CELLDEX THERAPEUTICS INC NEW CLDX
COM NEW · Common Stock · CUSIP 15117B202 · ISIN US15117B2025
American biopharmaceutical company
- SectorHealth care
- IndustryIn Vitro & In Vivo Diagnostic Substances
- HeadquartersHampton, NJ
- Founded1983
- Websitecelldex.com
- FilingsSEC EDGAR
* Summed across managers. Shares that two managers' reports both contain – a subsidiary's holdings that its parent's report includes too, or a sub-adviser's in its client's – are counted once ($2.1m this quarter). Holder counts are more reliable. Shares outstanding: 78.5m as of 2026-07-29, from the company's own SEC filing; the percentage can still exceed 100%: lent-out shares are counted by the lender and the buyer, and some reports overlap without saying so. Implied quarter-end price ≈ $37.21. Options: 8 managers hold calls ($11.3m notional), 12 hold puts ($18.8m).
Trends to Q2 2026
Institutional holders
Managers reporting a position, each quarter
Numbers
| Quarter | Holders |
|---|---|
| Q3 2022 | 161 |
| Q4 2022 | 168 |
| Q1 2023 | 163 |
| Q2 2023 | 152 |
| Q3 2023 | 146 |
| Q4 2023 | 166 |
| Q1 2024 | 199 |
| Q2 2024 | 185 |
| Q3 2024 | 178 |
| Q4 2024 | 176 |
| Q1 2025 | 173 |
| Q2 2025 | 184 |
| Q3 2025 | 185 |
| Q4 2025 | 188 |
| Q1 2026 | 230 |
| Q2 2026 | 254 |
Buyers vs sellers
Managers adding to or starting a position, vs cutting or selling out
Numbers
| Quarter | Bought or added | Cut or sold out |
|---|---|---|
| Q3 2024 | 86 | 85 |
| Q4 2024 | 91 | 84 |
| Q1 2025 | 90 | 82 |
| Q2 2025 | 114 | 71 |
| Q3 2025 | 90 | 82 |
| Q4 2025 | 80 | 80 |
| Q1 2026 | 119 | 72 |
| Q2 2026 | 150 | 79 |
Calls vs puts
Options held, notional value, last 4 quarters. P/C = puts ÷ calls
Numbers
| Quarter | Calls | Puts | P/C |
|---|---|---|---|
| Q3 2025 | $3.0m | $6.4m | 2.15 |
| Q4 2025 | $1.6m | $749.6k | 0.47 |
| Q1 2026 | $3.8m | $6.1m | 1.61 |
| Q2 2026 | $11.3m | $18.8m | 1.67 |
Biggest buyers
| PRICE T ROWE ASSOCIATES INC /MD/ | Added | +2.6m |
| Deep Track Capital, LP | Added | +1.7m |
| Logos Global Management LP | Added | +1.6m |
| BlackRock, Inc. | Added | +1.6m |
| Assenagon Asset Management S.A. | Added | +1.4m |
| STATE STREET CORP | Added | +1.1m |
| Driehaus Capital Management LLC | New | +989.4k |
| WELLINGTON MANAGEMENT GROUP LLP | Added | +983.2k |
| GOLDMAN SACHS GROUP INC | Added | +626.9k |
| Foresite Capital Management VI LLC | Added | +563.8k |
Biggest sellers
| Point72 Asset Management, L.P. | Reduced | -3.1m |
| Commodore Capital LP | Reduced | -1.3m |
| Vestal Point Capital, LP | Sold out | -1.2m |
| BRAIDWELL LP | Reduced | -919.4k |
| Kynam Capital Management, LP | Reduced | -517.7k |
| TSP Capital Management Group, LLC | Sold out | -375.1k |
| STEMPOINT CAPITAL LP | Reduced | -330.1k |
| CITADEL ADVISORS LLC | Sold out | -200.6k |
| SILVERARC CAPITAL MANAGEMENT, LLC | Sold out | -178.4k |
| NOVO HOLDINGS A/S | Reduced | -175.0k |
Biggest calls
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | Added | $6.4m172.6k shares |
| DIADEMA PARTNERS LP | New | $1.9m50.9k shares |
| GROUP ONE TRADING LLC | Added | $948.9k25.5k shares |
