Immunocore Holdings plc (IMCR) Ownership
IMCR ownership summary
as of October 18, 2026- Institutions
- 103.2% of shares outstanding
- Insiders
- 0.07% of shares outstanding
- Shares outstanding
- 51.5M
- Float
- 45.8M shares available to trade
- Short interest
- 17.05% 7.9M shares short
- Days to cover
- 20.72 short interest up 1.7% vs prior month
- Institutions 103.20%
- Insiders 0.07%
IMCR top institutional holders
20 largest| # | Holder | % of shares | Shares | Value | Change | Reported |
|---|---|---|---|---|---|---|
| 1 | Wellington Management Company LLP | 11.11% | 5.7M | $168.2M | +1.0M (+21.6%) | June 30, 2026 |
| 2 | RTW INVESTMENTS, LLC | 9.46% | 4.9M | $143.2M | — | June 30, 2026 |
| 3 | FMR Inc | 8.36% | 4.3M | $126.6M | −521,908 (−10.8%) | June 30, 2026 |
| 4 | PRIMECAP Management Company | 7.06% | 3.6M | $107.0M | −55,000 (−1.5%) | June 30, 2026 |
| 5 | Bellevue Group AG | 5.41% | 2.8M | $82.0M | −8,558 (−0.3%) | June 30, 2026 |
| 6 | TANG CAPITAL MANAGEMENT LLC | 5.14% | 2.6M | $77.9M | — | June 30, 2026 |
| 7 | Vestal Point Capital LP | 3.50% | 1.8M | $52.9M | −966,868 (−34.9%) | June 30, 2026 |
| 8 | Two Sigma Investments LLC | 3.20% | 1.6M | $48.5M | +627,718 (+61.5%) | June 30, 2026 |
| 9 | Millennium Management LLC | 3.10% | 1.6M | $47.0M | +359,634 (+29.1%) | June 30, 2026 |
| 10 | Armistice Capital, LLC | 2.77% | 1.4M | $42.0M | +240,000 (+20.2%) | June 30, 2026 |
| 11 | Caligan Partners LP | 2.68% | 1.4M | $40.6M | +1.4M (0.0%) | June 30, 2026 |
| 12 | Kynam Capital Management, LP | 2.67% | 1.4M | $40.4M | +490,063 (+55.4%) | June 30, 2026 |
| 13 | Bvf Inc | 2.51% | 1.3M | $38.1M | — | June 30, 2026 |
| 14 | Acadian Asset Management LLC | 2.35% | 1.2M | $35.6M | +708,803 (+141.5%) | June 30, 2026 |
| 15 | Trails Edge Capital Partners, LP | 2.06% | 1.1M | $31.3M | +380,637 (+55.8%) | June 30, 2026 |
| 16 | BlackRock Inc | 1.95% | 1.0M | $29.5M | +348,289 (+53.1%) | June 30, 2026 |
| 17 | Point72 Asset Management, L.P. | 1.92% | 990K | $29.1M | −111,991 (−10.2%) | June 30, 2026 |
| 18 | T. Rowe Price Associates, Inc. | 1.61% | 831K | $24.4M | −88,264 (−9.6%) | June 30, 2026 |
| 19 | Jupiter Topco LLC | 1.38% | 709K | $20.8M | +709,022 (0.0%) | June 30, 2026 |
| 20 | CANTOR FITZGERALD, L. P. | 1.32% | 680K | $20.0M | +429,989 (+171.9%) | June 30, 2026 |
Value at the latest close. Change = shares bought or sold in the latest quarterly filing (13F). In the top 20, 11 holders added 6.7M shares and 6 cut 1.8M.
