IMMUNOCORE HLDGS PLC IMCR
ADS · ADR · CUSIP 45258D105 · ISIN US45258D1054
- SectorHealth care
- IndustryBiological Products, (No Diagnostic Substances)
- HeadquartersPhiladelphia, United Kingdom
- Founded2008
- Websiteimmunocore.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 ($5.6k this quarter). Holder counts are more reliable. Implied quarter-end price ≈ $30.15. Options: 6 managers hold calls ($6.0m notional), 7 hold puts ($49.7m).
Trends to Q1 2026
Institutional holders
Managers reporting a position, each quarter
Numbers
| Quarter | Holders |
|---|---|
| Q3 2022 | 86 |
| Q4 2022 | 105 |
| Q1 2023 | 111 |
| Q2 2023 | 122 |
| Q3 2023 | 127 |
| Q4 2023 | 135 |
| Q1 2024 | 151 |
| Q2 2024 | 140 |
| Q3 2024 | 131 |
| Q4 2024 | 117 |
| Q1 2025 | 118 |
| Q2 2025 | 135 |
| Q3 2025 | 133 |
| Q4 2025 | 149 |
| Q1 2026 | 142 |
Buyers vs sellers
Managers adding to or starting a position, vs cutting or selling out
Numbers
| Quarter | Bought or added | Cut or sold out |
|---|---|---|
| Q2 2024 | 82 | 71 |
| Q3 2024 | 65 | 65 |
| Q4 2024 | 47 | 71 |
| Q1 2025 | 58 | 45 |
| Q2 2025 | 75 | 54 |
| Q3 2025 | 58 | 65 |
| Q4 2025 | 73 | 49 |
| Q1 2026 | 74 | 71 |
Calls vs puts
Options held, notional value, last 4 quarters. P/C = puts ÷ calls
Numbers
| Quarter | Calls | Puts | P/C |
|---|---|---|---|
| Q2 2025 | $9.2m | $36.6m | 3.98 |
| Q3 2025 | $11.7m | $63.0m | 5.39 |
| Q4 2025 | $4.6m | $3.2m | 0.71 |
| Q1 2026 | $6.0m | $49.7m | 8.27 |
Biggest buyers
| Vestal Point Capital, LP | Added | +2.2m |
| TWO SIGMA INVESTMENTS, LP | Added | +662.0k |
| Logos Global Management LP | Added | +650.0k |
| Point72 Asset Management, L.P. | Added | +598.1k |
| Caption Management, LLC | Added | +567.4k |
| BlackRock, Inc. | Added | +327.2k |
| MILLENNIUM MANAGEMENT LLC | Added | +325.8k |
| FMR LLC | Added | +289.9k |
| CANTOR FITZGERALD, L. P. | New | +250.2k |
| Hudson Bay Capital Management LP | Added | +249.6k |
Biggest sellers
| T. Rowe Price Investment Management, Inc. | Reduced | -4.9m |
| BAKER BROS. ADVISORS LP | Reduced | -1.6m |
| TWO SIGMA ADVISERS, LP | Sold out | -322.3k |
| PRIMECAP MANAGEMENT CO/CA/ | Reduced | -268.6k |
| BVF INC/IL | Reduced | -194.5k |
| TD Asset Management Inc | Reduced | -156.9k |
| PRINCIPAL FINANCIAL GROUP INC | Reduced | -139.3k |
| AMERIPRISE FINANCIAL INC | Sold out | -135.2k |
| Exome Asset Management LLC | Sold out | -76.8k |
| BARCLAYS PLC | Reduced | -72.3k |
Biggest calls
| JANE STREET GROUP, LLC | Added | $1.8m59.2k shares |
| CANTOR FITZGERALD, L. P. | Unchanged | $1.5m50.5k shares |
| Caption Management, LLC | New | $904.5k30.0k shares |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | Added | $768.8k25.5k shares |
| CITIGROUP INC | Unchanged | $753.8k25.0k shares |
| SIMPLEX TRADING, LLC | Unchanged | $283.4k9.4k shares |
Biggest puts
| Caption Management, LLC | Added | $37.5m1.2m shares |
| JANE STREET GROUP, LLC | New | $10.0m332.7k shares |
| CITIGROUP INC | Unchanged | $753.8k25.0k shares |
| TUDOR INVESTMENT CORP ET AL | Unchanged | $663.3k22.0k shares |
| WOLVERINE ASSET MANAGEMENT LLC | Unchanged | $385.9k12.8k shares |
| CITADEL ADVISORS LLC | Added | $298.5k9.9k shares |
| SIMPLEX TRADING, LLC | Added | $153.8k5.1k 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 +1.4 pts · filed 2026-08-13 | 11.6% |
| Jallal Bahija 13G · exempt (held before listing) new · filed 2025-02-14 | 8.2% |
