STATE STREET CORP

Position in KRRO — Korro Bio, Inc.

CIK 93751 BOSTON, MA

Position in KRRO

as of Mar 31, 2026 · filed May 15, 2026 Compact

Position Value

$1,588,660

+$417,430 QoQ

Shares Held

140,341

-4.0% QoQ

Ownership

0.973%

of shares outstanding

% of Portfolio

0.00%

of 13F equity value

Holder Rank

—

not a current holder

Holding Since

Dec 2023

10 quarters on record

Voting authority Sole 32.89345237671101.ToString("F0")% Shared 0.ToString("F0")% None 67.10654762328899.ToString("F0")%

Healthcare · as of Mar 31, 2026

STATE STREET CORP holds $30,287,966,567 across 421 Biotechnology names. KRRO ranks #246 (0.0% of the industry book) .

#	Ticker	Company	Shares	Value (USD)
1	VRTX	Vertex Pharmaceuticals Inc / Ma	11,730,139	$5,237,976,269
2	REGN	Regeneron Pharmaceuticals, Inc.	4,664,478	$3,603,962,281
3	ALNY	Alnylam Pharmaceuticals, Inc.	3,322,698	$1,099,381,087
4	INSM	INSMED Inc	5,551,699	$907,813,820
5	INCY	Incyte Corp	9,641,384	$907,447,062
6	MRNA	Moderna, Inc.	14,861,409	$754,959,577
7	RPRX	Royalty Pharma plc	10,989,851	$527,183,152
8	ROIV	Roivant Sciences Ltd.	16,186,613	$448,369,180

10 filing rows on record

Report Date	Value (USD)	Shares	Change	Type	Discretion	Filed
2026-03-31	$1,588,660	140,341	-4.0%	Shares	Defined	2026-05-15
2025-12-31	$1,171,230	146,221	+17.4%	Shares	Defined	2026-02-13
2025-09-30	$5,965,609	124,569	+2.2%	Shares	Defined	2025-11-14
2025-06-30	$1,523,030	121,940	-0.4%	Shares	Defined	2025-08-14
2025-03-31	$2,131,645	122,438	-1.3%	Shares	Defined	2025-05-15
2024-12-31	$4,723,687	124,079	+4.5%	Shares	Defined	2025-02-14
2024-09-30	$3,969,126	118,765	+18.9%	Shares	Defined	2024-11-14
2024-06-30	$3,383,206	99,888	+451.9%	Shares	Defined	2024-08-14
2024-03-31	$1,629,000	18,100	+223.2%	Shares	Defined	2024-05-15
2023-12-31	$268,408	5,600	—	Shares	Defined	2024-02-14
No filing history on record for this holder in this stock.