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, Q3 2025
Institutional positions in Korro Bio, Inc. as of Sep 30, 2025. 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
- 92
- +21 vs. Q2 2025
- Shares held
- 9.76M
- +712.6K (+7.9%) vs. Q2 2025
- Total value
- $465.5M
- +$350.7M (+305.5%) vs. Q2 2025
- New holders
- 26
- 29 more added
- Sold out
- 5
- 20 more reduced
Compare with Q2 2025: 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, Q3 2025
Shares, value and share of portfolio for each institution holding Korro Bio, Inc.; share changes are against Q2 2025.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| XTX Topco Ltd | 43,538 | $0 | 0.00% | +43,538 | New |
| SBI Securities Co., Ltd. | 1 | $48 | 0.00% | −6−85.7% | Reduced |
| Northwestern Mutual Wealth Management Co | 2 | $96 | 0.00% | 00.0% | Unchanged |
| MAI Capital Management | 5 | $240 | 0.00% | 00.0% | Unchanged |
| Clearstead Advisors, LLC | 18 | $863 | 0.00% | +18 | New |
| True Wealth Design, LLC | 19 | $910 | 0.00% | +19 | New |
| IFP Advisors, Inc | 40 | $1.92K | 0.00% | +40 | Added |
| Wealthspire Advisors, LLC | 65 | $3.11K | 0.00% | +65 | New |
| Nisa Investment Advisors, LLC | 83 | $3.98K | 0.00% | +53+176.7% | Added |
| GAMMA Investing LLC | 89 | $4.26K | 0.00% | +23+34.8% | Added |
| EverSource Wealth Advisors, LLC | 89 | $4.26K | 0.00% | +67+304.5% | Added |
| Allworth Financial LP | 92 | $4.41K | 0.00% | +92 | New |
| Optiver Holding B.V. | 116 | $5.55K | 0.00% | +116 | New |
| Amalgamated Bank | 211 | $10.0K | 0.00% | 00.0% | Unchanged |
| Advisor Group Holdings, Inc. | 280 | $12.0K | 0.00% | +279+27,900.0% | Added |
| Versant Capital Management, Inc | 271 | $13.0K | 0.00% | −11−3.9% | Reduced |
| Citigroup Inc | 337 | $16.1K | 0.00% | −2,147−86.4% | Reduced |
| Essential Partners LLC | 394 | $18.9K | 0.01% | +391+13,033.3% | Added |
| California State Teachers Retirement System | 416 | $19.9K | 0.00% | −26−5.9% | Reduced |
| Duncker Streett & Co Inc | 437 | $20.9K | 0.00% | 00.0% | Unchanged |
| Sterling Capital Management LLC | 458 | $21.9K | 0.00% | +337+278.5% | Added |
| Legal & General Group Plc | 526 | $25.2K | 0.00% | 00.0% | Unchanged |
| Ameritas Investment Partners, Inc. | 598 | $28.6K | 0.00% | 00.0% | Unchanged |
| Russell Investments Group, Ltd. | 815 | $39.0K | 0.00% | +815 | New |
| Tower Research Capital LLC (TRC) | 1,038 | $49.7K | 0.00% | −1,671−61.7% | Reduced |
| BNP Paribas Arbitrage, SA | 1,314 | $62.9K | 0.00% | +661+101.2% | Added |
| Steward Partners Investment Advisory, LLC | 1,750 | $83.8K | 0.00% | +600+52.2% | Added |
| North Star Investment Management Corp. | 1,800 | $86.2K | 0.01% | 00.0% | Unchanged |
| Police & Firemen's Retirement System of New Jersey | 2,286 | $109.5K | 0.00% | +1,060+86.5% | Added |
| Quest Partners LLC | 2,468 | $118.2K | 0.01% | −24,743−90.9% | Reduced |
| CWM, LLC | 2,693 | $129.0K | 0.00% | +2,145+391.4% | Added |
| The PNC Financial Services Group, Inc. | 2,914 | $139.6K | 0.00% | +2,914 | New |
| New York State Common Retirement Fund | 3,000 | $143.7K | 0.00% | 00.0% | Unchanged |
| Mirae Asset Global ETFs Holdings Ltd. | 3,138 | $150.3K | 0.00% | −364−10.4% | Reduced |
| SRS Capital Advisors, Inc. | 3,610 | $172.9K | 0.00% | +3,610 | New |
| Deutsche Bank AG | 3,731 | $178.7K | 0.00% | +115+3.2% | Added |
| MetLife Investment Management | 3,945 | $188.9K | 0.00% | +3,945 | New |
| Quarry LP | 4,375 | $209.5K | 0.05% | −125−2.8% | Reduced |
| Bank of America Corp | 4,704 | $225.3K | 0.00% | −23,452−83.3% | Reduced |
| Wealth Forward, LLC | 5,009 | $239.9K | 0.14% | +5,009 | New |
| Wells Fargo & Company | 5,170 | $247.6K | 0.00% | +837+19.3% | Added |
| Royal Bank of Canada | 5,992 | $287.0K | 0.00% | −613−9.3% | Reduced |
| Quantinno Capital Management LP | 6,143 | $294.2K | 0.00% | +6,143 | New |
| Algert Global LLC | 7,108 | $340.4K | 0.01% | +7,108 | New |
| Alliancebernstein L.P. | 7,700 | $368.8K | 0.00% | +7,700 | New |
