Celldex Therapeutics, Inc.: which funds bought and sold

Institutions that bought and sold Celldex Therapeutics shares in Q2 2026, from the holdings they reported to the SEC on Form 13F for March 31, 2026 and June 30, 2026.

Between March 31, 2026 and June 30, 2026, 150 institutions that filed 13F reports for both quarters added to or opened positions in Celldex Therapeutics, and 78 cut or closed them. Together they added a net 13.0M shares, +17.8% on what they held at the start of the quarter. Active managers and hedge funds on our list were net buyers of 4.0M shares (+10.0%); index fund managers were net buyers of 4.2M shares (+27.7%). 45 opened a new position and 21 sold out entirely.

Bought, Q2 2026 150 institutions, 45 of them new holders Sold, Q2 2026 78 institutions, 21 of them sold out

Net change, all compared +13.0M shares (+17.8%)

Net change, active managers +4.0M shares (+10.0%), 32 bought, 21 sold

Buyers versus sellers

institutions compared, 267

150 bought 39 78 sold

Active managers and hedge funds 32 bought · 21 sold · +4.0M

Index fund managers 11 bought · 1 sold · +4.2M

Other institutions 107 bought · 56 sold · +4.8M

Biggest buyers

by change in shares held

Biggest buyers
Institution	Change in shares	Shares June 30, 2026	Value
Price T Rowe Associates Inc Active manager	+2.6M +124.6%	4.7M	$174M
Deep Track Capital, LP Hedge fund	+1.7M +128.9%	2.9M	$109M
Logos Global Management LP Hedge fund	+1.6M +366.7%	2.1M	$78.1M
Blackrock, Inc. Index funds	+1.6M +30.4%	7.0M	$261M
Assenagon Asset Management S.A.	+1.4M +976.5%	1.6M	$58.7M
State Street Corp Index funds	+1.1M +39.1%	3.9M	$145M
Driehaus Capital Management LLC Active manager	+989K New position	989K	$36.8M
Wellington Management Group LLP Active manager	+983K +11.5%	9.5M	$355M
Goldman Sachs Group Inc	+627K +63.4%	1.6M	$60.1M
Foresite Capital Management Vi LLC	+564K +178.5%	880K	$32.7M
Two Sigma Investments, LP Hedge fund	+524K +382.6%	661K	$24.6M
Baker Bros. Advisors LP Hedge fund	+517K +77.7%	1.2M	$44M
Vanguard Capital Management LLC Index funds	+504K +17.0%	3.5M	$129M
Federated Hermes, Inc. Active manager	+493K New position	493K	$18.3M
Algert Global LLC Hedge fund	+433K +201.1%	648K	$24.1M
Panagora Asset Management Inc Active manager	+430K +302.3%	573K	$21.3M
Tsp Capital Management Group, LLC	+371K New position	371K	$13.8M
Nuveen, LLC	+367K +181.5%	568K	$21.2M
Geode Capital Management, LLC Index funds	+334K +19.8%	2.0M	$75.3M
Vanguard Portfolio Management LLC Index funds	+234K +37.2%	864K	$32.1M

Biggest buyers, active managers and hedge funds
Institution	Change in shares	Shares June 30, 2026	Value
Price T Rowe Associates Inc Active manager	+2.6M +124.6%	4.7M	$174M
Deep Track Capital, LP Hedge fund	+1.7M +128.9%	2.9M	$109M
Logos Global Management LP Hedge fund	+1.6M +366.7%	2.1M	$78.1M
Driehaus Capital Management LLC Active manager	+989K New position	989K	$36.8M
Wellington Management Group LLP Active manager	+983K +11.5%	9.5M	$355M
Two Sigma Investments, LP Hedge fund	+524K +382.6%	661K	$24.6M
Baker Bros. Advisors LP Hedge fund	+517K +77.7%	1.2M	$44M
Federated Hermes, Inc. Active manager	+493K New position	493K	$18.3M
Algert Global LLC Hedge fund	+433K +201.1%	648K	$24.1M
Panagora Asset Management Inc Active manager	+430K +302.3%	573K	$21.3M

