Korro Bio KRRO Institutional Ownership

NASDAQ KRRO

$12.85 -0.08 (-0.62%)

As of: Sep 10, 2026 · 1:35 PM EDT

Institutions by Trading Activity

106 Institutions

Increased 66 62.3%

Unchanged 20 18.9%

Reduced 20 18.9%

Ownership Statistics

13F · as of 30 Jun, 2026

Institutional Ownership

79.72%

▼-29.71 pp QoQ

Shares Held by Institutions

14.05Mn

of 17.62Mn outstanding

▲+12.05% QoQ

Shares Outstanding

17.62Mn

3.57Mn held outside 13F filers

Institutional Investors

106

filed 13F for Jun 2026

▲+8 vs prior quarter

Net Shares Added (QoQ)

+1.51Mn

accumulated since last quarter

Value of Holdings

$171.91Mn

reported market value

Shares Owned by Institutions

Shares held % of outstanding

Latest —

Average ownership —

Peak ownership —

Shares Purchased/Sold by Institutions

Accumulated Distributed

Latest quarter —

Net over range —

Accumulating quarters —

Ownership Summary

Quarter ending 30 Jun, 2026

Korro Bio, Inc. (NASDAQ:KRRO) is held by 106 institutional investors per 13F filings through June 2026.

These investors held 79.7% of outstanding shares in June 2026, down from 109.4% in March 2026.
They increased total shares held in Korro Bio by 12.05% from last quarter, and the number of investors in KRRO increased 53.62% annually.
Of these 106 funds, 66 grew their exposure to Korro Bio, 20 cut back, and 20 maintained positions.
The aggregate institutional position in Korro Bio amounted to 14.05Mn shares as of June 2026, up by 1.51Mn shares quarter on quarter, and up 5.42Mn shares year over year.
Lynx1 Capital Management LP is the top holder of Korro Bio as of June 30, 2026, with 1.54Mn shares representing 8.73% of outstanding stock.
The biggest buyers of Korro Bio for the quarter ending June 2026 included BlackRock, Inc. (357.62K), ADAGE CAPITAL PARTNERS GP, L.L.C. (312.57K), VANGUARD CAPITAL MANAGEMENT LLC (143.86K), GEODE CAPITAL MANAGEMENT, LLC (123.23K), State Street Corp (92.25K).
The largest sales of KRRO for the quarter ending June 2026 came from Atlas Venture Life Science Advisors, LLC (174.26K), BALYASNY ASSET MANAGEMENT L.P. (88.27K), Trexquant Investment LP (44.73K), ACADIAN ASSET MANAGEMENT LLC (27.34K), RENAISSANCE TECHNOLOGIES LLC (25.7K).
Korro Bio's 10 largest shareholders as of June 2026 include Lynx1 Capital Management LP (1.54Mn), NEA Management Company, LLC (1.3Mn), Venrock Adviser, LLC (1.01Mn), Atlas Venture Life Science Advisors, LLC (962.88K), BALYASNY ASSET MANAGEMENT L.P. (951.78K), BlackRock, Inc. (817.62K), Affinity Asset Advisors, LLC (706.9K), Nantahala Capital Management, LLC (660.04K), ADAGE CAPITAL PARTNERS GP, L.L.C. (540.97K), ADAR1 Capital Management, LLC (540.05K) per Business Quant data.

Form 13F Holdings

106 Institutional Holders

Report period 30 Jun, 2026

Total shares held 14.05Mn

Of outstanding 79.72%

#	Institution	CIK	Shares Held	% of Outstanding	Change (QoQ)	Change (%)	Value (USD)
1	Lynx1 Capital Management LP	0001910456	1,538,296	8.73%	0	0.00%	$20.27Mn
2	NEA Management Company, LLC	0001512848	1,297,893	7.37%	0	0.00%	$17.11Mn
3	Venrock Adviser, LLC	0001615982	1,009,500	5.73%	0	0.00%	$13.31Mn
4	Atlas Venture Life Science Advisors, LLC	0001917529	962,884	5.47%	▼174,265	-15.32%	$12.69Mn
5	BALYASNY ASSET MANAGEMENT L.P.	0001218710	951,783	5.40%	▼88,271	-8.49%	$12.54Mn
6	BlackRock, Inc.	0002012383	817,621	4.64%	▲357,615	+77.74%	$10.78Mn
7	Affinity Asset Advisors, LLC	0001773195	706,904	4.01%	0	0.00%	$9.32Mn
8	Nantahala Capital Management, LLC	0001472322	660,036	3.75%	0	0.00%	$8.70Mn
9	ADAGE CAPITAL PARTNERS GP, L.L.C.	0001165408	540,968	3.07%	▲312,568	+136.85%	$7.13Mn
10	ADAR1 Capital Management, LLC	0001940272	540,054	3.07%	0	0.00%	$7.12Mn
11	VANGUARD CAPITAL MANAGEMENT LLC	0002100119	454,778	2.58%	▲143,865	+46.27%	$5.99Mn
12	DRIEHAUS CAPITAL MANAGEMENT LLC	0000938206	450,045	2.55%	0	0.00%	$5.93Mn
13	TCG Crossover Management, LLC	0001839948	416,301	2.36%	0	0.00%	$5.49Mn
14	Siren, L.L.C.	0002005245	347,718	1.97%	0	0.00%	$4.58Mn
15	AQR CAPITAL MANAGEMENT LLC	0001167557	298,974	1.70%	▲31,219	+11.66%	$3.94Mn
16	GEODE CAPITAL MANAGEMENT, LLC	0001214717	296,870	1.68%	▲123,227	+70.97%	$3.91Mn
17	72 Investment Holdings, LLC	0001832749	276,831	1.57%	0	0.00%	$3.65Mn
18	State Street Corp	0000093751	232,587	1.32%	▲92,246	+65.73%	$3.07Mn
19	VANGUARD PORTFOLIO MANAGEMENT LLC	0002100121	223,551	1.27%	▲74,992	+50.48%	$2.95Mn
20	TWO SIGMA INVESTMENTS, LP	0001179392	178,071	1.01%	▲12,599	+7.61%	$2.35Mn

Showing 1 to 20 of 106 holders