13F reference period
Q2 2026
CUSIP: 45258D105
13F reference period
Q2 2026
Institutions Reporting
135
Shares (Excl. Options)
52,107,162
Price
$31.75
The headline uses the Q2 2026 reference period after its reporting deadline. Available reports may still be incomplete or amended. Newer periods in the history table contain incoming reports and may be incomplete.
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Latest holder context comes from 135 institutions filings for Q2 2026.
Security key
45258D105
13F reference period
Q2 2026
13F holders
135
13D/G owners
8
CIK / CUSIP context first
Broader feeds
Open recent reporting periods for CUSIP 45258D105:
13D/G owners
Large-stake holder rows connected to Schedule 13D/G evidence.
| Filer | Ownership | Change % | Holdings Value | Net Change | Nb Shares | Change % | Reporting Name | Report Period |
|---|---|---|---|---|---|---|---|---|
| WELLINGTON MANAGEMENT GROUP LLP | 12% | +14% | $190,355,150 | +$26,410,388 | 5,959,773 | +16% | Wellington Management Group LLP | 30 Jun 2026 |
| Jallal Bahija | 8.2% | $135,513,072 | 4,493,139 | Jallal Bahija | 31 Dec 2024 | |||
| PRIMECAP MANAGEMENT CO/CA/ | 7.5% | +44% | $130,443,852 | +$38,165,393 | 3,772,234 | +41% | PRIMECAP MANAGEMENT CO/CA/ | 30 Jun 2025 |
| Bellevue Group AG | 5.6% | $101,607,853 | 2,796,803 | Bellevue Group AG | 20 Aug 2025 | |||
| TANG CAPITAL MANAGEMENT LLC | 5.2% | $94,662,520 | 2,605,608 | TANG CAPITAL MANAGEMENT, LLC | 17 Oct 2025 | |||
| T. Rowe Price Investment Management, Inc. | 3.7% | -38% | $60,417,704 | -$36,740,710 | 1,891,600 | -38% | T. Rowe Price Investment Management, Inc. | 31 Mar 2026 |
| Vestal Point Capital, LP | 3.5% | -33% | $57,492,000 | -$30,881,764 | 1,800,000 | -35% | Vestal Point Capital, LP | 30 Jun 2026 |
| FMR LLC | 3.6% | -58% | $52,613,094 | -$77,853,387 | 1,736,979 | -60% | FMR LLC | 30 Sep 2026 |
As of 30 Jun 2026, 135 institutional investors reported holding 52,107,162 shares of Immunocore Holdings plc - COMMON STOCK (IMCR). This represents 108% of the company’s total 48,249,417 outstanding shares.
13F concentration
Largest 13F positions for this security by reported shares and value.
| Institution | Ownership % | Shares Held | Share Change % | Portfolio % | Holdings Value |
|---|---|---|---|---|---|
| WELLINGTON MANAGEMENT GROUP LLP | 12% | 5,721,945 | +22% | 0.03% | $181,671,753 |
| RTW INVESTMENTS, LP | 10% | 4,869,798 | 0% | 1.3% | $154,616,087 |
| FMR LLC | 8.9% | 4,307,246 | -11% | 0.01% | $136,755,061 |
| PRIMECAP MANAGEMENT CO/CA/ | 7.5% | 3,638,241 | -1.5% | 0.07% | $115,514,154 |
| Bellevue Group AG | 5.8% | 2,788,245 | -0.31% | 1.9% | $88,526,779 |
| TANG CAPITAL MANAGEMENT LLC | 5.5% | 2,649,368 | 0% | 3.8% | $84,117,434 |
| Vestal Point Capital, LP | 3.7% | 1,800,000 | -35% | 1.3% | $57,150,000 |
| TWO SIGMA INVESTMENTS, LP | 3.4% | 1,648,983 | +61% | 0.04% | $52,355,210 |
| MILLENNIUM MANAGEMENT LLC | 3.3% | 1,597,037 | +29% | 0.03% | $50,705,925 |
