Korro BioKRRO
13F holders, Q1 2026 (March 31)99holders +16
29new positions
13sold out
4famous investors
$11.31avg. 13F price*
At the end of Q1 2026, 99 institutions reported holding Korro Bio Inc. (KRRO) in their 13F filings, up 16 from Q4 2025. 29 opened new positions and 13 sold out. The largest holders were Lynx1 Capital Management LP ($17.4M), NEA Management Company, LLC ($14.7M) and Atlas Venture Life Science Advisors, LLC ($12.9M). 4 famous investors held it, including Jim Simons / Peter Brown (0.0% of Renaissance Technologies's portfolio), Cliff Asness (0.0% of AQR Capital Management's portfolio) and Israel Englander (0.0% of Millennium Management's portfolio).
- Company
- Korro Bio Inc.
- CUSIP
- 500946108
- Latest filing quarter
- Q2 2026
History
Number of 13F holders
Total Exit/New Position Q4 2025 → Q1 2026
| Institutions | Total Value | |
|---|---|---|
| New Positions | 29 | $48.2M |
| Exits | 13 | $2.4M |
All 13F filers, Q4 2025 → Q1 2026: 5,914,030 shares bought and 668,612 shares sold, net +5,245,418 shares. Counts holders who added, trimmed, opened or closed a position; split-adjusted.
Ownership 99 holders
| Lynx1 Capital Management LP | 2.75% | Add +126.9% | 1,538,296 | $17.4M |
| NEA Management Company, LLC | 0.84% | Add +19.0% | 1,297,893 | $14.7M |
| Atlas Venture Life Science Advisors, LLC | 1.63% | No change | 1,137,149 | $12.9M |
| Balyasny Asset Management L.P. | 0.02% | New | 1,040,054 | $11.8M |
| Venrock Adviser, LLC | 0.43% | New | 1,009,500 | $11.4M |
| Affinity Asset Advisors, LLC | 0.48% | New | 706,904 | $8.0M |
| Nantahala Capital Management, LLC | 0.47% | Add +10.0% | 660,036 | $7.5M |
| ADAR1 Capital Management, LLC | 0.37% | New | 540,054 | $6.1M |
| BlackRock, Inc. | 0.00% | Add +0.6% | 460,006 | $5.2M |
| Driehaus Capital Management LLC | 0.04% | New | 450,045 | $5.1M |
| TCG Crossover Management, LLC | 0.13% | No change | 416,301 | $4.7M |
| Siren, L.L.C. | 0.11% | No change | 347,718 | $3.9M |
| Vanguard Capital Management LLC | 0.00% | — | 310,913 | $3.5M |
| 72 Investment Holdings, LLC | 6.32% | No change | 276,831 | $3.1M |
| AQR Capital Management | 0.00% | Add +558.7% | 267,755 | $3.0M |
| Adage Capital Partners Gp, L.L.C. | 0.00% | New | 228,400 | $2.6M |
| Geode Capital Management, LLC | 0.00% | Add +6.7% | 173,643 | $2.0M |
| Two Sigma Investments, LP | 0.00% | Add +109.5% | 165,472 | $1.9M |
| Vanguard Portfolio Management LLC | 0.00% | — | 148,559 | $1.7M |
| State Street Corp. | 0.00% | Reduce -4.0% | 140,341 | $1.6M |
| Renaissance Technologies | 0.00% | Add +81.9% | 136,227 | $1.5M |
| Jane Street Group, LLC | 0.00% | Reduce -59.9% | 115,704 | $1.3M |
| Kalehua Capital Management LLC | 0.88% | New | 109,376 | $1.2M |
| Millennium Management | 0.00% | Reduce -60.5% | 63,606 | $720K |
| F/m Investments LLC | 0.05% | Reduce -4.1% | 62,855 | $712K |
| Emerald Mutual Fund Advisers Trust | 0.03% | Reduce -4.1% | 62,855 | $712K |
| JPMorgan Chase & Co. | 0.00% | Add +2313.7% | 68,500 | $704K |
| XTX Topco Ltd | 0.01% | Add +6.0% | 60,472 | $685K |
| Northern Trust Corp. | 0.00% | Add +3.7% | 57,702 | $653K |
| Trexquant Investment LP | 0.00% | New | 56,208 | $636K |
| Goldman Sachs Group Inc. | 0.00% | Reduce -2.7% | 50,541 | $572K |
| Raymond James Financial Inc. | 0.00% | Add +86.0% | 42,838 | $485K |
| Boothbay Fund Management, LLC | 0.01% | New | 42,000 | $475K |
| Acadian Asset Management LLC | 0.00% | Add +23.8% | 41,825 | $471K |
| Vanguard Fiduciary Trust Co. | 0.00% | — | 41,541 | $470K |
| Morgan Stanley | 0.00% | Reduce -41.0% | 41,123 | $466K |
| FMR LLC | 0.00% | Add +2.8% | 38,900 | $440K |
| Quantinno Capital Management LP | 0.00% | Add +30.4% | 35,978 | $407K |
| Marshall Wace, LLP | 0.00% | Add +73.7% | 34,343 | $389K |
| Citadel Advisors | 0.00% | Reduce -47.0% | 30,914 | $350K |
| AIHC Capital Management Ltd | 0.29% | No change | 30,265 | $343K |
