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 ($5.9k this quarter). Holder counts are more reliable. Implied quarter-end price ≈ $31.74. Options: 6 managers hold calls ($6.1m notional), 8 hold puts ($20.1m).
Trends to Q2 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 |
| Q2 2026 | 136 |
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 | 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 |
| Q2 2026 | 78 | 70 |
Calls vs puts
Options held, notional value, last 4 quarters. P/C = puts ÷ calls
Numbers
| Quarter | Calls | Puts | P/C |
|---|---|---|---|
| Q3 2025 | $11.7m | $63.0m | 5.39 |
| Q4 2025 | $4.6m | $3.2m | 0.71 |
| Q1 2026 | $6.0m | $49.7m | 8.27 |
| Q2 2026 | $6.1m | $20.1m | 3.29 |
Biggest buyers
| Caligan Partners LP | New | +1.4m |
| WELLINGTON MANAGEMENT GROUP LLP | Added | +1.0m |
| ACADIAN ASSET MANAGEMENT LLC | Added | +708.8k |
| TWO SIGMA INVESTMENTS, LP | Added | +627.7k |
| BRAIDWELL LP | New | +521.3k |
| Jones Hill Capital LP | New | +512.9k |
| Kynam Capital Management, LP | Added | +490.1k |
| Fulcrum Asset Management LLP | New | +470.0k |
| CANTOR FITZGERALD, L. P. | Added | +430.0k |
| MARSHALL WACE, LLP | Added | +410.6k |
Biggest sellers
| T. Rowe Price Investment Management, Inc. | Sold out | -1.9m |
| Deep Track Capital, LP | Reduced | -1.6m |
| Fiera Capital Corp | Sold out | -1.1m |
| Vestal Point Capital, LP | Reduced | -966.9k |
| Logos Global Management LP | Reduced | -900.0k |
| BAKER BROS. ADVISORS LP | Sold out | -734.4k |
| FMR LLC | Reduced | -521.9k |
| Caption Management, LLC | Reduced | -489.3k |
| NEW YORK STATE COMMON RETIREMENT FUND | Reduced | -177.2k |
| MORGAN STANLEY | Reduced | -135.8k |
Biggest calls
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | Added | $2.1m65.2k shares |
| Caption Management, LLC | Added | $1.9m60.0k shares |
| CITIGROUP INC | Added | $952.5k30.0k shares |
| CITADEL ADVISORS LLC | New | $568.3k17.9k shares |
| GROUP ONE TRADING LLC | New | $476.2k15.0k shares |
| SIMPLEX TRADING, LLC | Reduced | $130.2k4.1k shares |
Biggest puts
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | New | $5.9m185.5k shares |
| Caption Management, LLC | Reduced | $5.5m173.1k shares |
| JANE STREET GROUP, LLC | Reduced | $2.2m70.1k shares |
| CITADEL ADVISORS LLC | Added | $2.1m67.3k shares |
| GROUP ONE TRADING LLC | New | $1.6m49.6k shares |
| HRT FINANCIAL LP | New | $1.6m49.4k shares |
| CITIGROUP INC | Added | $952.5k30.0k shares |
| SIMPLEX TRADING, LLC | Added | $254.0k8.0k 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 +1.4 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 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 | 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 | — |
| Q2 2026 | 0 | — | 0 | — | — |
| Q3 2026 | 0 | — | 0 | — | — |
None reported since 1 Apr 2026.
Holders, Q2 2026
| Manager | Shares | Change |
|---|---|---|
| WELLINGTON MANAGEMENT GROUP LLP 0.03% of their portfolio | 5.7m $181.7m | Added +1.0m |
| RTW INVESTMENTS, LP 1.32% of their portfolio | 4.9m $154.6m | Unchanged |
| FMR LLC 0.01% of their portfolio | 4.3m $136.8m | Reduced -521.9k |
| PRIMECAP MANAGEMENT CO/CA/ 0.07% of their portfolio | 3.6m $115.5m | Reduced -55.0k |
| Bellevue Group AG 1.86% of their portfolio | 2.8m $88.5m | Reduced -8.6k |
| TANG CAPITAL MANAGEMENT LLC 3.82% of their portfolio | 2.6m $84.1m | Unchanged |
| Vestal Point Capital, LP 1.34% of their portfolio | 1.8m $57.1m | Reduced -966.9k |
| TWO SIGMA INVESTMENTS, LP 0.04% of their portfolio | 1.6m $52.4m | Added +627.7k |
| MILLENNIUM MANAGEMENT LLC 0.03% of their portfolio | 1.6m $50.7m | Added +359.6k |
| ARMISTICE CAPITAL, LLC 1.25% of their portfolio | 1.4m $45.3m | Added +240.0k |
| Caligan Partners LP 2.12% of their portfolio | 1.4m $43.9m | New |
