What does CUSIP 45258D105 represent in this 13F holders report?

CUSIP 45258D105 is the security identifier for IMCR - Immunocore Holdings plc - COMMON STOCK used to aggregate holder disclosures.

How many institutions held IMCR - Immunocore Holdings plc - COMMON STOCK in Q1 2023?

108 institutional investors reported IMCR - Immunocore Holdings plc - COMMON STOCK for Q1 2023. Use the holders table for investor-level position and value details.

Immunocore Holdings plc - COMMON STOCK (IMCR)

CUSIP: 45258D105

Q1 2023 13F Holders as of 31 Mar 2023

Security type / class: Equity / COMMON STOCK
Total 13F shares: 32,689,414
Total 13F value: $1,614,615,481
Share change: +2,436,785
Put/Call ratio: 17%
SEC-reported price per share: $49.44
Number of holders: 108
Value change: +$118,700,415
Number of buys: 54
Number of sells: 48
Shares outstanding: 48,249,417

Security key

45258D105

Report period

Q1 2023

Institutions

108

Top holders

IMCR full security history Ownership snapshot Full 13F holder table Newer quarter: Q3 2026 Immunocore Holdings plc SEC filings Immunocore Holdings plc company facts

Broader feeds

Latest 13F filings Latest 13D/G filings Investors directory

Reporting periods

Holder history for CUSIP 45258D105

Newer quarter: Q3 2026

Recent filing periods:

Q3 2026

Ownership snapshot

Top reported holders of IMCR - Immunocore Holdings plc - COMMON STOCK (13F + 13D/G + 3/4/5)

Grouped by holder across the latest SEC ownership disclosures. Start with comparable ownership when available, then verify the linked 13F, 13D/G, or 3/4/5 evidence.

Comparable stake leader

RTW INVESTMENTS, LP

Disclosed value leader

RTW INVESTMENTS, LP

Comparable rows

0/15

Latest evidence

31 Dec 2022

13F Highest disclosed value: $317,270,507 15 rows are not safely comparable across share classes. Showing 1-6 of 15 holder rows.

Quick read

RTW INVESTMENTS, LP has the largest disclosed position value at $317.27M.

0 of 15 rows have a safely comparable ownership percentage. Use this as a filing-backed starting point, then open the detailed table for source links, reporting role, position value, share count, and filing date.

Open SEC evidence Opens RTW INVESTMENTS, LP's linked filing trail.

Disclosed position value Top 5

RTW INVESTMENTS, LP $317.27M

Rock Springs Capital Management LP $189.53M

BAKER BROS. ADVISORS LP $143.86M

WELLINGTON MANAGEMENT GROUP LLP $122.87M

FMR LLC $114.36M

Value bars compare disclosed positions; verify each figure against the linked filing evidence.

Detailed SEC evidence table Showing 1-6 of 15 holder rows

Holder	Evidence	Ownership %	Position	12M Net Δ	As of
RTW INVESTMENTS, LP	13F Company 13F	— denominator unverified	$317,270,507 5,559,322 shares	—	31 Dec 2022
Rock Springs Capital Management LP	13F Company 13F	— denominator unverified	$189,533,237 3,321,066 shares	—	31 Dec 2022
BAKER BROS. ADVISORS LP	13F Company 13F	— denominator unverified	$143,858,118 2,520,731 shares	—	31 Dec 2022
WELLINGTON MANAGEMENT GROUP LLP	13F Company 13F	— denominator unverified	$122,869,769 2,152,966 shares	—	31 Dec 2022
FMR LLC	13F Company 13F	— denominator unverified	$114,363,314 2,003,913 shares	—	31 Dec 2022
PRICE T ROWE ASSOCIATES INC /MD/	13F Company 13F	— denominator unverified	$76,127,000 1,333,916 shares	—	31 Dec 2022

How to read this table

Rows are grouped by holder and ranked first by SEC-reported ownership % when it is safely comparable, then by disclosed holdings value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.

13F holder rows

Institutional holders as of Q1 2023

Investor-level positions for this CUSIP, loaded as an interactive table.

Institutions

108

32,689,414

Rows available

108

Investor	Option	Weight %	Change %	SEC-reported value	* Price	Shares	Share Change	Activity	Report Period

^* SEC-reported price is the security price as of the portfolio date and can indicate the last known price at which the security was still held. The marker flags a reported price that did not pass the local price check.

Compare Q1 2023 vs Q1 2023 Across Filers

Q1 2023 holders

108

Q1 2023 holders

108

Holder diff

Investor	Q1 2023 Shares	Q1 2023 Shares	Share Diff	Share Chg %	Q1 2023 value	Q1 2023 value	Value change	Value Chg %

Trend: ostatnie 8 kwartałów (+ wybrane okresy porównania).

Quarterly Holders Trend

Quarterly Value Trend

Quarterly Shares Trend