| Mariner, LLC | 0.00% | New | 25,819 | $292K |
| Engineers Gate Manager LP | 0.00% | Reduce -11.8% | 23,702 | $268K |
| Bank of New York Mellon Corp | 0.00% | Add +15.3% | 21,730 | $246K |
| UBS Group AG | 0.00% | Add +8.4% | 21,676 | $245K |
| Quadrature Capital Ltd | 0.00% | Reduce -24.8% | 20,356 | $230K |
| Algert Global LLC | 0.00% | Reduce -29.1% | 19,185 | $217K |
| Susquehanna Portfolio Strategies, LLC | 0.00% | New | 19,125 | $216K |
| Guggenheim Capital LLC | 0.00% | Add +35.0% | 14,097 | $160K |
| Charles Schwab Investment Management Inc. | 0.00% | Reduce -18.0% | 13,394 | $152K |
| Ieq Capital, LLC | 0.00% | New | 12,777 | $145K |
| HRT Financial LP | 0.00% | New | 10,790 | $122K |
| Deutsche Bank AG | 0.00% | Reduce -17.4% | 10,544 | $119K |
| Rhumbline Advisers | 0.00% | Reduce -3.9% | 9,850 | $111K |
| Cwm, LLC | 0.00% | Add +3293.1% | 9,772 | $111K |
| MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. | 0.00% | Add +2.2% | 3,214 | $36K |
| New York State Common Retirement Fund | 0.00% | No change | 3,000 | $34K |
| Wells Fargo & Company | 0.00% | Reduce -65.6% | 2,589 | $29K |
| BNP Paribas Financial Markets | 0.00% | Add +58.3% | 2,354 | $27K |
| Russell Investments Group, Ltd. | 0.00% | Add +9.6% | 2,115 | $24K |
| Vanguard Global Advisers, LLC | 0.00% | — | 1,929 | $22K |
| North Star Investment Management Corp. | 0.00% | No change | 1,800 | $20K |
| Tower Research Capital LLC (TRC) | 0.00% | Add +18.2% | 1,644 | $19K |
| Police & Firemen's Retirement System of New Jersey | 0.00% | No change | 1,373 | $16K |
| Essential Partners LLC | 0.01% | New | 1,322 | $15K |
| TD Waterhouse Canada Inc. | 0.00% | Add +1.0% | 808 | $10K |
| PNC Financial Services Group, Inc. | 0.00% | Add +12.2% | 830 | $9K |
| GAMMA Investing LLC | 0.00% | Add +622.5% | 737 | $8K |
| Versant Capital Management, Inc | 0.00% | New | 691 | $8K |
| MAI Capital Management | 0.00% | Add +12020.0% | 606 | $7K |
| Ameritas Investment Partners, Inc. | 0.00% | No change | 598 | $7K |
| Legal & General Group Plc | 0.00% | No change | 526 | $6K |
| Duncker Streett & Co. Inc. | 0.00% | No change | 437 | $5K |
| EverSource Wealth Advisors, LLC | 0.00% | New | 379 | $4K |
| Citigroup Inc. | 0.00% | Reduce -49.3% | 308 | $3K |
| Allworth Financial LP | 0.00% | Add +29000.0% | 291 | $3K |
| Advisory Services Network, LLC | 0.00% | New | 245 | $3K |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC | 0.00% | Add +147.3% | 225 | $3K |
| Sterling Capital Management LLC | 0.00% | Reduce -52.0% | 220 | $2K |
| Osaic Holdings, Inc. | 0.00% | Reduce -90.5% | 135 | $2K |
| True Wealth Design, LLC | 0.00% | New | 99 | $1K |
| Royal Bank of Canada | 0.00% | Reduce -53.6% | 104 | $1K |
| Arax Advisory Partners | 0.00% | New | 86 | $974 |
| Rothschild Investment LLC | 0.00% | Add +1100.0% | 72 | $815 |
| Keating Financial Advisory Services, Inc. | 0.00% | No change | 63 | $713 |
| Root Financial Partners, LLC | 0.00% | New | 63 | $713 |
| Farther Finance Advisors, LLC | 0.00% | New | 54 | $683 |
| Optiver Holding B.V. | 0.00% | Reduce -48.3% | 60 | $679 |
| IFP Advisors, Inc | 0.00% | Add +12.5% | 45 | $509 |
| Wealth Preservation Advisors, LLC | 0.00% | New | 44 | $498 |
| Bare Financial Services, Inc | 0.00% | New | 44 | $498 |
| Nisa Investment Advisors, LLC | 0.00% | New | 40 | $453 |
| Fortitude Family Office, LLC | 0.00% | New | 39 | $441 |
| Basecamp Wealth Advisors LLC | 0.00% | New | 25 | $283 |
| SJS Investment Consulting Inc. | 0.00% | New | 22 | $250 |
| Sunbelt Securities, Inc. | 0.00% | Add +1600.0% | 17 | $192 |
| Fifth Third Bancorp | 0.00% | New | 11 | $125 |
| JPL Wealth Management, LLC | 0.00% | New | 2 | $23 |
| SBI Securities Co., Ltd. | 0.00% | No change | 1 | $11 |
"% of holder's portfolio" is KRRO's weight in each manager's 13F, not the share of Korro Bio Inc. the manager owns.