| American Century Companies Inc | 8,757 | $419.4K | 0.00% | +8,757 | New |
| Nuveen, LLC | 9,264 | $443.7K | 0.00% | +9,264 | New |
| Rhumbline Advisers | 9,343 | $447.4K | 0.00% | −168−1.8% | Reduced |
| Blair William & Co | 9,750 | $466.9K | 0.00% | +9,750 | New |
| Two Sigma Advisers, LP | 11,409 | $546.4K | 0.00% | +11,409 | New |
| Goldman Sachs Group Inc | 15,681 | $751.0K | 0.00% | +15,681 | New |
| Emerald Advisers, LLC | 16,469 | $788.7K | 0.03% | +16,469 | New |
| Bank of New York Mellon Corp | 19,313 | $924.9K | 0.00% | +2,791+16.9% | Added |
| Eversept Partners, LP | 20,856 | $998.8K | 0.08% | +20,856 | New |
| Charles Schwab Investment Management Inc | 23,101 | $1.11M | 0.00% | +5,325+30.0% | Added |
| OrbiMed Advisors LLC | 32,400 | $1.55M | 0.04% | 00.0% | Unchanged |
| Rock Springs Capital Management LP | 35,719 | $1.71M | 0.10% | 00.0% | Unchanged |
| Trexquant Investment LP | 38,260 | $1.83M | 0.02% | +17,390+83.3% | Added |
| ADAR1 Capital Management, LLC | 40,235 | $1.93M | 0.19% | −28,580−41.5% | Reduced |
| Renaissance Technologies LLC | 40,400 | $1.93M | 0.00% | −5,300−11.6% | Reduced |
| AQR Capital Management LLC | 48,407 | $2.32M | 0.00% | +48,407 | New |
| Woodline Partners LP | 50,094 | $2.40M | 0.01% | 00.0% | Unchanged |
| UBS Group AG | 53,103 | $2.54M | 0.00% | +34,522+185.8% | Added |
| F/M Investments LLC | 55,245 | $2.65M | 0.10% | +55,245 | New |
| Northern Trust Corp | 57,273 | $2.74M | 0.00% | −595−1.0% | Reduced |
| Standard Life Aberdeen plc | 57,983 | $2.78M | 0.00% | −26,445−31.3% | Reduced |
| Emerald Mutual Fund Advisers Trust | 58,911 | $2.82M | 0.15% | +58,911 | New |
| DAFNA Capital Management LLC | 60,804 | $2.91M | 0.72% | +3,113+5.4% | Added |
| Two Sigma Investments, LP | 64,455 | $3.09M | 0.00% | +27,709+75.4% | Added |
| Schonfeld Strategic Advisors LLC | 90,186 | $4.32M | 0.03% | +90,186 | New |
| Blue Owl Capital Holdings LP | 105,000 | $5.03M | 1.56% | −20,000−16.0% | Reduced |
| State Street Corp | 124,569 | $5.97M | 0.00% | +2,629+2.2% | Added |
| Raymond James Financial Inc | 148,971 | $7.13M | 0.00% | +65,579+78.6% | Added |
| Citadel Advisors LLC | 153,928 | $7.37M | 0.01% | −196,718−56.1% | Reduced |
| Geode Capital Management, LLC | 162,932 | $7.80M | 0.00% | +7,545+4.9% | Added |
| Morgan Stanley | 167,494 | $8.02M | 0.00% | +85,761+104.9% | Added |
| JPMorgan Chase & Co | 199,249 | $9.54M | 0.00% | +196,079+6,185.5% | Added |
| Millennium Management LLC | 260,333 | $12.5M | 0.01% | +4,650+1.8% | Added |
| Polar Capital Holdings Plc | 264,694 | $12.7M | 0.06% | +14,694+5.9% | Added |
| 72 Investment Holdings, LLC | 276,831 | $13.3M | 19.51% | 00.0% | Unchanged |
| Tri Locum Partners LP | 337,764 | $16.2M | 3.72% | +198,271+142.1% | Added |
| Qiming U.S. Ventures Management, LLC | 368,085 | $17.6M | 31.68% | 00.0% | Unchanged |
| Vanguard Group Inc | 395,659 | $18.9M | 0.00% | +8,921+2.3% | Added |
| TCG Crossover Management, LLC | 416,301 | $19.9M | 0.98% | +416,301 | New |
| Siren, L.L.C. | 418,833 | $20.1M | 0.78% | 00.0% | Unchanged |
| BlackRock, Inc. | 446,698 | $21.4M | 0.00% | −15,191−3.3% | Reduced |
| Cormorant Asset Management, LP | 465,000 | $22.3M | 1.54% | 00.0% | Unchanged |
| Point72 Asset Management, L.P. | 531,969 | $25.5M | 0.06% | −8,105−1.5% | Reduced |
| FMR LLC | 563,681 | $27.0M | 0.00% | −75,541−11.8% | Reduced |
| Driehaus Capital Management LLC | 671,981 | $32.2M | 0.23% | +91,122+15.7% | Added |
| NEA Management Company, LLC | 1,090,793 | $52.2M | 2.87% | 00.0% | Unchanged |
| Atlas Venture Life Science Advisors, LLC | 1,137,149 | $54.5M | 7.24% | 00.0% | Unchanged |
| Deep Track Capital, LP | 0 | $0 | 0.00% | −277,966−100.0% | Sold out |
| Ally Bridge Group (NY) LLC | 0 | $0 | 0.00% | −154,223−100.0% | Sold out |
| D. E. Shaw & Co., Inc. | 0 | $0 | 0.00% | −24,383−100.0% | Sold out |
| Walleye Capital LLC | 0 | $0 | 0.00% | −16,060−100.0% | Sold out |
| Rise Advisors, LLC | 0 | $0 | 0.00% | −29−100.0% | Sold out |