Biggest sellers

by change in shares held

Biggest sellers
Institution	Change in shares	Shares June 30, 2026	Value
Point72 Asset Management, L.P. Hedge fund	−3.1M −96.4%	117K	$4.4M
Commodore Capital LP Hedge fund	−1.3M −49.9%	1.4M	$50.2M
Vestal Point Capital, LP Hedge fund	−1.2M Sold out	0	—
Braidwell LP Hedge fund	−919K −67.8%	437K	$16.2M
Kynam Capital Management, LP Hedge fund	−518K −8.9%	5.3M	$198M
Stempoint Capital LP	−330K −64.9%	178K	$6.6M
Citadel Advisors LLC Hedge fund	−201K Sold out	0	—
Silverarc Capital Management, LLC	−178K Sold out	0	—
Novo Holdings A/S	−175K −14.6%	1.0M	$38.1M
BNP Paribas Financial Markets	−145K −82.3%	31K	$1.2M
Rosalind Advisors, Inc.	−130K −39.4%	200K	$7.4M
Bank Of America Corp	−101K −14.3%	607K	$22.6M
Jane Street Group, LLC	−90K Sold out	0	—
Millennium Management LLC Hedge fund	−83K −6.6%	1.2M	$43.6M
Connor, Clark & Lunn Investment Management Ltd.	−64K −34.6%	120K	$4.5M
Balyasny Asset Management L.P. Hedge fund	−59K −69.1%	26K	$979,107
Tudor Investment Corp Et Al Hedge fund	−35K Sold out	0	—
D. E. Shaw & Co., Inc. Hedge fund	−35K −66.3%	18K	$663,305
SG Americas Securities, LLC	−30K −79.2%	7,889	$294,000
Fisher Asset Management, LLC Active manager	−28K −2.8%	986K	$36.7M

Biggest sellers, active managers and hedge funds
Institution	Change in shares	Shares June 30, 2026	Value
Point72 Asset Management, L.P. Hedge fund	−3.1M −96.4%	117K	$4.4M
Commodore Capital LP Hedge fund	−1.3M −49.9%	1.4M	$50.2M
Vestal Point Capital, LP Hedge fund	−1.2M Sold out	0	—
Braidwell LP Hedge fund	−919K −67.8%	437K	$16.2M
Kynam Capital Management, LP Hedge fund	−518K −8.9%	5.3M	$198M
Citadel Advisors LLC Hedge fund	−201K Sold out	0	—
Millennium Management LLC Hedge fund	−83K −6.6%	1.2M	$43.6M
Balyasny Asset Management L.P. Hedge fund	−59K −69.1%	26K	$979,107
Tudor Investment Corp Et Al Hedge fund	−35K Sold out	0	—
D. E. Shaw & Co., Inc. Hedge fund	−35K −66.3%	18K	$663,305

New positions

largest by value

Institution	Shares	Value June 30, 2026
Driehaus Capital Management LLCActive manager	989K	$36.8M
Federated Hermes, Inc.Active manager	493K	$18.3M
Tsp Capital Management Group, LLC	371K	$13.8M
Trexquant Investment LPHedge fund	185K	$6.9M
Montanova Capital, LLCHedge fund	121K	$4.5M
Integral Health Asset Management, LLC	100K	$3.7M
Odyssean, LLC	95K	$3.5M
Man Group PLCHedge fund	64K	$2.4M
Caption Management, LLC	56K	$2.1M
Burkehill Global Management, LPHedge fund	50K	$1.9M

Sold out

largest by value

Institution	Shares	Value March 31, 2026
Vestal Point Capital, LPHedge fund	1.2M	$38.8M
Citadel Advisors LLCHedge fund	201K	$6.4M
Silverarc Capital Management, LLC	178K	$5.7M
Jane Street Group, LLC	90K	$2.9M
Tudor Investment Corp Et AlHedge fund	35K	$1.1M
Arrowmark Colorado Holdings LLC	25K	$793,000
Virtu Financial LLC	20K	$629,000
Marex Group Ltd	12K	$380,640
Twinbeech Capital LP	11K	$363,035
Scientech Research LLC	9,502	$301,403

Who holds the shares

13F holdings at June 30, 2026

Institutions reporting: 251
Ten largest holders: 52.1%
Index fund managers: 22.6%
Active managers and hedge funds: 51.3%

Buying and selling by type of institution, March 31, 2026 to June 30, 2026
Type	Bought	Sold	New	Sold out	Net change in shares	Net %
Active managers and hedge funds	32	21	12	5	+4.0M	+10.0%
Index fund managers	11	1	1	0	+4.2M	+27.7%
Other institutions	107	56	32	16	+4.8M	+27.0%

Active managers and hedge funds: a list we maintain of about 400 well-known stock-picking firms and hedge funds, matched by SEC registration number (CIK) and checked against the filer names each quarter. Index fund managers: the large index houses, such as BlackRock, Vanguard, State Street, Geode and Northern Trust. Every other filer (banks, brokers, wealth managers, pension funds, insurers and firms not on the list) counts as another institution. A firm that files under several SEC registrations appears once for each.

What these filings can and cannot tell you

Form 13F lists the long positions in US-listed shares held by investment managers with more than $100 million in such holdings. Managers file it up to 45 days after each quarter ends, so this page shows what funds held at the end of each quarter, not what they are doing now: a position may have changed since. Short positions, most derivatives and smaller managers are not included, and a cut can mean a fund lost clients or rebalanced rather than a view on Celldex Therapeutics.

Only managers that filed a holdings report for both quarters are compared (267 here). 8 other holders are left out: first-time or late filers, firms that changed their SEC registration, and filings that withheld positions under confidential treatment, any of which would otherwise look like a new position or a sale. Figures are as reported by each manager in the SEC's quarterly 13F data sets; option positions are excluded.

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