| PRIMECAP MANAGEMENT CO/CA/ 13G · institution +2.2 pts · filed 2025-08-14 | 7.5% |
| Bellevue Group AG 13G · institution new · filed 2025-11-14 | 5.6% |
| TANG CAPITAL MANAGEMENT LLC 13G · passive investor new · filed 2025-10-24 | 5.2% |
Fell to 5% or below in the last year: FMR LLC (3.6%, 2026-10-07), Vestal Point Capital, LP (3.5%, 2026-08-14), T. Rowe Price Investment Management, Inc. (3.7%, 2026-05-15)
Insider purchases and sales in Q1 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 |
|---|---|---|---|---|---|
| Q2 2024 | 0 | — | 1 | $280.3k | $280.3k |
| Q3 2024 | 0 | — | 0 | — | — |
| Q4 2024 | 0 | — | 0 | — | — |
| Q1 2025 | 1 | $24.0m | 0 | — | — |
| Q2 2025 | 0 | — | 0 | — | — |
| Q3 2025 | 0 | — | 1 | $4.8m | $4.8m |
| Q4 2025 | 0 | — | 1 | $5.0m | $5.0m |
| Q1 2026 | 0 | — | 4 | $619.1k | — |
| Date | Insider | Trade | Value |
|---|---|---|---|
| 2026-02-18 | Jallal Bahija CHIEF EXECUTIVE OFFICER, director | Sold | $371.2k11.5k shares |
| 2026-02-18 | Berman David M HEAD OF R&D | Sold | $193.0k6.0k shares |
| 2026-02-18 | St Leger Tina Amber CHIEF HR OFFICER | Sold | $32.4k1.0k shares |
| 2026-02-18 | GOLL JOHN SVP, FINANCE & CAO | Sold | $22.6k698 shares |
Their holding: how much the trade added to or took from the insider's holding (direct, or the trust or fund named). The same trade is sometimes reported by more than one insider, such as a fund and the director who represents it; totals count it once. A value is left blank where the reported price is far from the market price (usually a typo).
Holders, Q1 2026
| Manager | Shares | Change |
|---|---|---|
| RTW INVESTMENTS, LP 1.46% of their portfolio | 4.9m $146.8m | Unchanged |
| FMR LLC 0.01% of their portfolio | 4.8m $145.6m | Added +289.9k |
| WELLINGTON MANAGEMENT GROUP LLP 0.03% of their portfolio | 4.7m $141.9m | Added +12.5k |
| PRIMECAP MANAGEMENT CO/CA/ 0.09% of their portfolio | 3.7m $111.4m | Reduced -268.6k |
| Bellevue Group AG 2.01% of their portfolio | 2.8m $84.3m | Unchanged |
| Vestal Point Capital, LP 2.33% of their portfolio | 2.8m $83.4m | Added +2.2m |
| TANG CAPITAL MANAGEMENT LLC 4.06% of their portfolio | 2.6m $79.9m | Added +20.8k |
| Deep Track Capital, LP 1.20% of their portfolio | 1.9m $58.2m | Reduced -72.1k |
| T. Rowe Price Investment Management, Inc. 0.04% of their portfolio | 1.9m $57.0m | Reduced -4.9m |
| Logos Global Management LP 2.33% of their portfolio | 1.5m $45.2m | Added +650.0k |
| BVF INC/IL 1.24% of their portfolio | 1.3m $39.0m | Reduced -194.5k |
| MILLENNIUM MANAGEMENT LLC 0.03% of their portfolio | 1.2m $37.3m | Added +325.8k |
| ARMISTICE CAPITAL, LLC 1.18% of their portfolio | 1.2m $35.8m | Added +90.0k |
| Point72 Asset Management, L.P. 0.06% of their portfolio | 1.1m $33.2m | Added +598.1k |
| Fiera Capital Corp 0.11% of their portfolio | 1.1m $32.6m | Added +35.3k |
| TWO SIGMA INVESTMENTS, LP 0.03% of their portfolio | 1.0m $30.8m | Added +662.0k |
| PRICE T ROWE ASSOCIATES INC /MD/ 0.00% of their portfolio | 919.3k $27.7m | Reduced -49.5k |
| Kynam Capital Management, LP 1.69% of their portfolio | 884.9k $26.7m | Added +28.5k |
| BAKER BROS. ADVISORS LP 0.13% of their portfolio | 734.4k $22.1m | Reduced -1.6m |
| Trails Edge Capital Partners, LP 4.84% of their portfolio | 682.6k $20.6m | Unchanged |
| Caption Management, LLC 0.95% of their portfolio | 661.8k $20.0m | Added +567.4k |
