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 $190.1M 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
- 14.4M
- +1.63M (+12.8%) vs. Q1 2026
- Total value
- $190.1M
- +$45.4M (+31.4%) vs. Q1 2026
- New holders
- 20
- 47 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 | $190.1M |
| Q1 2026 | 99 | $144.8M |
| Q4 2025 | 83 | $60.6M |
| Q3 2025 | 92 | $465.5M |
| Q2 2025 | 71 | $114.8M |
| Q1 2025 | 75 | $169.0M |
| Q4 2024 | 84 | $359.6M |
| Q3 2024 | 71 | $285.3M |
| Q2 2024 | 64 | $285.7M |
| Q1 2024 | 49 | $618.6M |
| Q4 2023 | 40 | $301.5M |
| Q3 2023 | 42 | $2.58M |
| Q2 2023 | 41 | $1.67M |
| Q1 2023 | 43 | $2.52M |
| Q4 2022 | 50 | $28.3M |
| Q3 2022 | 55 | $14.1M |
| Q2 2022 | 58 | $13.0M |
| Q1 2022 | 86 | $33.1M |
| Q4 2021 | 84 | $90.2M |
| Q3 2021 | 88 | $130.4M |
| Q2 2021 | 91 | $193.9M |
| Q1 2021 | 115 | $186.6M |
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 |
|---|---|---|---|---|---|
| BlackRock, Inc. | 817,621 | $10.8M | 0.00% | +357,615+77.7% | Added |
| Balyasny Asset Management LLC | 951,783 | $12.5M | 0.02% | −88,271−8.5% | Reduced |
| Atlas Venture Life Science Advisors, LLC | 962,884 | $12.7M | 1.44% | −174,265−15.3% | Reduced |
| VR Adviser, LLC | 1,009,500 | $13.3M | 0.40% | 00.0% | Unchanged |
| NEA Management Company, LLC | 1,297,893 | $17.1M | 1.08% | 00.0% | Unchanged |
| Lynx1 Capital Management LP | 1,538,296 | $20.3M | 2.34% | 00.0% | Unchanged |
| Jane Street Group, LLC | 0 | $0 | 0.00% | −115,704−100.0% | Sold out |
| Quadrature Capital Ltd | 0 | $0 | 0.00% | −20,356−100.0% | Sold out |
| HRT Financial LP | 0 | $0 | 0.00% | −10,790−100.0% | Sold out |
| MAI Capital Management | 0 | $0 | 0.00% | −606−100.0% | Sold out |
| Advisory Services Network, LLC | 0 | $0 | 0.00% | −245−100.0% | Sold out |
| Root Financial Partners, LLC | 0 | $0 | 0.00% | −63−100.0% | Sold out |
| Keating Financial Advisory Services, Inc. | 0 | $0 | 0.00% | −63−100.0% | Sold out |
| Wealth Preservation Advisors, LLC | 0 | $0 | 0.00% | −44−100.0% | Sold out |
| Bare Financial Services, Inc | 0 | $0 | 0.00% | −44−100.0% | Sold out |
| Fortitude Family Office, LLC | 0 | $0 | 0.00% | −39−100.0% | Sold out |
| Fifth Third Bancorp | 0 | $0 | 0.00% | −11−100.0% | Sold out |
| CWM, LLC | – | – | – | – | Not filed |
| Sunbelt Securities, Inc. | – | – | – | – | Not filed |