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 2025
Institutional positions in Korro Bio, Inc. as of Jun 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
- 71
- −4 vs. Q1 2025
- Shares held
- 9.05M
- −653.4K (−6.7%) vs. Q1 2025
- Total value
- $114.8M
- −$54.2M (−32.1%) vs. Q1 2025
- New holders
- 11
- 26 more added
- Sold out
- 15
- 13 more reduced
Compare with Q1 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, Q2 2025
Shares, value and share of portfolio for each institution holding Korro Bio, Inc.; share changes are against Q1 2025.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Atlas Venture Life Science Advisors, LLC | 1,137,149 | $14.2M | 2.14% | 00.0% | Unchanged |
| NEA Management Company, LLC | 1,090,793 | $13.6M | 1.03% | 00.0% | Unchanged |
| FMR LLC | 639,222 | $7.98M | 0.00% | −4,047−0.6% | Reduced |
| Driehaus Capital Management LLC | 580,859 | $7.25M | 0.06% | −1,590−0.3% | Reduced |
| Point72 Asset Management, L.P. | 540,074 | $6.75M | 0.02% | +19,184+3.7% | Added |
| Cormorant Asset Management, LP | 465,000 | $5.81M | 0.43% | +84,697+22.3% | Added |
| BlackRock, Inc. | 461,889 | $5.77M | 0.00% | +20,459+4.6% | Added |
| Siren, L.L.C. | 418,833 | $5.23M | 0.27% | 00.0% | Unchanged |
| Vanguard Group Inc | 386,738 | $4.83M | 0.00% | +4,939+1.3% | Added |
| Qiming U.S. Ventures Management, LLC | 368,085 | $4.60M | 19.47% | 00.0% | Unchanged |
| Citadel Advisors LLC | 350,646 | $4.38M | 0.00% | +97,396+38.5% | Added |
| Tri Locum Partners LP | 139,493 | $3.48M | 1.06% | +11,112+8.7% | Added |
| Deep Track Capital, LP | 277,966 | $3.47M | 0.11% | −596,648−68.2% | Reduced |
| 72 Investment Holdings, LLC | 276,831 | $3.46M | 9.02% | 00.0% | Unchanged |
| Millennium Management LLC | 255,683 | $3.19M | 0.00% | +146,814+134.9% | Added |
| Polar Capital Holdings Plc | 250,000 | $3.12M | 0.02% | 00.0% | Unchanged |
| Geode Capital Management, LLC | 155,387 | $1.94M | 0.00% | +15,166+10.8% | Added |
| Ally Bridge Group (NY) LLC | 154,223 | $1.93M | 1.60% | +94,500+158.2% | Added |
| Blue Owl Capital Holdings LP | 125,000 | $1.56M | 0.50% | +125,000 | New |
| State Street Corp | 121,940 | $1.52M | 0.00% | −498−0.4% | Reduced |
| Standard Life Aberdeen plc | 84,428 | $1.05M | 0.00% | 00.0% | Unchanged |
| Raymond James Financial Inc | 83,392 | $1.04M | 0.00% | +65,170+357.6% | Added |
| Morgan Stanley | 81,733 | $1.02M | 0.00% | +38,633+89.6% | Added |
| ADAR1 Capital Management, LLC | 68,815 | $859.5K | 0.14% | +100+0.1% | Added |
| Northern Trust Corp | 57,868 | $722.8K | 0.00% | −343−0.6% | Reduced |
| DAFNA Capital Management LLC | 57,691 | $720.6K | 0.20% | +10,605+22.5% | Added |
| Woodline Partners LP | 50,094 | $625.7K | 0.00% | 00.0% | Unchanged |
| Renaissance Technologies LLC | 45,700 | $570.8K | 0.00% | +45,700 | New |
| Two Sigma Investments, LP | 36,746 | $459.0K | 0.00% | +36,746 | New |
| Rock Springs Capital Management LP | 35,719 | $446.1K | 0.03% | 00.0% | Unchanged |
| OrbiMed Advisors LLC | 32,400 | $404.7K | 0.01% | 00.0% | Unchanged |
| Bank of America Corp | 28,156 | $351.7K | 0.00% | +23,615+520.0% | Added |
| Quest Partners LLC | 27,211 | $339.9K | 0.03% | +18,015+195.9% | Added |
| D. E. Shaw & Co., Inc. | 24,383 | $304.5K | 0.00% | +24,383 | New |
| Trexquant Investment LP | 20,870 | $260.7K | 0.00% | +20,870 | New |
| UBS Group AG | 18,581 | $232.1K | 0.00% | −55,630−75.0% | Reduced |
| Charles Schwab Investment Management Inc | 17,776 | $222.0K | 0.00% | −512−2.8% | Reduced |