| BlackRock, Inc. 0.00% of their portfolio | 656.3k $19.8m | Added +327.2k |
| Hudson Bay Capital Management LP 0.11% of their portfolio | 633.2k $19.1m | Added +249.6k |
| JANUS HENDERSON GROUP PLC 0.01% of their portfolio | 594.7k $17.9m | Added +140.3k |
| PRINCIPAL FINANCIAL GROUP INC 0.01% of their portfolio | 519.1k $15.7m | Reduced -139.3k |
| ACADIAN ASSET MANAGEMENT LLC 0.02% of their portfolio | 501.1k $15.1m | Added +39.3k |
| Frazier Life Sciences Management, L.P. 0.38% of their portfolio | 484.8k $14.6m | Added +100.0k |
| MASSACHUSETTS FINANCIAL SERVICES CO /MA/ 0.00% of their portfolio | 407.4k $12.3m | Reduced -31 |
| D. E. Shaw & Co., Inc. 0.01% of their portfolio | 335.2k $10.1m | Added +151.3k |
| MORGAN STANLEY 0.00% of their portfolio | 323.6k $9.8m | Added +36.5k |
| Woodline Partners LP 0.04% of their portfolio | 316.8k $9.6m | Added +77 |
| Candriam S.C.A. 0.04% of their portfolio | 269.7k $8.1m | Unchanged |
| CANTOR FITZGERALD, L. P. 0.27% of their portfolio | 250.2k $7.5m | New |
| CITADEL ADVISORS LLC 0.00% of their portfolio | 230.4k $6.9m | Reduced -3.9k |
| NEW YORK STATE COMMON RETIREMENT FUND 0.01% of their portfolio | 211.1k $6.4m | Unchanged |
| BANK OF AMERICA CORP /DE/ 0.00% of their portfolio | 206.9k $6.2m | Reduced -27.9k |
| JANE STREET GROUP, LLC 0.01% of their portfolio | 204.4k $6.2m | Added +103.4k |
| MOORE CAPITAL MANAGEMENT, LP 0.22% of their portfolio | 197.3k $5.9m | New |
| DIADEMA PARTNERS LP 2.41% of their portfolio | 193.2k $5.8m | Added +122.9k |
| MARSHALL WACE, LLP 0.01% of their portfolio | 180.3k $5.4m | Added +119.2k |
| RENAISSANCE TECHNOLOGIES LLC 0.01% of their portfolio | 164.0k $4.9m | Added +23.1k |
| Legal & General Group Plc 0.00% of their portfolio | 156.1k $4.7m | Added +6.8k |
| TD Asset Management Inc 0.00% of their portfolio | 135.8k $4.1m | Reduced -156.9k |
| STEMPOINT CAPITAL LP 0.37% of their portfolio | 127.1k $3.8m | New |
| GOLDMAN SACHS GROUP INC 0.00% of their portfolio | 119.5k $3.6m | Added +87.1k |
| Aberdeen Group plc 0.01% of their portfolio | 116.9k $3.5m | New |
| J. Goldman & Co LP 0.16% of their portfolio | 114.7k $3.5m | New |
| Balyasny Asset Management L.P. 0.01% of their portfolio | 113.8k $3.4m | New |
| LORD, ABBETT & CO. LLC 0.01% of their portfolio | 100.8k $3.0m | New |
| Integral Health Asset Management, LLC 0.16% of their portfolio | 100.0k $3.0m | New |
| STATE STREET CORP 0.00% of their portfolio | 97.9k $3.0m | Added +4.4k |
| XTX Topco Ltd 0.05% of their portfolio | 96.1k $2.9m | Added +74.1k |
| BNP PARIBAS ASSET MANAGEMENT Holding S.A. 0.00% of their portfolio | 94.9k $2.9m | Reduced -968 |
| Rhenman & Partners Asset Management AB 0.32% of their portfolio | 85.7k $2.6m | Reduced -67.6k |
| Catalio Capital Management, LP 0.53% of their portfolio | 84.4k $2.5m | New |
| Eschler Asset Management LLP 2.40% of their portfolio | 80.0k $2.4m | Unchanged |
| MANUFACTURERS LIFE INSURANCE COMPANY, THE 0.00% of their portfolio | 76.5k $2.3m | Reduced -8.7k |
| WELLS FARGO & COMPANY/MN 0.00% of their portfolio | 75.5k $2.3m | Reduced -1.8k |
| HUSSMAN STRATEGIC ADVISORS, INC. 0.41% of their portfolio | 63.0k $1.9m | Added +21.0k |
| SEI INVESTMENTS CO 0.00% of their portfolio | 61.3k $1.8m | Added +10.9k |
| HighVista Strategies LLC 0.49% of their portfolio | 58.7k $1.8m | Added +25.7k |
