IMCR · Immunocore Holdings plc

$36.32 -0.30 (-0.82%) At close · Aug 31

Market Cap

$1.89B

51.50M

Institutional ownership from SEC Form 13F filings. Investment managers with more than $100 million in U.S. equities must disclose their positions every quarter, within 45 days of quarter-end, so the holdings shown can lag the market by up to a quarter.

Quarter:

Holders: 136

Total Value: $1,676,599,016

Total Shares: 52,806,320

Showing 1–100 of 145 holdings by value · page 1 of 2

Institutional Ownership Trend

22 quarters

Superinvestors Holding IMCR

All superinvestors →

Ray Dalio $1,165,447

Holder Concentration

Across 136 13F filers · Δ vs Mar 31, 2026

Top Holder

10.8%

+1.9 pts

Top 5

40.4%

+1.9 pts

Top 10

57.7%

−1.5 pts

HHI

464

Broadly held+12

Quarterly Activity

vs Mar 31, 2026

New

Increased

Decreased

Sold Out

Unchanged

Holder count: -8

Institutional value: +2.5%

Shares held: -2.6%

Top Buyers

vs Mar 31, 2026

Institution	Added	Now Holds
Mega WELLINGTON MANAGEMENT GROUP LLP	+1,015,777	5,721,945
Large ACADIAN ASSET MANAGEMENT LLC	+708,803	1,209,894
Mega TWO SIGMA INVESTMENTS, LP	+627,718	1,648,983
Mid Kynam Capital Management, LP	+490,063	1,375,000
Mega CITADEL ADVISORS LLC	+411,662	651,961

Top Sellers

vs Mar 31, 2026

Institution	Sold	Now Holds
Mid Deep Track Capital, LP	−1,620,666	311,218
Large Caption Management, LLC	−1,528,683	405,603
Mid Vestal Point Capital, LP	−966,868	1,800,000
Mid Logos Global Management LP	−900,000	600,000
Mega FMR LLC	−521,908	4,307,246

Top New Positions

vs Mar 31, 2026

Institution	Acquired	Value (USD)
Mid Caligan Partners LP	1,381,317	$43,856,814
Mega Jupiter Topco LLC	709,022	$22,511,448
Mid BRAIDWELL LP	521,327	$16,552,132
Small Jones Hill Capital LP	512,856	$16,283,178
Small Fulcrum Asset Management LLP	470,025	$14,923,293

Top Sold-Out Positions

vs Mar 31, 2026

Institution	Previously Held	Last Value (USD)
Mega T. Rowe Price Investment Management, Inc.	1,891,600	$57,031,740
Large Fiera Capital Corp	1,080,099	$32,564,984
Large BAKER BROS. ADVISORS LP	734,397	$22,142,069
Mega JANUS HENDERSON GROUP PLC	594,712	$17,930,566
Large Aberdeen Group plc	116,857	$3,523,238

Filter: New 26 Increased 51 Reduced 41 Sold out 34 Unchanged 18

Showing 100 of 145

All Common Calls Puts

Compact Export CSV

Holder

Value (USD)

% of 13F

WELLINGTON MANAGEMENT GROUP LLP

$181,671,752

10.84%

5,721,945

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Wellington Management Company LLP	5,367,743	$170,425,840	93.8%	Defined
Wellington Management Singapore Pte. Ltd.	57,981	$1,840,896	1.0%	Defined
Wellington Management International Ltd	17,907	$568,547	0.3%	Defined
Wellington Trust Company, NA joint	273,479	$8,682,958	4.8%	Defined
Wellington Management Australia Pty Ltd	4,835	$153,511	0.1%	Defined

RTW INVESTMENTS, LP

$154,616,086

9.22%

4,869,798

FMR LLC

$136,755,060

8.16%

4,307,246

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Fidelity Management & Research Co LLC	2,843,976	$90,296,238	66.0%	Defined
FIDELITY MANAGEMENT TRUST CO	1,430,382	$45,414,628	33.2%	Defined
FIAM LLC	32,888	$1,044,194	0.8%	Defined

PRIMECAP MANAGEMENT CO/CA/

$115,514,151

6.89%

3,638,241

Bellevue Group AG

$88,526,778

5.28%

2,788,245

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
BB Biotech AG joint	2,788,245	$88,526,778	100.0%	Defined