| CITADEL ADVISORS LLC | Reduced | $893.0k24.0k shares |
| SIMPLEX TRADING, LLC | Added | $491.2k13.2k shares |
| JANE STREET GROUP, LLC | Reduced | $487.5k13.1k shares |
| Persistent Asset Partners Ltd | New | $68.8k129 shares |
| Point72 Asset Management, L.P. | New | $44.7k1.2k shares |
Biggest puts
| Ikarian Capital, LLC | Unchanged | $4.2m114.0k shares |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | Added | $3.8m100.9k shares |
| Caption Management, LLC | New | $3.3m90.0k shares |
| DIADEMA PARTNERS LP | New | $3.2m86.0k shares |
| NOMURA HOLDINGS INC | New | $1.5m40.0k shares |
| CITADEL ADVISORS LLC | Added | $1.3m33.9k shares |
| BOOTHBAY FUND MANAGEMENT, LLC | Unchanged | $1.2m33.3k shares |
| JANE STREET GROUP, LLC | New | $212.1k5.7k shares |
| SIMPLEX TRADING, LLC | Added | $40.9k1.1k shares |
| Point72 Asset Management, L.P. | New | $37.2k1.0k shares |
Options at notional value: the value of the shares the contracts control, as filers report them, not what the options cost. Not included in the holders, shares or buying above.
Major shareholders (over 5%)
Anyone who owns more than 5% of a class of the company's shares has to say so: on Schedule 13D if they may try to influence or control the company, on 13G if they're a passive investor, and update it as the stake changes. Each holder's latest filing, from 19 Dec 2024 on; percentages are of the share class, as the holder worked them out.
| Holder | Stake |
|---|---|
| WELLINGTON MANAGEMENT GROUP LLP 13G · institution +1.1 pts · filed 2026-02-10 | 12.2% |
| FMR LLC 13G · institution +5.1 pts · filed 2026-10-07 | 10.7% |
| BlackRock, Inc. 13G · institution -1.0 pts · filed 2025-04-17 | 7.3% |
| Kynam Capital Management, LP 13G · institution -2.0 pts · filed 2026-08-14 | 6.8% |
| PRICE T ROWE ASSOCIATES INC /MD/ 13G · institution +2.4 pts · filed 2026-08-14 | 6.0% |
| VANGUARD CAPITAL MANAGEMENT LLC 13G · institution new · filed 2026-04-29 | 5.2% |
Fell to 5% or below in the last year: Bellevue Group AG (1.5%, 2026-05-15), STATE STREET CORP (4.2%, 2026-05-12), VANGUARD GROUP INC (0.0%, 2026-03-26; now reported by VANGUARD CAPITAL MANAGEMENT LLC), Point72 Asset Management, L.P. (2.6%, 2026-03-10), Commodore Capital LP (4.6%, 2025-11-14)
Insider purchases and sales since 1 Apr 2026
Shares bought or sold by the company's own officers, directors and 10% owners, in the open market or privately, as they reported to the SEC on Form 4 (due within two business days of the trade). Grants, option exercises, shares withheld for tax and gifts aren't included.
Officers and directors buying vs selling
Number of people, by quarter (10% owners not included)
Numbers
| Quarter | Buying | Bought | Selling | Sold | Sold under a plan |
|---|---|---|---|---|---|
| Q4 2024 | 1 | $308.4k | 0 | — | — |
| Q1 2025 | 0 | — | 0 | — | — |
| Q2 2025 | 0 | — | 0 | — | — |
| Q3 2025 | 0 | — | 1 | $19.1k | — |
| Q4 2025 | 0 | — | 1 | $121.2k | — |
| Q1 2026 | 0 | — | 0 | — | — |
| Q2 2026 | 0 | — | 0 | — | — |
| Q3 2026 | 0 | — | 0 | — | — |
None reported since 1 Apr 2026.