| ARMISTICE CAPITAL, LLC | 3% | 1,428,000 | +20% | 1.3% | $45,339,000 |
| Caligan Partners LP | 2.9% | 1,381,317 | 2.1% | $43,856,815 | |
| Kynam Capital Management, LP | 2.8% | 1,375,000 | +55% | 2.4% | $43,656,250 |
| BVF INC/IL | 2.7% | 1,294,463 | 0% | 1.1% | $41,099,200 |
| ACADIAN ASSET MANAGEMENT LLC | 2.5% | 1,209,894 | +141% | 0.05% | $38,391,000 |
| Trails Edge Capital Partners, LP | 2.2% | 1,063,234 | +56% | 5.4% | $33,757,680 |
| BlackRock, Inc. | 2.1% | 1,004,598 | +53% | 0% | $31,895,988 |
| Point72 Asset Management, L.P. | 2.1% | 990,280 | -10% | 0.05% | $31,441,390 |
| PRICE T ROWE ASSOCIATES INC /MD/ | 1.7% | 831,068 | -9.6% | 0% | $26,387,000 |
| Jupiter Topco LLC | 1.5% | 709,022 | 0% | 0.01% | $22,504,358 |
| Logos Global Management LP | 1.2% | 600,000 | -60% | 0.82% | $19,050,000 |
| MARSHALL WACE, LLP | 1.2% | 590,941 | +228% | 0.02% | $18,762,377 |
| Hudson Bay Capital Management LP | 1.2% | 590,000 | -6.8% | 0.09% | $18,732,500 |
| CITADEL ADVISORS LLC | 1.2% | 566,761 | +146% | 0.01% | $17,994,662 |
| BRAIDWELL LP | 1.1% | 521,327 | 0.61% | $16,552,132 | |
| Jones Hill Capital LP | 1.1% | 512,856 | 3.5% | $16,283,178 |
Quarter history
Holder count, reported shares/value, and median price by quarter.
| Period | 13F Shares, Excl. Options | Value, Excl. Options | Value Change | Price (Median) | Investors |
|---|---|---|---|---|---|
| 2026 Q3 | 203,502 | $6,164,076 | -$983,986 | $30.29 | 12 |
| 2026 Q2 | 52,107,162 | $1,653,706,045 | -$5,980,190 | $31.75 | 135 |
| 2026 Q1 | 52,393,743 | $1,579,585,800 | +$22,621,289 | $30.15 | 142 |
| 2025 Q4 | 51,535,356 | $1,787,298,986 | +$61,545,552 | $34.71 | 149 |
| 2025 Q3 | 49,181,489 | $1,786,701,511 | +$50,897,730 | $36.33 | 132 |
| 2025 Q2 | 47,759,431 | $1,498,675,257 | +$17,984,702 | $31.38 | 132 |
| 2025 Q1 | 47,287,653 | $1,402,998,400 | +$60,274,148 | $29.67 | 115 |
| 2024 Q4 | 45,410,647 | $1,339,563,608 | -$4,915,367 | $29.50 | 114 |
| 2024 Q3 | 45,295,985 | $1,411,075,539 | +$61,107,953 | $31.13 | 129 |
| 2024 Q2 | 43,068,701 | $1,459,854,294 | -$99,787,937 | $33.89 | 135 |
| 2024 Q1 | 41,233,666 | $2,679,814,816 | +$238,809,048 | $65.00 | 149 |
| 2023 Q4 | 37,514,062 | $2,563,043,022 | +$32,940,976 | $68.32 | 133 |
| 2023 Q3 | 36,945,020 | $1,917,423,501 | +$85,494,203 | $51.90 | 125 |
| 2023 Q2 | 35,306,138 | $2,115,733,529 | +$164,020,008 | $59.96 | 118 |
| 2023 Q1 | 32,689,414 | $1,614,615,481 | +$118,700,415 | $49.44 | 108 |
| 2022 Q4 | 30,264,419 | $1,727,211,273 | +$217,928,825 | $57.07 | 103 |
| 2022 Q3 | 26,369,515 | $1,237,624,033 | +$261,557,875 | $46.94 | 83 |
| 2022 Q2 | 21,039,614 | $784,510,369 | +$56,584,747 | $37.31 | 66 |
| 2022 Q1 | 19,740,280 | $590,138,252 | +$57,754,634 | $29.90 | 57 |
| 2021 Q4 | 17,133,052 | $586,618,000 | +$22,048,655 | $34.24 | 45 |
| 2021 Q3 | 16,654,128 | $617,381,000 | +$83,084,443 | $37.07 | 46 |
| 2021 Q2 | 13,805,464 | $538,109,000 | +$10,183,214 | $39.05 | 41 |
| 2021 Q1 | 14,110,965 | $597,836,000 | +$597,835,003 | $42.57 | 41 |