| Kynam Capital Management, LP 2.41% of their portfolio | 1.4m $43.7m | Added +490.1k |
| BVF INC/IL 1.05% of their portfolio | 1.3m $41.1m | Unchanged |
| ACADIAN ASSET MANAGEMENT LLC 0.05% of their portfolio | 1.2m $38.4m | Added +708.8k |
| Trails Edge Capital Partners, LP 5.36% of their portfolio | 1.1m $33.8m | Added +380.6k |
| BlackRock, Inc. 0.00% of their portfolio | 1.0m $31.9m | Added +348.3k |
| Point72 Asset Management, L.P. 0.05% of their portfolio | 990.3k $31.4m | Reduced -112.0k |
| PRICE T ROWE ASSOCIATES INC /MD/ 0.00% of their portfolio | 831.1k $26.4m | Reduced -88.3k |
| Jupiter Topco LLC 0.01% of their portfolio | 709.0k $22.5m | First filing |
| CANTOR FITZGERALD, L. P. 0.21% of their portfolio | 680.2k $21.6m | Added +430.0k |
| Logos Global Management LP 0.82% of their portfolio | 600.0k $19.1m | Reduced -900.0k |
| MARSHALL WACE, LLP 0.02% of their portfolio | 590.9k $18.8m | Added +410.6k |
| Hudson Bay Capital Management LP 0.09% of their portfolio | 590.0k $18.7m | Reduced -43.2k |
| CITADEL ADVISORS LLC 0.01% of their portfolio | 566.8k $18.0m | Added +336.4k |
| BRAIDWELL LP 0.61% of their portfolio | 521.3k $16.6m | New |
| Jones Hill Capital LP 3.46% of their portfolio | 512.9k $16.3m | New |
| PRINCIPAL FINANCIAL GROUP INC 0.01% of their portfolio | 485.8k $15.4m | Reduced -33.3k |
| Frazier Life Sciences Management, L.P. 0.34% of their portfolio | 484.8k $15.4m | Unchanged |
| Fulcrum Asset Management LLP 1.43% of their portfolio | 470.0k $14.3m | New |
| MASSACHUSETTS FINANCIAL SERVICES CO /MA/ 0.00% of their portfolio | 407.2k $12.9m | Reduced -154 |
| D. E. Shaw & Co., Inc. 0.01% of their portfolio | 405.1k $12.9m | Added +69.9k |
| Candriam S.C.A. 0.05% of their portfolio | 373.0k $11.8m | Added +103.3k |
| Woodline Partners LP 0.03% of their portfolio | 316.8k $10.1m | Unchanged |
| Deep Track Capital, LP 0.15% of their portfolio | 311.2k $9.9m | Reduced -1.6m |
| Legal & General Group Plc 0.00% of their portfolio | 299.7k $9.5m | Added +143.5k |
| BOOTHBAY FUND MANAGEMENT, LLC 0.18% of their portfolio | 295.5k $9.4m | New |
| MOORE CAPITAL MANAGEMENT, LP 0.20% of their portfolio | 274.7k $8.7m | Added +77.4k |
| DIADEMA PARTNERS LP 2.86% of their portfolio | 254.9k $8.1m | Added +61.7k |
| JANE STREET GROUP, LLC 0.00% of their portfolio | 233.3k $7.4m | Added +29.0k |
| Qube Research & Technologies Ltd 0.01% of their portfolio | 223.1k $7.1m | New |
| MORGAN STANLEY 0.00% of their portfolio | 187.8k $6.0m | Reduced -135.8k |
| Caption Management, LLC 0.19% of their portfolio | 172.5k $5.5m | Reduced -489.3k |
| Catalio Capital Management, LP 0.88% of their portfolio | 148.0k $4.7m | Added +63.7k |
| GOLDMAN SACHS GROUP INC 0.00% of their portfolio | 137.3k $4.4m | Added +17.8k |
| ARROWSTREET CAPITAL, LIMITED PARTNERSHIP 0.00% of their portfolio | 134.2k $4.3m | New |
| Jump Financial, LLC 0.04% of their portfolio | 131.9k $4.2m | Added +93.5k |
| Y-Intercept (Hong Kong) Ltd 0.08% of their portfolio | 126.7k $4.0m | Added +91.7k |
| BANK OF AMERICA CORP /DE/ 0.00% of their portfolio | 116.1k $3.7m | Reduced -90.7k |
| XTX Topco Ltd 0.05% of their portfolio | 116.1k $3.7m | Added +20.0k |
| TD Asset Management Inc 0.00% of their portfolio | 103.6k $3.3m | Reduced -32.3k |
| RENAISSANCE TECHNOLOGIES LLC 0.00% of their portfolio | 102.4k $3.3m | Reduced -61.6k |
| STATE STREET CORP 0.00% of their portfolio | 98.2k $3.1m | Added +289 |
| BNP PARIBAS ASSET MANAGEMENT Holding S.A. 0.00% of their portfolio | 90.9k $2.9m | Reduced -4.0k |
| Elmind Capital, LP 0.65% of their portfolio | 81.1k $2.6m | Added +22.9k |
| Quadrature Capital Ltd 0.02% of their portfolio | 73.9k $2.3m | Added +54.7k |
| Trexquant Investment LP 0.01% of their portfolio | 72.8k $2.3m | Added +52.2k |