Holders, Q2 2026
| Manager | Shares | Change |
|---|---|---|
| WELLINGTON MANAGEMENT GROUP LLP 0.06% of their portfolio | 9.5m $355.1m | Added +983.2k |
| BlackRock, Inc. 0.00% of their portfolio | 7.0m $260.6m | Added +1.6m |
| Kynam Capital Management, LP 10.95% of their portfolio | 5.3m $198.1m | Reduced -517.7k |
| PRICE T ROWE ASSOCIATES INC /MD/ 0.02% of their portfolio | 4.7m $174.3m | Added +2.6m |
| STATE STREET CORP 0.00% of their portfolio | 3.9m $145.1m | Added +1.1m |
| FMR LLC 0.01% of their portfolio | 3.7m $138.5m | Reduced -26.2k |
| VANGUARD CAPITAL MANAGEMENT LLC 0.00% of their portfolio | 3.5m $128.9m | Added +503.9k |
| Deep Track Capital, LP 1.61% of their portfolio | 2.9m $109.4m | Added +1.7m |
| Logos Global Management LP 3.36% of their portfolio | 2.1m $78.1m | Added +1.6m |
| GEODE CAPITAL MANAGEMENT, LLC 0.00% of their portfolio | 2.0m $75.3m | Added +334.2k |
| Eversept Partners, LP 3.62% of their portfolio | 1.8m $66.5m | Reduced -2.1k |
| GOLDMAN SACHS GROUP INC 0.01% of their portfolio | 1.6m $60.1m | Added +626.9k |
| Assenagon Asset Management S.A. 0.04% of their portfolio | 1.6m $58.7m | Added +1.4m |
| Commodore Capital LP 2.99% of their portfolio | 1.4m $50.2m | Reduced -1.3m |
| Bellevue Group AG 0.94% of their portfolio | 1.2m $44.7m | Unchanged |
| BAKER BROS. ADVISORS LP 0.22% of their portfolio | 1.2m $44.0m | Added +517.2k |
| MILLENNIUM MANAGEMENT LLC 0.03% of their portfolio | 1.2m $43.6m | Reduced -82.7k |
| DIMENSIONAL FUND ADVISORS LP 0.01% of their portfolio | 1.1m $40.0m | Added +14.5k |
| AMERICAN CENTURY COMPANIES INC 0.02% of their portfolio | 1.0m $38.8m | Added +186.1k |
| EVENTIDE ASSET MANAGEMENT, LLC 0.52% of their portfolio | 1.0m $38.6m | Unchanged |
| NOVO HOLDINGS A/S 2.21% of their portfolio | 1.0m $38.1m | Reduced -175.0k |
| Elmind Capital, LP 9.25% of their portfolio | 990.0k $36.8m | Added +125.0k |
| Driehaus Capital Management LLC 0.21% of their portfolio | 989.4k $36.8m | New |
| Fisher Asset Management, LLC 0.01% of their portfolio | 985.7k $36.7m | Reduced -28.0k |
| Pictet Asset Management Holding SA 0.03% of their portfolio | 917.4k $34.1m | Reduced -6.3k |
| Foresite Capital Management VI LLC 5.09% of their portfolio | 879.7k $32.7m | Added +563.8k |
| VANGUARD PORTFOLIO MANAGEMENT LLC 0.00% of their portfolio | 863.5k $32.1m | Added +234.3k |
| NORTHERN TRUST CORP 0.00% of their portfolio | 719.6k $26.8m | Added +142.4k |
| Woodline Partners LP 0.08% of their portfolio | 700.8k $26.1m | Added +200.7k |
| Affinity Asset Advisors, LLC 1.27% of their portfolio | 700.0k $26.0m | Added +200.0k |
| Rock Springs Capital Management LP 1.27% of their portfolio | 699.1k $26.0m | Added +48.9k |
| TWO SIGMA INVESTMENTS, LP 0.02% of their portfolio | 661.2k $24.6m | Added +524.2k |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC 0.00% of their portfolio | 656.0k $24.4m | Added +110.5k |