TANG CAPITAL MANAGEMENT LLC

$84,117,434

5.02%

2,649,368

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
TANG KEVIN	2,649,368	$84,117,434	100.0%	Other

Vestal Point Capital, LP

$57,150,000

3.41%

1,800,000

TWO SIGMA INVESTMENTS, LP

$52,355,210

3.12%

1,648,983

MILLENNIUM MANAGEMENT LLC

$50,705,924

3.02%

1,597,037

ARMISTICE CAPITAL, LLC

$45,339,000

2.70%

1,428,000

Caligan Partners LP

$43,856,814

2.62%

1,381,317

Kynam Capital Management, LP

$43,656,250

2.60%

1,375,000

BVF INC/IL

$41,099,200

2.45%

1,294,463

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
BVF PARTNERS L P/IL	1,294,463	$41,099,200	100.0%	Defined

ACADIAN ASSET MANAGEMENT LLC

$38,414,134

2.29%

1,209,894

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Acadian Inc	1,209,894	$38,414,134	100.0%	Defined

Trails Edge Capital Partners, LP

$33,757,679

2.01%

1,063,234

BlackRock, Inc.

$31,895,984

1.90%

1,004,598

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
BLACKROCK FINANCIAL MANAGEMENT INC/DE	43,950	$1,395,412	4.4%	Sole
BlackRock Investment Management, LLC	11,435	$363,061	1.1%	Sole
BLACKROCK ADVISORS LLC	564,382	$17,919,128	56.2%	Sole
BlackRock Fund Advisors	319,380	$10,140,315	31.8%	Sole
BlackRock Investment Management (UK) Ltd.	25,832	$820,166	2.6%	Sole
BlackRock Asset Management Ireland Ltd	33,390	$1,060,132	3.3%	Sole
BlackRock (Luxembourg) S.A.	3,385	$107,473	0.3%	Sole
Aperio Group, LLC	2,844	$90,297	0.3%	Sole

Point72 Asset Management, L.P.

$31,441,390

1.88%

990,280

PRICE T ROWE ASSOCIATES INC /MD/

$26,386,409

1.57%

831,068

Jupiter Topco LLC

$22,511,448

1.34%

709,022

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
JANUS HENDERSON INVESTORS US LLC	709,022	$22,511,448	100.0%	Defined

Logos Global Management LP

$19,050,000

1.14%

600,000

MARSHALL WACE, LLP

$18,762,376

1.12%

590,941

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Marshall Wace North America L.P. joint	590,941	$18,762,376	100.0%	Other

Hudson Bay Capital Management LP

$18,732,500

1.12%

590,000

CITADEL ADVISORS LLC

$17,994,661

1.07%

566,761

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Citadel Securities GP LLC	126,725	$4,023,518	22.4%	Defined
Held directly	440,036	$13,971,143	77.6%	Defined

BRAIDWELL LP

$16,552,132

0.99%

521,327

Jones Hill Capital LP

$16,283,178

0.97%

512,856

PRINCIPAL FINANCIAL GROUP INC

$15,423,800

0.92%

485,789

Frazier Life Sciences Management, L.P.

$15,391,828

0.92%

484,782

Fulcrum Asset Management LLP

$14,923,293

0.89%

470,025

MASSACHUSETTS FINANCIAL SERVICES CO /MA/

$12,929,203

0.77%

407,219

D. E. Shaw & Co., Inc.

$12,862,433

0.77%

405,116

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
D. E. SHAW & CO, L.P.	405,116	$12,862,433	100.0%	Defined

Candriam S.C.A.

$11,844,210

0.71%

373,046

CANTOR FITZGERALD, L. P.