| MANUFACTURERS LIFE INSURANCE COMPANY, THE 0.00% of their portfolio | 67.7k $2.2m | Reduced -8.8k |
| PUBLIC EMPLOYEES RETIREMENT SYSTEM OF OHIO 0.01% of their portfolio | 67.6k $2.1m | Added +36.3k |
| Persistent Asset Partners Ltd 0.65% of their portfolio | 65.2k $2.1m | Added +16.3k |
| Engineers Gate Manager LP 0.02% of their portfolio | 60.3k $1.9m | Added +46.4k |
| HRT FINANCIAL LP 0.00% of their portfolio | 56.8k $1.8m | Added +33.9k |
| J. Goldman & Co LP 0.06% of their portfolio | 53.4k $1.7m | Reduced -61.3k |
| ALPS ADVISORS INC 0.01% of their portfolio | 51.4k $1.6m | Added +10.2k |
| Susquehanna Portfolio Strategies, LLC 0.02% of their portfolio | 49.2k $1.6m | New |
| Hennion & Walsh Asset Management, Inc. 0.04% of their portfolio | 48.3k $1.5m | Added +1.2k |
| Eagle Health Investments LP 0.24% of their portfolio | 46.3k $1.5m | Unchanged |
| GEODE CAPITAL MANAGEMENT, LLC 0.00% of their portfolio | 46.0k $1.5m | Added +3.1k |
| HighVista Strategies LLC 0.31% of their portfolio | 43.2k $1.4m | Reduced -15.5k |
| Virtus Investment Advisers, LLC 0.30% of their portfolio | 40.2k $1.3m | Added +17.2k |
| COMMONWEALTH OF PENNSYLVANIA PUBLIC SCHOOL EMPLS RETRMT SYS 0.01% of their portfolio | 39.5k $1.3m | Added +7.9k |
| SEI INVESTMENTS CO 0.00% of their portfolio | 39.2k $1.2m | Reduced -22.0k |
| Bridgewater Associates, LP 0.00% of their portfolio | 36.7k $1.2m | Added +17.8k |
| Crossmark Global Holdings, Inc. 0.01% of their portfolio | 36.4k $1.2m | Reduced -41 |
| Brevan Howard Capital Management LP 0.02% of their portfolio | 34.5k $1.1m | Added +18.0k |
| State of New Jersey Common Pension Fund D 0.00% of their portfolio | 34.3k $1.1m | Added +6.6k |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP 0.00% of their portfolio | 34.2k $1.1m | Added +25.5k |
| NEW YORK STATE COMMON RETIREMENT FUND 0.00% of their portfolio | 34.0k $1.1m | Reduced -177.2k |
| Tidal Investments LLC 0.00% of their portfolio | 30.8k $979.5k | Added +198 |
| BARCLAYS PLC 0.00% of their portfolio | 29.5k $937.2k | Reduced -1.4k |
| EntryPoint Capital, LLC 0.18% of their portfolio | 22.8k $724.4k | New |
| Cinctive Capital Management LP 0.03% of their portfolio | 21.9k $695.5k | New |
| CITIGROUP INC 0.00% of their portfolio | 21.5k $683.1k | Added +17.0k |
| BNP PARIBAS FINANCIAL MARKETS 0.00% of their portfolio | 19.0k $603.2k | Added +2.1k |
| Aquatic Capital Management LLC 0.02% of their portfolio | 17.6k $558.3k | Added +16.5k |
| SUSQUEHANNA FUNDAMENTAL INVESTMENTS, LLC 0.01% of their portfolio | 17.0k $541.0k | New |
| Virtu Financial LLC 0.02% of their portfolio | 17.0k $539.0k | New |
| PSP Research LLC 0.26% of their portfolio | 15.1k $480.7k | Unchanged |
| UBS Group AG 0.00% of their portfolio | 13.1k $416.0k | Reduced -29.0k |
| Entropy Technologies, LP 0.02% of their portfolio | 12.7k $403.9k | Added +2.7k |
| Federation des caisses Desjardins du Quebec 0.00% of their portfolio | 12.7k $403.3k | Added +4.4k |
| Squarepoint Ops LLC 0.00% of their portfolio | 11.7k $372.9k | Reduced -3.7k |
| WELLS FARGO & COMPANY/MN 0.00% of their portfolio | 11.0k $349.9k | Reduced -64.5k |
| Banque Transatlantique SA 0.01% of their portfolio | 10.2k $322.4k | New |
| TrinityBridge Ltd 0.01% of their portfolio | 10.1k $321.0k | Unchanged |
| Headlands Technologies LLC 0.03% of their portfolio | 9.1k $289.8k | New |
| Scientech Research LLC 0.23% of their portfolio | 8.9k $281.1k | New |
| China Universal Asset Management Co., Ltd. 0.01% of their portfolio | 7.3k $231.0k | Reduced -3.5k |
| denkapparat Operations GmbH 0.07% of their portfolio | 6.6k $209.2k | New |
| State of Tennessee, Department of Treasury 0.00% of their portfolio | 6.4k $203.2k | New |
| RHUMBLINE ADVISERS 0.00% of their portfolio | 3.5k $112.4k | Added +444 |