Company · Ownership research

Immunocore Holdings plc IMCR

CIK 0001671927 · CUSIP 45258D105

Insider tradingInitial holdingsInstitutional holders

Quarter-end disclosures, not live holdings.

Several CUSIPs are reported for this company; this page shows CUSIP 45258D105 (IMCR), not CUSIP 45258D955 (IMCR), CUSIP 45258D905 (IMCR), and does not merge CUSIPs.

This page lists the top 20 of 55 rows by value; the complete set is available through the API.

Some filings reported values in thousands; those figures were scaled ×1,000 to dollars.

Top 20 institutions

Weight means this stock's share of the manager's own portfolio.

By reported value

#	Manager	Value	Manager weight	Change vs prior	Source
01	PRIMECAP MANAGEMENT CO/CA/ CIK 763212 · View history	$110.13M 3,635,850 shares	0.07%	-2.39K(-0.10%)Reduced	SEC filing ↗ Nov 12, 2026	▾
02	ACADIAN ASSET MANAGEMENT LLC CIK 916542 · View history	$55.23M 1,824,455 shares	0.06%	+614.56K(+50.80%)Added	SEC filing ↗ Nov 9, 2026	▾
03	FMR LLC CIK 315066 · View history	$52.61M 1,736,979 shares	0.00%	-2.57M(-59.70%)Reduced	SEC filing ↗ Nov 10, 2026	▾
04	PRINCIPAL FINANCIAL GROUP INC CIK 1126328 · View history	$12.94M 427,291 shares	0.01%	-58.50K(-12.00%)Reduced	SEC filing ↗ Nov 2, 2026	▾
05	MASSACHUSETTS FINANCIAL SERVICES CO /MA/ CIK 912938 · View history	$12.10M 399,458 shares	0.00%	-7.76K(-1.90%)Reduced	SEC filing ↗ Nov 12, 2026	▾
06	Candriam S.C.A. CIK 1537014 · View history	$11.14M 366,492 shares	0.05%	-6.55K(-1.80%)Reduced	SEC filing ↗ Nov 3, 2026	▾
07	UBS Group AG CIK 1610520 · View history	$8.74M 288,550 shares	0.00%	+275.45K(+2,102.50%)Added	SEC filing ↗ Nov 10, 2026	▾
08	RENAISSANCE TECHNOLOGIES LLC CIK 1037389 · View history	$8.09M 267,200 shares	0.01%	+164.80K(+160.90%)Added	SEC filing ↗ Nov 12, 2026	▾
09	JANE STREET GROUP, LLC CIK 1595888 · View history	$6.43M 212,125 shares	0.01%	-21.22K(-9.10%)Reduced	SEC filing ↗ Nov 12, 2026	▾
10	Fulcrum Asset Management LLP CIK 1353395 · View history	$3.58M 116,000 shares	0.17%	-354.02K(-75.30%)Reduced	SEC filing ↗ Nov 4, 2026	▾
11	STATE STREET CORP CIK 93751 · View history	$3.22M 106,410 shares	0.00%	+8.18K(+8.30%)Added	SEC filing ↗ Nov 12, 2026	▾
12	Y-Intercept (Hong Kong) Ltd CIK 1772875 · View history	$2.95M 97,515 shares	0.07%	-29.14K(-23.00%)Reduced	SEC filing ↗ Oct 16, 2026	▾
13	JPMORGAN CHASE & CO CIK 19617 · View history	$2.55M 82,507 shares	0.00%	+79.09K(+2,316.00%)Added	SEC filing ↗ Nov 12, 2026	▾
14	SEI INVESTMENTS CO CIK 350894 · View history	$2.25M 74,223 shares	0.00%	+35.01K(+89.30%)Added	SEC filing ↗ Nov 10, 2026	▾
15	ALPS ADVISORS INC CIK 1376113 · View history	$2.07M 68,246 shares	0.01%	+16.83K(+32.70%)Added	SEC filing ↗ Nov 3, 2026	▾
16	BNP PARIBAS FINANCIAL MARKETS CIK 1166588 · View history	$1.79M 58,968 shares	0.00%	+39.97K(+210.40%)Added	SEC filing ↗ Nov 12, 2026	▾
17	Virtus Investment Advisers, LLC CIK 19481 · View history	$1.76M 58,201 shares	0.39%	+18.05K(+44.90%)Added	SEC filing ↗ Nov 12, 2026	▾
18	COMMONWEALTH OF PENNSYLVANIA PUBLIC SCHOOL EMPLS RETRMT SYS CIK 1083190 · View history	$1.59M 52,481 shares	0.01%	+12.95K(+32.80%)Added	SEC filing ↗ Nov 3, 2026	▾
19	GEODE CAPITAL MANAGEMENT, LLC CIK 1214717 · View history	$1.57M 51,840 shares	0.00%	+5.87K(+12.80%)Added	SEC filing ↗ Nov 6, 2026	▾
20	Hennion & Walsh Asset Management, Inc. CIK 1861642 · View history	$1.36M 44,878 shares	0.04%	-3.45K(-7.10%)Reduced	SEC filing ↗ Oct 13, 2026	▾

Showing 20 / 55 institutions. The complete set is available through the API.

Coverage & totals by quarter

Reporting institutions

Cancelled or null records excluded

Disclosed shares

10,175,811

Not deduplicated across managers

Disclosed value

$308.36M

Not market cap or free float

Reporting institutions by quarter

Counts also change with data coverage and reporting entities; they do not measure net buying. Distinct managers with a live stock row in this CUSIP; totals may include overlapping filings and are not a share of the company.

Immunocore Holdings plc · Q3 2026

Explore all 55 reporting institutions.

This page includes 20 of 55 reporting institutions. Log in to look up the full history beyond 3 years, use advanced screening & filtering, download CSV, and get the complete set through the Akkru API.

Download CSV
Earlier quarters
Advanced screening & filtering
API & AI access

Already have an account?

＋ New accounts get free API credits to explore data beyond ownership filings.

For AI agents & developers

The initial HTML of this page carries its exact data as script#research-data (JSON): values, units, scope, preview limits and SEC sources. Read it directly, no script or API key needed; script#research-access says what needs an account. This page lists 20 of 55 reporting institutions; totals use the complete disclosed data.

Without an account: the last 3 years, with the row caps stated on the page. A free account opens all history on file on these pages and the CSV of what a page shows. Rows beyond the caps and bulk retrieval go through the authenticated API / MCP / CLI.

MCP  https://api.akkrudata.ai/mcp

akkru_institutional_holdings
{"action":"holders","cusip":"45258D105","quarter":"2026Q3","type":"positions","page_size":100}

Connect to MCP with OAuth and follow the returned pagination. Credits and usage limits depend on the account.

MCP endpoint: https://api.akkrudata.ai/mcp
API / MCP / CLI documentation: /documents
llms.txt: /llms.txt

Sources, coverage & how to read this data

Figures are as reported to the SEC and merged with later amendments where Akkru could match them. Preview limits apply to what is listed, not to the totals, which come from the complete reported data. Nothing is zero-filled: a missing quarter or month is shown as missing.