
Exchange
Nasdaq
Industry
In Vitro & In Vivo Diagnostic Substances
SEC CIK
0000744218

No open-market purchases or sales by Celldex Therapeutics, Inc. insiders were filed in the last 90 days; 253 institutions reported holding it in 13F filings for Q2 2026, worth $3.16B in total; no superinvestor holds it.

Q3 2025 vs. Q2 2025

How the institutions holding Celldex Therapeutics, Inc. changed between Q2 2025 and Q3 2025.

All holders in Q3 2025All holders in Q2 2025

13F holders of CLDX: Q2 2025 compared with Q3 2025
MeasureQ2 2025Of which not filed for Q3 2025Q3 2025Change
Holders1821184+3
Shares72.3M1.20K70.7M−1.58M (−2.2%)
Value$1.48B$24.3K$1.83B+$350.6M (+23.7%)

1 institution that held it in Q2 2025 haven't filed for Q3 2025 yet. Not filing isn't selling, so the changes leave them out.

New holders (29)

Institutions that held Celldex Therapeutics, Inc. at the end of Q3 2025 but not at the end of Q2 2025.

Institutions new to CLDX in Q3 2025
InstitutionSharesValue% of portfolio
Braidwell LP591,689$15.3M0.45%
Affinity Asset Advisors, LLC300,000$7.76M0.72%
Propel Bio Management, LLC155,000$4.01M4.01%
AXA Investment Managers S.A.121,326$3.14M0.01%
Simplify Asset Management Inc.85,000$2.20M0.04%
First Trust Advisors LP35,531$919.2K0.00%
Tudor Investment Corp Et Al31,618$818.0K0.01%
Cubist Systematic Strategies, LLC30,446$787.6K0.01%
DAFNA Capital Management LLC24,518$634.3K0.16%
SG Americas Securities, LLC19,468$504.0K0.00%
Gsa Capital Partners LLP18,308$474.0K0.04%
Brevan Howard Capital Management LP14,362$371.5K0.01%
Balyasny Asset Management LLC11,632$300.9K0.00%
Cetera Investment Advisers9,905$256.2K0.00%
Transcend Wealth Collective, LLC9,237$239.0K0.02%
Prudential Financial Inc8,809$227.9K0.00%
Overbrook Management Corp8,797$227.6K0.04%
Argent Trust Co8,481$219.4K0.01%
Advisory Services Network, LLC5,390$139.4K0.00%
STRS Ohio2,900$75.0K0.00%
Quantbot Technologies LP2,442$63.2K0.00%
Bryn Mawr Trust Co1,633$42.2K0.00%
Aster Capital Management (DIFC) Ltd1,014$26.2K0.01%
Optiver Holding B.V.264$6.83K0.00%
Quadrant Capital Group LLC160$4.14K0.00%
Strategic Advocates LLC130$3.36K0.00%
Halbert Hargrove Global Advisors, LLC78$2.02K0.00%
Larson Financial Group LLC73$1.89K0.00%
Rockefeller Capital Management L.P.19$4920.00%

Sold out (26)

Institutions that held Celldex Therapeutics, Inc. at the end of Q2 2025 and filed for Q3 2025 without it.

Not filed for Q3 2025 yet (1)

Institutions that held Celldex Therapeutics, Inc. at the end of Q2 2025 and haven't filed a 13F for Q3 2025. Not filing isn't selling, so they aren't counted as sold out.

Institutions holding CLDX in Q2 2025 that haven't filed for Q3 2025
InstitutionShares, Q2 2025Value, Q2 2025
First Horizon Advisors, Inc.1,195$24.3K