| ALGERT GLOBAL LLC 0.29% of their portfolio | 647.8k $24.1m | Added +432.7k |
| ADAR1 Capital Management, LLC 1.08% of their portfolio | 619.5k $23.1m | Added +191.7k |
| BANK OF AMERICA CORP /DE/ 0.00% of their portfolio | 607.2k $22.6m | Reduced -101.5k |
| PANAGORA ASSET MANAGEMENT INC 0.07% of their portfolio | 572.5k $21.3m | Added +430.2k |
| Nuveen, LLC 0.01% of their portfolio | 568.5k $21.2m | Added +366.5k |
| VANGUARD FIDUCIARY TRUST CO 0.00% of their portfolio | 553.0k $20.6m | Added +123.4k |
| 5AM Venture Management, LLC 6.43% of their portfolio | 497.3k $18.5m | Unchanged |
| FEDERATED HERMES, INC. 0.03% of their portfolio | 492.9k $18.3m | New |
| UBS Group AG 0.00% of their portfolio | 482.0k $17.9m | Added +185.0k |
| Candriam S.C.A. 0.08% of their portfolio | 481.1k $17.9m | Added +202.2k |
| Ikarian Capital, LLC 2.91% of their portfolio | 478.5k $17.8m | Added +17.3k |
| BRAIDWELL LP 0.60% of their portfolio | 436.6k $16.2m | Reduced -919.4k |
| Redmile Group, LLC 1.08% of their portfolio | 433.9k $16.1m | Added +172.4k |
| CITIGROUP INC 0.01% of their portfolio | 404.7k $15.1m | Added +187.4k |
| Palo Alto Investors LP 2.06% of their portfolio | 399.9k $14.9m | Added +103.4k |
| TSP Capital Management Group, LLC 3.30% of their portfolio | 371.1k $13.8m | New |
| PFM Health Sciences, LP 1.11% of their portfolio | 342.8k $12.8m | Added +17.8k |
| KENNEDY CAPITAL MANAGEMENT LLC 0.23% of their portfolio | 342.3k $12.7m | Reduced -10.0k |
| SEGALL BRYANT & HAMILL, LLC 0.15% of their portfolio | 336.3k $12.5m | Reduced -10.6k |
| Tetragon Partners GP Ltd 1.76% of their portfolio | 290.4k $10.8m | Reduced -21.9k |
| SUPERSTRING CAPITAL MANAGEMENT LP 6.76% of their portfolio | 287.6k $10.7m | Added +107.5k |
| GordonMD Global Investments LP 5.04% of their portfolio | 279.7k $10.4m | Added +109.4k |
| SummitTX Capital, L.P. 0.25% of their portfolio | 255.0k $9.5m | Added +18.3k |
| SPHERA FUNDS MANAGEMENT LTD. 1.28% of their portfolio | 240.9k $9.0m | Reduced -2.7k |
| Bank of New York Mellon Corp 0.00% of their portfolio | 224.2k $8.3m | Added +33.8k |
| Rosalind Advisors, Inc. 2.80% of their portfolio | 200.0k $7.4m | Reduced -130.0k |
| MORGAN STANLEY 0.00% of their portfolio | 197.0k $7.3m | Reduced -20.6k |
| Universal- Beteiligungs- und Servicegesellschaft mbH 0.01% of their portfolio | 195.8k $7.3m | Added +125.7k |
| Trexquant Investment LP 0.04% of their portfolio | 184.5k $6.9m | New |
| Mirador Capital Partners LP 0.83% of their portfolio | 181.1k $6.7m | Added +3.0k |
| STEMPOINT CAPITAL LP 1.15% of their portfolio | 178.4k $6.6m | Reduced -330.1k |
| Corient Private Wealth LP 0.01% of their portfolio | 177.0k $6.6m | Added +162.3k |
| DEUTSCHE BANK AG\ 0.00% of their portfolio | 176.6k $6.6m | Added +33.6k |
| JPMORGAN CHASE & CO 0.00% of their portfolio | 157.2k $6.0m | Reduced -7.5k |