$10,798,175

0.64%

340,100

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Cantor Fitzgerald & Co.	340,100	$10,798,175	100.0%	Defined

Woodline Partners LP

$10,057,193

0.60%

316,762

Deep Track Capital, LP

$9,881,171

0.59%

311,218

Legal & General Group Plc

$9,514,522

0.57%

299,670

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Legal & General Investment Management Ltd	299,670	$9,514,522	100.0%	Defined

BOOTHBAY FUND MANAGEMENT, LLC

$9,383,585

0.56%

295,546

MOORE CAPITAL MANAGEMENT, LP

$8,720,550

0.52%

274,663

DIADEMA PARTNERS LP

$8,091,900

0.48%

254,863

JANE STREET GROUP, LLC

$7,408,798

0.44%

233,348

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Jane Street Capital, LLC	171,719	$5,452,078	73.6%	Defined
Jane Street Global Trading, LLC	61,629	$1,956,720	26.4%	Defined

Qube Research & Technologies Ltd

$7,084,187

0.42%

223,124

MORGAN STANLEY

$5,964,235

0.36%

187,850

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
MORGAN STANLEY & CO INTERNATIONAL PLC	2,590	$82,232	1.4%	Defined
MORGAN STANLEY & CO. LLC	9,148	$290,449	4.9%	Defined
MORGAN STANLEY CAPITAL SERVICES, LLC	163,532	$5,192,141	87.1%	Defined
MORGAN STANLEY SMITH BARNEY LLC	12,570	$399,096	6.7%	Defined
PARAMETRIC PORTFOLIO ASSOCIATES LLC	10	$317	0.0%	Defined

SUSQUEHANNA INTERNATIONAL GROUP, LLP

$5,889,625

0.35%

185,500

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
SUSQUEHANNA SECURITIES, LLC	185,500	$5,889,625	100.0%	Other

Caption Management, LLC

$5,495,925

0.33%

173,100

Caption Management, LLC

$5,476,970

0.33%

172,503

Catalio Capital Management, LP

$4,700,428

0.28%

148,045

GOLDMAN SACHS GROUP INC

$4,360,100

0.26%

137,326

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
GOLDMAN SACHS & CO. LLC	137,326	$4,360,100	100.0%	Defined

ARROWSTREET CAPITAL, LIMITED PARTNERSHIP

$4,259,738

0.25%

134,165

Jump Financial, LLC

$4,189,380

0.25%

131,949

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Jump Trading Holdings, LLC	249	$7,905	0.2%	Defined
Leap GP LLC joint	131,700	$4,181,475	99.8%	Defined

Y-Intercept (Hong Kong) Ltd

$4,021,201

0.24%

126,652

BANK OF AMERICA CORP /DE/

$3,687,572

0.22%

116,144

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
BANK OF AMERICA NA	116,144	$3,687,572	100.0%	Defined

XTX Topco Ltd

$3,687,286

0.22%

116,135

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
XTX EXECUTION SERVICES LLC joint	116,135	$3,687,286	100.0%	Defined

TD Asset Management Inc

$3,287,966

0.20%

103,558

RENAISSANCE TECHNOLOGIES LLC

$3,251,200

0.19%

102,400

STATE STREET CORP

$3,118,770

0.19%

98,229

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
SSGA FUNDS MANAGEMENT, INC. joint	98,229	$3,118,770	100.0%	Defined

BNP PARIBAS ASSET MANAGEMENT Holding S.A.

$2,887,630

0.17%

90,949

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
AXA INVESTMENT MANAGERS UK LIMITED	90,949	$2,887,630	100.0%	Defined

Elmind Capital, LP

$2,576,290

0.15%

81,143

Quadrature Capital Ltd

$2,347,214

0.14%

73,928

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Quadrature US Inc.	73,928	$2,347,214	100.0%	Other

Trexquant Investment LP

$2,312,860

0.14%

72,846

JANE STREET GROUP, LLC

$2,225,675

0.13%

70,100

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Jane Street Capital, LLC	70,100	$2,225,675	100.0%	Defined

MANUFACTURERS LIFE INSURANCE COMPANY, THE

$2,150,681

0.13%

67,738

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
MANULIFE FINANCIAL CORP joint	67,738	$2,150,681	100.0%	Defined

PUBLIC EMPLOYEES RETIREMENT SYSTEM OF OHIO

$2,144,966

0.13%

67,558

CITADEL ADVISORS LLC

$2,136,775

0.13%

67,300

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Citadel Securities GP LLC	67,300	$2,136,775	100.0%	Defined

Persistent Asset Partners Ltd

$2,070,544

0.12%

65,214

SUSQUEHANNA INTERNATIONAL GROUP, LLP

$2,070,100

0.12%

65,200

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
SUSQUEHANNA SECURITIES, LLC	65,200	$2,070,100	100.0%	Other

Engineers Gate Manager LP

$1,915,382

0.11%

60,327

Caption Management, LLC

$1,905,000

0.11%

60,000

HRT FINANCIAL LP

$1,802,987

0.11%

56,787

J. Goldman & Co LP

$1,696,402

0.10%

53,430

ALPS ADVISORS INC

$1,632,585

0.10%

51,420

Susquehanna Portfolio Strategies, LLC

$1,561,433

0.09%

49,179

Hennion & Walsh Asset Management, Inc.

