Korro Bio, Inc.

KRRO

Exchange: Nasdaq
Industry: Pharmaceutical Preparations
SEC CIK: 0001703647

SEC filings (opens in a new tab)

In the last 90 days, Korro Bio, Inc. insiders filed 1 open-market purchase and 8 sales; 106 institutions reported holding it in 13F filings for Q2 2026, worth $190.1M in total; no superinvestor holds it.

Q2 2022 vs. Q1 2022

How the institutions holding Korro Bio, Inc. changed between Q1 2022 and Q2 2022.

All holders in Q2 2022 All holders in Q1 2022

13F holders of KRRO: Q1 2022 compared with Q2 2022
Measure	Q1 2022	Of which not filed for Q2 2022	Q2 2022	Change
Holders	86	3	58	−25
Shares	15.9M	108.2K	8.68M	−7.07M (−44.9%)
Value	$33.1M	$229.0K	$13.0M	−$19.9M (−60.4%)

3 institutions that held it in Q1 2022 haven't filed for Q2 2022 yet. Not filing isn't selling, so the changes leave them out.

New holders (10)

Institutions that held Korro Bio, Inc. at the end of Q2 2022 but not at the end of Q1 2022.

Institutions new to KRRO in Q2 2022
Institution	Shares	Value	% of portfolio
Ergoteles LLC	156,300	$234.0K	0.01%
Citadel Advisors LLC	122,638	$183.0K	0.00%
Waldron Private Wealth LLC	70,670	$106.0K	0.01%
Prudential Financial Inc	23,700	$36.0K	0.00%
Qube Research & Technologies Ltd	23,256	$35.0K	0.00%
Essex Financial Services, Inc.	20,000	$30.0K	0.00%
LMR Partners LLP	11,538	$17.0K	0.00%
Verition Fund Management LLC	10,267	$15.0K	0.00%
City State Bank	1,000	$1.00K	0.00%
Credit Suisse AG	106	$0	0.00%

Sold out (35)

Institutions that held Korro Bio, Inc. at the end of Q1 2022 and filed for Q2 2022 without it.

Institutions that sold out of KRRO in Q2 2022
Institution	Shares, Q1 2022	Value, Q1 2022
Jacobs Levy Equity Management, Inc	377,811	$801.0K
Amundi	274,652	$420.0K
Mariner, LLC	128,585	$273.0K
Two Sigma Investments, LP	110,401	$234.0K
South Dakota Investment Council	95,056	$202.0K
Walleye Capital LLC	79,144	$168.0K
Charles Schwab Investment Management Inc	75,749	$161.0K
Connor, Clark & Lunn Investment Management Ltd.	61,985	$131.0K
Occudo Quantitative Strategies LP	51,849	$110.0K
Rhumbline Advisers	40,773	$86.0K
Alliancebernstein L.P.	33,800	$72.0K
Schonfeld Strategic Advisors LLC	31,000	$66.0K
Jump Financial, LLC	25,267	$54.0K
Allspring Global Investments Holdings, LLC	25,853	$54.0K
Algert Global LLC	24,750	$52.0K
Two Sigma Advisers, LP	24,500	$52.0K
PDT Partners, LLC	23,397	$50.0K
Cubist Systematic Strategies, LLC	23,509	$50.0K
Mirabella Financial Services LLP	23,100	$49.0K
Deutsche Bank AG	17,359	$37.0K
American International Group, Inc.	16,061	$34.0K
California State Teachers Retirement System	14,157	$30.0K
ExodusPoint Capital Management, LP	14,269	$30.0K
Public Employees Retirement System of Ohio	13,851	$29.0K
Acadian Asset Management LLC	11,365	$24.0K
Amalgamated Bank	3,868	$8.00K
Simplex Trading, LLC	3,677	$7.00K
Ameritas Investment Partners, Inc.	2,140	$5.00K
Point72 Hong Kong Ltd	2,234	$5.00K
Aquatic Capital Management LLC	1,900	$4.00K
Quantbot Technologies LP	1,327	$2.00K
Bollard Group LLC	1,111	$2.00K
The PNC Financial Services Group, Inc.	198	$0
Toronto Dominion Bank	4	$0
Nuveen Asset Management, LLC	136,663	–

Not filed for Q2 2022 yet (3)

Institutions that held Korro Bio, Inc. at the end of Q1 2022 and haven't filed a 13F for Q2 2022. Not filing isn't selling, so they aren't counted as sold out.

Institutions holding KRRO in Q1 2022 that haven't filed for Q2 2022
Institution	Shares, Q1 2022	Value, Q1 2022
Parametric Portfolio Associates LLC	72,705	$154.0K
Susquehanna Fundamental Investments, LLC	31,668	$67.0K
Amalgamated Financial Corp.	3,868	$8.00K