| Bank of New York Mellon Corp | 16,522 | $206.4K | 0.00% | +409+2.5% | Added |
| Walleye Capital LLC | 16,060 | $200.6K | 0.00% | −14,895−48.1% | Reduced |
| Rhumbline Advisers | 9,511 | $118.8K | 0.00% | +442+4.9% | Added |
| Royal Bank of Canada | 6,605 | $82.0K | 0.00% | +508+8.3% | Added |
| Quarry LP | 4,500 | $56.2K | 0.01% | +2,489+123.8% | Added |
| Wells Fargo & Company | 4,333 | $54.1K | 0.00% | +540+14.2% | Added |
| Deutsche Bank AG | 3,616 | $45.2K | 0.00% | 00.0% | Unchanged |
| Mirae Asset Global ETFs Holdings Ltd. | 3,502 | $43.7K | 0.00% | −156−4.3% | Reduced |
| JPMorgan Chase & Co | 3,170 | $39.6K | 0.00% | +101+3.3% | Added |
| New York State Common Retirement Fund | 3,000 | $37.5K | 0.00% | 00.0% | Unchanged |
| Tower Research Capital LLC (TRC) | 2,709 | $33.8K | 0.00% | +1,945+254.6% | Added |
| Citigroup Inc | 2,484 | $31.0K | 0.00% | −2,347−48.6% | Reduced |
| North Star Investment Management Corp. | 1,800 | $22.5K | 0.00% | 00.0% | Unchanged |
| Police & Firemen's Retirement System of New Jersey | 1,226 | $15.3K | 0.00% | 00.0% | Unchanged |
| Steward Partners Investment Advisory, LLC | 1,150 | $14.4K | 0.00% | +500+76.9% | Added |
| BNP Paribas Arbitrage, SA | 653 | $8.16K | 0.00% | +280+75.1% | Added |
| Ameritas Investment Partners, Inc. | 598 | $7.47K | 0.00% | 00.0% | Unchanged |
| CWM, LLC | 548 | $7.00K | 0.00% | +507+1,236.6% | Added |
| Legal & General Group Plc | 526 | $6.57K | 0.00% | −40−7.1% | Reduced |
| California State Teachers Retirement System | 442 | $5.52K | 0.00% | 00.0% | Unchanged |
| Duncker Streett & Co Inc | 437 | $5.46K | 0.00% | 00.0% | Unchanged |
| Versant Capital Management, Inc | 282 | $3.52K | 0.00% | +282 | New |
| Amalgamated Bank | 211 | $3.00K | 0.00% | 00.0% | Unchanged |
| Sterling Capital Management LLC | 121 | $1.51K | 0.00% | +39+47.6% | Added |
| GAMMA Investing LLC | 66 | $824 | 0.00% | −527−88.9% | Reduced |
| Nisa Investment Advisors, LLC | 30 | $375 | 0.00% | −301−90.9% | Reduced |
| Rise Advisors, LLC | 29 | $362 | 0.00% | +29 | New |
| EverSource Wealth Advisors, LLC | 22 | $275 | 0.00% | +22 | New |
| SBI Securities Co., Ltd. | 7 | $87 | 0.00% | 00.0% | Unchanged |
| IFP Advisors, Inc | 0 | $75 | 0.00% | 0 | New |
| MAI Capital Management | 5 | $63 | 0.00% | 00.0% | Unchanged |
| Essential Partners LLC | 3 | $37 | 0.00% | +3 | New |
| Northwestern Mutual Wealth Management Co | 2 | $25 | 0.00% | +2 | New |
| Advisor Group Holdings, Inc. | 1 | $12 | 0.00% | 00.0% | Unchanged |
| Alliancebernstein L.P. | 0 | $0 | 0.00% | −680,517−100.0% | Sold out |
| Franklin Resources Inc | 0 | $0 | 0.00% | −91,704−100.0% | Sold out |
| Schonfeld Strategic Advisors LLC | 0 | $0 | 0.00% | −30,475−100.0% | Sold out |
| Goldman Sachs Group Inc | 0 | $0 | 0.00% | −20,944−100.0% | Sold out |
| Blair William & Co | 0 | $0 | 0.00% | −16,230−100.0% | Sold out |
| Nuveen, LLC | 0 | $0 | 0.00% | −12,145−100.0% | Sold out |
| XTX Topco Ltd | 0 | $0 | 0.00% | −10,600−100.0% | Sold out |
| Susquehanna International Group, LLP | 0 | $0 | 0.00% | −10,372−100.0% | Sold out |
| Barclays PLC | 0 | $0 | 0.00% | −7,241−100.0% | Sold out |
| MetLife Investment Management | 0 | $0 | 0.00% | −3,639−100.0% | Sold out |
| Corebridge Financial, Inc. | 0 | $0 | 0.00% | −3,019−100.0% | Sold out |
| Federated Hermes, Inc. | 0 | $0 | 0.00% | −64−100.0% | Sold out |
| BNP Paribas | 0 | $0 | 0.00% | −59−100.0% | Sold out |
| Spire Wealth Management | 0 | $0 | 0.00% | −39−100.0% | Sold out |
| True Wealth Design, LLC | 0 | $0 | 0.00% | −1−100.0% | Sold out |