$1,534,287

0.09%

48,324

Eagle Health Investments LP

$1,470,025

0.09%

46,300

GEODE CAPITAL MANAGEMENT, LLC

$1,459,674

0.09%

45,974

HighVista Strategies LLC

$1,371,123

0.08%

43,185

Virtus Investment Advisers, LLC

$1,274,921

0.08%

40,155

COMMONWEALTH OF PENNSYLVANIA PUBLIC SCHOOL EMPLS RETRMT SYS

$1,255,141

0.07%

39,532

SEI INVESTMENTS CO

$1,245,012

0.07%

39,213

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
SEI INVESTMENTS MANAGEMENT CORP	24	$762	0.1%	Sole
SEI TRUST CO	39,189	$1,244,250	99.9%	Sole

Bridgewater Associates, LP

$1,165,447

0.07%

36,707

Crossmark Global Holdings, Inc.

$1,156,208

0.07%

36,416

Brevan Howard Capital Management LP

$1,093,787

0.07%

34,450

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Brevan Howard Investment Products Ltd	34,450	$1,093,787	100.0%	Defined

State of New Jersey Common Pension Fund D

$1,088,231

0.06%

34,275

SUSQUEHANNA INTERNATIONAL GROUP, LLP

$1,084,897

0.06%

34,170

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
SUSQUEHANNA SECURITIES, LLC	34,170	$1,084,897	100.0%	Other

NEW YORK STATE COMMON RETIREMENT FUND

$1,078,928

0.06%

33,982

Tidal Investments LLC

$979,455

0.06%

30,849

CITIGROUP INC

$952,500

0.06%

30,000

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Citigroup Financial Products Inc. joint	30,000	$952,500	100.0%	Defined

CITIGROUP INC

$952,500

0.06%

30,000

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Citigroup Financial Products Inc. joint	30,000	$952,500	100.0%	Defined

BARCLAYS PLC

$937,164

0.06%

29,517

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
BARCLAYS BANK PLC	29,517	$937,164	100.0%	Defined

EntryPoint Capital, LLC

$724,376

0.04%

22,815

Cinctive Capital Management LP

$695,452

0.04%

21,904

CITIGROUP INC

$683,069

0.04%

21,514

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Citigroup Financial Products Inc. joint	21,514	$683,069	100.0%	Defined

BNP PARIBAS ARBITRAGE, SA

$603,218

0.04%

18,999

CITADEL ADVISORS LLC

$568,325

0.03%

17,900

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Citadel Securities GP LLC	17,900	$568,325	100.0%	Defined

Aquatic Capital Management LLC

$558,260

0.03%

17,583

SUSQUEHANNA FUNDAMENTAL INVESTMENTS, LLC

$540,988

0.03%

17,039

Virtu Financial LLC

$538,734

0.03%

16,968

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Virtu Americas LLC	16,968	$538,734	100.0%	Defined

PSP Research LLC

$480,726

0.03%

15,141

UBS Group AG

$415,956

0.02%

13,101

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
UBS Financial Services Inc	420	$13,335	3.2%	Defined
UBS AG	12,681	$402,621	96.8%	Defined

Entropy Technologies, LP

$403,860

0.02%

12,720

Federation des caisses Desjardins du Quebec

$403,542

0.02%

12,710

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Regime de rentes du Mouvement Desjardins	12,710	$403,542	100.0%	Defined

Squarepoint Ops LLC

$372,935

0.02%

11,746

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Squarepoint Capital LLP	11,746	$372,935	100.0%	Defined

Key facts CIK 1671927 CUSIP 45258D105 13F (30d) 121 filings 115 filers Visit website Investor relations