| Cinctive Capital Management LP 0.22% of their portfolio | 145.6k $5.4m | Added +104.4k |
| BOOTHBAY FUND MANAGEMENT, LLC 0.10% of their portfolio | 140.1k $5.2m | Added +5.1k |
| FIRST TRUST ADVISORS LP 0.00% of their portfolio | 138.7k $5.2m | Added +70.2k |
| Swiss National Bank 0.00% of their portfolio | 135.0k $5.0m | Added +17.1k |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC 0.00% of their portfolio | 135.0k $5.0m | Added +14.2k |
| MONTANOVA CAPITAL, LLC 0.09% of their portfolio | 121.3k $4.5m | New |
| Connor, Clark & Lunn Investment Management Ltd. 0.01% of their portfolio | 120.4k $4.5m | Reduced -63.7k |
| Point72 Asset Management, L.P. 0.01% of their portfolio | 117.2k $4.4m | Reduced -3.1m |
| BNP PARIBAS ASSET MANAGEMENT Holding S.A. 0.00% of their portfolio | 117.0k $4.4m | Reduced -5.4k |
| Jump Financial, LLC 0.04% of their portfolio | 116.3k $4.3m | Added +107.5k |
| RHUMBLINE ADVISERS 0.00% of their portfolio | 105.0k $3.9m | Added +19.0k |
| Propel Bio Management, LLC 2.02% of their portfolio | 103.7k $3.9m | Reduced -27.7k |
| Invesco Ltd. 0.00% of their portfolio | 103.1k $3.8m | Added +9.4k |
| Russell Investments Group, Ltd. 0.00% of their portfolio | 100.5k $3.7m | Added +92.0k |
| Integral Health Asset Management, LLC 0.15% of their portfolio | 100.0k $3.7m | New |
| Odyssean, LLC 0.58% of their portfolio | 95.1k $3.5m | New |
| MANUFACTURERS LIFE INSURANCE COMPANY, THE 0.00% of their portfolio | 89.3k $3.3m | Added +11.6k |
| ALLIANCEBERNSTEIN L.P. 0.00% of their portfolio | 88.6k $2.8m | Added +23.1k |
| HighVista Strategies LLC 0.74% of their portfolio | 87.0k $3.2m | Reduced -2.4k |
| AQR CAPITAL MANAGEMENT LLC 0.00% of their portfolio | 86.9k $3.2m | Added +79.1k |
| Seven Fleet Capital Management LP 0.53% of their portfolio | 86.7k $3.2m | Added +57.4k |
| PDT Partners, LLC 0.16% of their portfolio | 80.9k $3.0m | Reduced -16.9k |
| TD Asset Management Inc 0.00% of their portfolio | 79.3k $3.0m | Added +9.0k |
| ALPS ADVISORS INC 0.01% of their portfolio | 79.2k $2.9m | Added +25.0k |
| WELLS FARGO & COMPANY/MN 0.00% of their portfolio | 78.2k $2.9m | Added +43.0k |
| CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM 0.00% of their portfolio | 77.7k $2.9m | Reduced -1.9k |
| XTX Topco Ltd 0.04% of their portfolio | 75.1k $2.8m | Added +63.1k |
| Birchview Capital, LP 1.22% of their portfolio | 69.9k $2.6m | Reduced -195 |
| Quantinno Capital Management LP 0.00% of their portfolio | 69.0k $2.6m | Added +3.3k |
| DAFNA Capital Management LLC 0.49% of their portfolio | 68.5k $2.5m | Unchanged |
| Man Group plc 0.00% of their portfolio | 63.5k $2.4m | New |
| TEACHERS RETIREMENT SYSTEM OF THE STATE OF KENTUCKY 0.02% of their portfolio | 59.7k $2.2m | Added +26.6k |
| Legal & General Group Plc 0.00% of their portfolio | 59.6k $2.2m | Added +4.5k |