IMCR top mutual fund and ETF holders
20 largest| # | Holder | % of shares | Shares | Value | Change | Reported |
|---|---|---|---|---|---|---|
| 1 | Vanguard Health Care Inv | 8.25% | 4.2M | $124.8M | +588,466 (+16.1%) | June 30, 2026 |
| 2 | Vanguard Capital Opportunity Inv | 4.54% | 2.3M | $68.7M | — | June 30, 2026 |
| 3 | PRIMECAP Odyssey Aggressive Growth | 2.16% | 1.1M | $32.7M | −30,000 (−2.6%) | June 30, 2026 |
| 4 | Fidelity Growth Company Fund | 1.23% | 636K | $18.7M | −220,800 (−25.8%) | August 31, 2026 |
| 5 | T. Rowe Price Health Sciences | 1.04% | 537K | $15.8M | −108,600 (−16.8%) | August 31, 2026 |
| 6 | Fidelity Select Health Care | 0.97% | 500K | $14.7M | — | August 31, 2026 |
| 7 | BlackRock Health Sciences Term Trust | 0.70% | 359K | $10.6M | +321,900 (+864.7%) | June 30, 2026 |
| 8 | iShares Biotechnology ETF | 0.69% | 354K | $10.4M | −2,680 (−0.8%) | September 30, 2026 |
| 9 | MFS New Discovery I | 0.59% | 304K | $8.9M | — | August 31, 2026 |
| 10 | Fidelity Select Biotechnology | 0.56% | 287K | $8.4M | — | August 31, 2026 |
| 11 | Belfius Equities Cure C Cap | 0.52% | 270K | $7.9M | — | March 31, 2026 |
| 12 | Fidelity Advisor Health Care I | 0.50% | 260K | $7.6M | — | August 31, 2026 |
| 13 | Undly L&G Future World UK Eq Idx Fd | 0.44% | 226K | $6.6M | +101,257 (+81.4%) | June 30, 2026 |
| 14 | BlackRock Health Sciences Opps Inv A | 0.37% | 189K | $5.5M | — | August 31, 2026 |
| 15 | Principal SmallCap R5 | 0.35% | 178K | $5.2M | −39,756 (−18.2%) | August 31, 2026 |
| 16 | Wellington Global Hlthcr Eq USD G Ac | 0.35% | 178K | $5.2M | −15,873 (−8.2%) | August 31, 2026 |
| 17 | Fidelity Growth Company K6 | 0.32% | 165K | $4.8M | −72,000 (−30.4%) | August 31, 2026 |
| 18 | Old Westbury Small & Mid Cap Strategies | 0.31% | 160K | $4.7M | +124,386 (+350.4%) | July 31, 2026 |
| 19 | Fidelity Capital Appreciation | 0.31% | 159K | $4.7M | — | August 31, 2026 |
| 20 | Rhenman Healthcare Equity L/S RC2 SEK | 0.30% | 153K | $4.5M | — | January 31, 2026 |
Funds report holdings monthly or quarterly; dates differ by fund.
IMCR insider transactions
latest 6| Date | Name | Transaction | Price | Shares | Value |
|---|---|---|---|---|---|
| 2026-02-18 | Bahija Jallal | Sell | $32.35 | 11,474 | $371,184 |
| 2026-02-18 | David M Berman | Sell | $32.35 | 5,965 | $192,968 |
| 2026-02-18 | John Goll | Sell | $32.35 | 698 | $22,580 |
| 2026-02-18 | Leger Tina Amber St | Sell | $32.35 | 1,000 | $32,350 |
| 2025-09-15 | David M Berman | Sell | $35.01 | 200 | $7,002 |
| 2025-09-12 | David M Berman | Sell | $35.67 | 22,532 | $803,716 |
Reported trades by company officers, directors and other filers (including disclosures by members of Congress where EODHD lists them). "—" where the filing gives no share count.
IMCR shares outstanding
Year-end shares outstanding, adjusted for splits.
Who owns IMCR
Institutional investors own 103.2% of Immunocore's shares and insiders 0.07%. The largest holder is Wellington Management Company LLP with 11.11% of the shares (5.7M), as of June 30, 2026. Among the top 20 institutions, 11 added shares and 6 reduced their stake in the latest filings. Short interest is 17.05% of the float, or 20.72 days of average trading volume. The share count rose 84.4% since 2019.
Related: IMCR analyst forecast, IMCR key metrics. See the IMCR stock overview for the latest quote and news.
IMCR ownership FAQ
Who owns the most Immunocore stock?
The largest shareholders of Immunocore are Wellington Management Company LLP (11.11%), RTW INVESTMENTS, LLC (9.46%), FMR Inc (8.36%), PRIMECAP Management Company (7.06%), Bellevue Group AG (5.41%).
What percentage of Immunocore is owned by institutions?
Institutions hold 103.2% of Immunocore's shares outstanding; insiders hold 0.07%.
Which funds own Immunocore?
The largest fund holders of Immunocore are Vanguard Health Care Inv (8.25%), Vanguard Capital Opportunity Inv (4.54%), PRIMECAP Odyssey Aggressive Growth (2.16%), Fidelity Growth Company Fund (1.23%), T. Rowe Price Health Sciences (1.04%).
What is Immunocore's short interest?
7.9M shares of Immunocore were sold short, 17.05% of the float; at the average daily volume it would take 20.72 days to cover.
Are insiders buying or selling Immunocore?
Of the latest 6 reported insider transactions in Immunocore (since September 12, 2025), 0 were purchases and 6 were sales.
How many shares of Immunocore are outstanding?
Immunocore has 51.5M shares outstanding, of which 45.8M are in the public float.