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 |
|---|---|---|---|---|---|
| SBI Securities Co., Ltd. | 1 | $13 | 0.00% | 00.0% | Unchanged |
| JPL Wealth Management, LLC | 3 | $40 | 0.00% | +1+50.0% | Added |
| Clearstead Advisors, LLC | 19 | $252 | 0.00% | +19 | New |
| Nisa Investment Advisors, LLC | 20 | $264 | 0.00% | −20−50.0% | Reduced |
| SJS Investment Consulting Inc. | 29 | $383 | 0.00% | +7+31.8% | Added |
| Wealth Enhancement Trust Services, Inc. | 33 | $435 | 0.00% | +33 | New |
| Global Retirement Partners, LLC | 35 | $461 | 0.00% | +35 | New |
| Timbuktu Capital Management, LLC | 38 | $501 | 0.00% | +38 | New |
| Basecamp Wealth Advisors LLC | 45 | $593 | 0.00% | +20+80.0% | Added |
| Optiver Holding B.V. | 60 | $791 | 0.00% | 00.0% | Unchanged |
| California State Teachers Retirement System | 93 | $1.23K | 0.00% | +93 | New |
| Farther Finance Advisors, LLC | 115 | $1.52K | 0.00% | +61+113.0% | Added |
| Rothschild Investment LLC | 123 | $1.62K | 0.00% | +51+70.8% | Added |
| Advisor Group Holdings, Inc. | 134 | $1.77K | 0.00% | −1−0.7% | Reduced |
| Essential Partners LLC | 180 | $2.37K | 0.00% | −1,142−86.4% | Reduced |
| Sterling Capital Management LLC | 191 | $2.52K | 0.00% | −29−13.2% | Reduced |
| True Wealth Design, LLC | 192 | $2.53K | 0.00% | +93+93.9% | Added |
| The PNC Financial Services Group, Inc. | 193 | $2.54K | 0.00% | −637−76.7% | Reduced |
| UBS Asset Management Americas Inc | 225 | $2.97K | 0.00% | 00.0% | Unchanged |
| Royal Bank of Canada | 352 | $4.00K | 0.00% | +248+238.5% | Added |
| IFP Advisors, Inc | 418 | $5.51K | 0.00% | +373+828.9% | Added |
| Duncker Streett & Co Inc | 437 | $5.76K | 0.00% | 00.0% | Unchanged |
| EverSource Wealth Advisors, LLC | 498 | $6.56K | 0.00% | +119+31.4% | Added |
| Allworth Financial LP | 538 | $7.09K | 0.00% | +247+84.9% | Added |
| Versant Capital Management, Inc | 539 | $7.10K | 0.00% | −152−22.0% | Reduced |
| Ameritas Investment Partners, Inc. | 598 | $7.88K | 0.00% | 00.0% | Unchanged |
| TD Waterhouse Canada Inc. | 808 | $11.0K | 0.00% | 00.0% | Unchanged |
| GAMMA Investing LLC | 861 | $11.3K | 0.00% | +124+16.8% | Added |
| Legal & General Group Plc | 1,082 | $14.3K | 0.00% | +556+105.7% | Added |
| Tower Research Capital LLC (TRC) | 1,587 | $20.9K | 0.00% | −57−3.5% | Reduced |
| North Star Investment Management Corp. | 1,800 | $23.7K | 0.00% | 00.0% | Unchanged |
| Vanguard Global Advisers, LLC | 1,929 | $25.4K | 0.00% | 00.0% | Unchanged |
| Simplex Trading, LLC | 1,975 | $26.0K | 0.00% | +1,975 | New |
| New York State Common Retirement Fund | 3,000 | $39.5K | 0.00% | 00.0% | Unchanged |
| Police & Firemen's Retirement System of New Jersey | 4,627 | $61.0K | 0.00% | +3,254+237.0% | Added |
| Russell Investments Group, Ltd. | 4,939 | $65.1K | 0.00% | +2,824+133.5% | Added |
| Mirae Asset Global ETFs Holdings Ltd. | 5,130 | $67.6K | 0.00% | +1,916+59.6% | Added |
| Citigroup Inc | 5,169 | $68.1K | 0.00% | +4,861+1,578.2% | