Korro Bio, Inc.
KRRO- Exchange
- Nasdaq
- Industry
- Pharmaceutical Preparations
- SEC CIK
- 0001703647
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 $198.8M in total; no superinvestor holds it.
13F holders, Q2 2026
Institutional positions in Korro Bio, Inc. as of Jun 30, 2026. Investment managers with $100 million or more in US stocks report their long positions on Form 13F within 45 days after each quarter ends. How 13F works
- Institutional holders
- 106
- +9 vs. Q1 2026
- Shares held
- 15.1M
- +2.29M (+17.9%) vs. Q1 2026
- Total value
- $198.8M
- +$54.1M (+37.4%) vs. Q1 2026
- New holders
- 20
- 48 more added
- Sold out
- 11
- 19 more reduced
2 institutions that held it in Q1 2026 haven't filed for Q2 2026 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q1 2026: new holders, sold out and not filed yet
Holders and value by quarter
Institutions reporting KRRO on Form 13F each quarter since Q1 2021, and the total value they reported. Values are as of each quarter end, so they also move with the share price.
| Quarter | Holders | Value |
|---|---|---|
| Q2 2026 | 106 | $198.8M |
| Q1 2026 | 99 | $144.8M |
| Q4 2025 | 83 | $60.6M |
| Q3 2025 | 92 | $475.1M |
| Q2 2025 | 71 | $114.9M |
| Q1 2025 | 75 | $169.0M |
| Q4 2024 | 84 | $359.6M |
| Q3 2024 | 71 | $285.7M |
| Q2 2024 | 63 | $285.8M |
| Q1 2024 | 49 | $621.2M |
| Q4 2023 | 40 | $301.8M |
| Q3 2023 | 0 | $0 |
| Q2 2023 | 0 | $0 |
| Q1 2023 | 0 | $0 |
| Q4 2022 | 0 | $0 |
| Q3 2022 | 0 | $0 |
| Q2 2022 | 0 | $0 |
| Q1 2022 | 0 | $0 |
| Q4 2021 | 0 | $0 |
| Q3 2021 | 0 | $0 |
| Q2 2021 | 0 | $0 |
| Q1 2021 | 0 | $0 |
Institutions, Q2 2026
Shares, value and share of portfolio for each institution holding Korro Bio, Inc.; share changes are against Q1 2026.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Lynx1 Capital Management LP | 1,538,296 | $20.3M | 2.34% | 00.0% | Unchanged |
| Nantahala Capital Management, LLC | 1,320,072 | $17.4M | 0.53% | +660,036+100.0% | Added |
| NEA Management Company, LLC | 1,297,893 | $17.1M | 1.08% | 00.0% | Unchanged |
| VR Adviser, LLC | 1,009,500 | $13.3M | 0.40% | 00.0% | Unchanged |
| Atlas Venture Life Science Advisors, LLC | 962,884 | $12.7M | 1.44% | −174,265−15.3% | Reduced |
| Balyasny Asset Management LLC | 951,783 | $12.5M | 0.02% | −88,271−8.5% | Reduced |
| BlackRock, Inc. | 817,621 | $10.8M | 0.00% | +357,615+77.7% | Added |
| Affinity Asset Advisors, LLC | 706,904 | $9.32M | 0.46% | 00.0% | Unchanged |
| Adage Capital Partners GP, L.L.C. | 540,968 | $7.13M | 0.01% | +312,568+136.9% | Added |
| ADAR1 Capital Management, LLC | 540,054 | $7.12M | 0.33% | 00.0% | Unchanged |
| Vanguard Capital Management LLC | 454,778 | $5.99M | 0.00% | +143,865+46.3% | Added |
| Driehaus Capital Management LLC | 450,045 | $5.93M | 0.03% | 00.0% | Unchanged |
| TCG Crossover Management, LLC | 416,301 | $5.49M | 0.13% | 00.0% | Unchanged |
| Kalehua Capital Management LLC | 405,040 | $5.34M | 1.70% | +295,664+270.3% | Added |
| Siren, L.L.C. | 347,718 | $4.58M | 0.09% | 00.0% | Unchanged |
| AQR Capital Management LLC | 298,974 | $3.94M | 0.00% | +31,219+11.7% | Added |
| Geode Capital Management, LLC | 296,870 | $3.91M | 0.00% | +123,227+71.0% | Added |
| 72 Investment Holdings, LLC | 276,831 | $3.65M | 7.30% | 00.0% | Unchanged |
| State Street Corp | 232,587 | $3.07M | 0.00% | +92,246+65.7% | Added |
| Vanguard Portfolio Management LLC | 223,551 | $2.95M | 0.00% | +74,992+50.5% | Added |
| Two Sigma Investments, LP | 178,071 | $2.35M | 0.00% | +12,599+7.6% | Added |
| JPMorgan Chase & Co | 124,726 | $1.65M | 0.00% | +56,226+82.1% | Added |
| Millennium Management LLC | 118,434 | $1.56M | 0.00% | +54,828+86.2% | Added |
| Goldman Sachs Group Inc | 116,983 | $1.54M | 0.00% | +66,442+131.5% | Added |
| Renaissance Technologies LLC | 110,524 | $1.46M | 0.00% | −25,703−18.9% | Reduced |
| UBS Group AG | 105,453 | $1.39M | 0.00% | +83,777+386.5% | Added |
| Northern Trust Corp | 88,089 | $1.16M | 0.00% | +30,387+52.7% | Added |
| Vanguard Fiduciary Trust Co | 74,901 | $987.2K | 0.00% | +33,360+80.3% | Added |
| Emerald Mutual Fund Advisers Trust | 63,562 | $837.7K | 0.03% | +707+1.1% | Added |
| F/M Investments LLC | 63,562 | $837.7K | 0.04% | +707+1.1% | Added |
| Walleye Capital LLC | 54,289 | $715.5K | 0.00% | +54,289 | New |
| Quantinno Capital Management LP | 52,720 | $694.9K | 0.00% | +16,742+46.5% | Added |
| Bank of America Corp | 51,707 | $681.5K | 0.00% | +51,707 | New |
| Raymond James Financial Inc | 48,920 | $644.8K | 0.00% | +6,082+14.2% | Added |
| XTX Topco Ltd | 47,819 | $630.3K | 0.01% | −12,653−20.9% | Reduced |
| Citadel Advisors LLC | 40,390 | $532.3K | 0.00% | +9,476+30.7% | Added |
| FMR LLC | 38,975 | $513.7K | 0.00% | +75+0.2% | Added |
| Boothbay Fund Management, LLC | 35,853 | $472.5K | 0.01% | −6,147−14.6% | Reduced |
| D. E. Shaw & Co., Inc. | 34,213 | $450.9K | 0.00% | +34,213 | New |
| Jump Financial, LLC | 33,906 | $446.9K | 0.00% | +33,906 | New |
| Bank of New York Mellon Corp | 31,730 | $418.2K | 0.00% | +10,000+46.0% | Added |
| AIHC Capital Management Ltd | 30,265 | $398.9K | 0.38% | 00.0% | Unchanged |
| Mariner, LLC | 27,908 | $367.8K | 0.00% | +2,089+8.1% | Added |
| BNP Paribas Arbitrage, SA | 26,254 | $346.0K | 0.00% | +23,900+1,015.3% | Added |
| Panagora Asset Management Inc | 25,572 | $337.0K | 0.00% | +25,572 | New |
| Charles Schwab Investment Management Inc | 24,110 | $317.8K | 0.00% | +10,716+80.0% | Added |
| Morgan Stanley | 22,501 | $296.6K | 0.00% | −18,622−45.3% | Reduced |
| Ieq Capital, LLC | 21,246 | $280.0K | 0.00% | +8,469+66.3% | Added |
| Marshall Wace, LLP | 19,060 | $251.2K | 0.00% | −15,283−44.5% | Reduced |
| Guggenheim Capital LLC | 18,400 | $242.5K | 0.00% | +4,303+30.5% | Added |
| Price T Rowe Associates Inc | 17,634 | $233.0K | 0.00% | +17,634 | New |
| HSBC Holdings PLC | 17,812 | $232.8K | 0.00% | +17,812 | New |
| Deutsche Bank AG | 15,948 | $210.2K | 0.00% | +5,404+51.3% | Added |
| Nuveen, LLC | 15,861 | $209.0K | 0.00% | +15,861 | New |
| Acadian Asset Management LLC | 14,480 | $189.0K | 0.00% | −27,345−65.4% | Reduced |
| Algert Global LLC | 14,212 | $187.3K | 0.00% | −4,973−25.9% | Reduced |
| Susquehanna Portfolio Strategies, LLC | 13,500 | $177.9K | 0.00% | −5,625−29.4% | Reduced |
| Mercer Global Advisors Inc | 12,888 | $169.9K | 0.00% | +12,888 | New |
| Wealth Enhancement Advisory Services, LLC | 11,508 | $167.6K | 0.00% | +11,508 | New |
| Rhumbline Advisers | 12,401 | $163.4K | 0.00% | +2,551+25.9% | Added |
| Trexquant Investment LP | 11,482 | $151.3K | 0.00% | −44,726−79.6% | Reduced |
| Dimensional Fund Advisors LP | 11,406 | $150.3K | 0.00% | +11,406 | New |
| Cerity Partners LLC | 10,794 | $142.3K | 0.00% | +10,794 | New |
| Alliancebernstein L.P. | 12,180 | $137.9K | 0.00% | +12,180 | New |
| Engineers Gate Manager LP | 10,217 | $134.7K | 0.00% | −13,485−56.9% | Reduced |
| American Century Companies Inc | 10,153 | $133.8K | 0.00% | +10,153 | New |
| Wells Fargo & Company | 9,564 | $126.1K | 0.00% | +6,975+269.4% | Added |
| SRS Capital Advisors, Inc. | 5,595 | $73.7K | 0.00% | +5,509+6,405.8% | Added |
| Citigroup Inc | 5,169 | $68.1K | 0.00% | +4,861+1,578.2% | Added |
| Mirae Asset Global ETFs Holdings Ltd. | 5,130 | $67.6K | 0.00% | +1,916+59.6% | Added |
| Russell Investments Group, Ltd. | 4,939 | $65.1K | 0.00% | +2,824+133.5% | Added |
| Police & Firemen's Retirement System of New Jersey | 4,627 | $61.0K | 0.00% | +3,254+237.0% | Added |
| New York State Common Retirement Fund | 3,000 | $39.5K | 0.00% | 00.0% | Unchanged |
| Simplex Trading, LLC | 1,975 | $26.0K | 0.00% | +1,975 | New |
| Vanguard Global Advisers, LLC | 1,929 | $25.4K | 0.00% | 00.0% | Unchanged |
| North Star Investment Management Corp. | 1,800 | $23.7K | 0.00% | 00.0% | Unchanged |
| Tower Research Capital LLC (TRC) | 1,587 | $20.9K | 0.00% | −57−3.5% | Reduced |
| Legal & General Group Plc | 1,082 | $14.3K | 0.00% | +556+105.7% | Added |
| GAMMA Investing LLC | 861 | $11.3K | 0.00% | +124+16.8% | Added |
| TD Waterhouse Canada Inc. | 808 | $11.0K | 0.00% | 00.0% | Unchanged |
| Ameritas Investment Partners, Inc. | 598 | $7.88K | 0.00% | 00.0% | Unchanged |
| Versant Capital Management, Inc | 539 | $7.10K | 0.00% | −152−22.0% | Reduced |
| Allworth Financial LP | 538 | $7.09K | 0.00% | +247+84.9% | Added |
| EverSource Wealth Advisors, LLC | 498 | $6.56K | 0.00% | +119+31.4% | Added |
| Duncker Streett & Co Inc | 437 | $5.76K | 0.00% | 00.0% | Unchanged |
| IFP Advisors, Inc | 418 | $5.51K | 0.00% | +373+828.9% | Added |
| Royal Bank of Canada | 352 | $4.00K | 0.00% | +248+238.5% | Added |
| UBS Asset Management Americas Inc | 225 | $2.97K | 0.00% | 00.0% | Unchanged |
| The PNC Financial Services Group, Inc. | 193 | $2.54K | 0.00% | −637−76.7% | Reduced |
| True Wealth Design, LLC | 192 | $2.53K | 0.00% | +93+93.9% | Added |
| Sterling Capital Management LLC | 191 | $2.52K | 0.00% | −29−13.2% | Reduced |
| Essential Partners LLC | 180 | $2.37K | 0.00% | −1,142−86.4% | Reduced |
| Advisor Group Holdings, Inc. | 134 | $1.77K | 0.00% | −1−0.7% | Reduced |
| Rothschild Investment LLC | 123 | $1.62K | 0.00% | +51+70.8% | Added |
| Farther Finance Advisors, LLC | 115 | $1.52K | 0.00% | +61+113.0% | Added |
| California State Teachers Retirement System | 93 | $1.23K | 0.00% | +93 | New |
| Optiver Holding B.V. | 60 | $791 | 0.00% | 00.0% | Unchanged |
| Basecamp Wealth Advisors LLC | 45 | $593 | 0.00% | +20+80.0% | Added |
| Timbuktu Capital Management, LLC | 38 | $501 | 0.00% | +38 | New |
| Global Retirement Partners, LLC | 35 | $461 | 0.00% | +35 | New |