| Elmind Capital, LP 0.50% of their portfolio | 58.2k $1.8m | Unchanged |
| ENVESTNET ASSET MANAGEMENT INC 0.00% of their portfolio | 56.8k $1.7m | Added +1.6k |
| Persistent Asset Partners Ltd 0.57% of their portfolio | 49.0k $1.5m | Added +21.0k |
| Hennion & Walsh Asset Management, Inc. 0.05% of their portfolio | 47.1k $1.4m | Reduced -1.5k |
| Eagle Health Investments LP 0.29% of their portfolio | 46.3k $1.4m | Unchanged |
| ROYAL BANK OF CANADA 0.00% of their portfolio | 44.7k $1.3m | Added +2.2k |
| SCHRODER INVESTMENT MANAGEMENT GROUP 0.00% of their portfolio | 42.9k $1.3m | Reduced -66.9k |
| GEODE CAPITAL MANAGEMENT, LLC 0.00% of their portfolio | 42.9k $1.3m | Reduced -144 |
| UBS Group AG 0.00% of their portfolio | 42.1k $1.3m | Added +34.9k |
| ALPS ADVISORS INC 0.01% of their portfolio | 41.3k $1.2m | Reduced -226 |
| ExodusPoint Capital Management, LP 0.01% of their portfolio | 40.3k $1.2m | New |
| Eversept Partners, LP 0.08% of their portfolio | 39.2k $1.2m | New |
| Jump Financial, LLC 0.02% of their portfolio | 38.5k $1.2m | Reduced -22.7k |
| Crossmark Global Holdings, Inc. 0.02% of their portfolio | 36.5k $1.1m | Added +51 |
| Y-Intercept (Hong Kong) Ltd 0.02% of their portfolio | 34.9k $1.1m | Reduced -13.3k |
| COMMONWEALTH OF PENNSYLVANIA PUBLIC SCHOOL EMPLS RETRMT SYS 0.00% of their portfolio | 31.7k $955.0k | Added +23.5k |
| PUBLIC EMPLOYEES RETIREMENT SYSTEM OF OHIO 0.00% of their portfolio | 31.3k $942.3k | Added +6.1k |
| BARCLAYS PLC 0.00% of their portfolio | 30.9k $931.9k | Reduced -72.3k |
| Tidal Investments LLC 0.00% of their portfolio | 30.7k $924.1k | New |
| ASSETMARK, INC 0.00% of their portfolio | 28.4k $855.9k | Reduced -3.3k |
| State of New Jersey Common Pension Fund D 0.00% of their portfolio | 27.7k $834.0k | Unchanged |
| Virtus Investment Advisers, LLC 0.19% of their portfolio | 22.9k $691.6k | Added +4.4k |
| HRT FINANCIAL LP 0.00% of their portfolio | 22.9k $689.0k | Reduced -9.7k |
| Trexquant Investment LP 0.00% of their portfolio | 20.7k $623.7k | New |
| Orion Porfolio Solutions, LLC 0.01% of their portfolio | 20.5k $618.8k | Reduced -1.5k |
| VOLORIDGE INVESTMENT MANAGEMENT, LLC 0.00% of their portfolio | 19.5k $587.7k | Reduced -8.7k |
| Quadrature Capital Ltd 0.01% of their portfolio | 19.3k $580.5k | Reduced -19.4k |
| Bridgewater Associates, LP 0.00% of their portfolio | 18.9k $570.7k | Added +9.0k |
| BNP PARIBAS FINANCIAL MARKETS 0.00% of their portfolio | 16.9k $510.6k | Reduced -3.2k |
| Brevan Howard Capital Management LP 0.00% of their portfolio | 16.4k $481.8k | New |
| Squarepoint Ops LLC 0.00% of their portfolio | 15.4k $465.3k | Added +46 |
| PSP Research LLC 0.32% of their portfolio | 15.1k $456.5k | Added +717 |
| Engineers Gate Manager LP 0.01% of their portfolio | 13.9k $418.8k | New |
| STIFEL FINANCIAL CORP 0.00% of their portfolio | 11.2k $338.3k | Reduced -439 |
| China Universal Asset Management Co., Ltd. 0.02% of their portfolio | 10.8k $325.1k | Reduced -4.3k |
| TrinityBridge Ltd 0.01% of their portfolio | 10.1k $304.0k | New |
| Entropy Technologies, LP 0.01% of their portfolio | 10.0k $302.1k | New |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP 0.00% of their portfolio | 8.6k $260.0k | Reduced -26.6k |
| Federation des caisses Desjardins du Quebec 0.00% of their portfolio | 8.3k $251.2k | Added +2.8k |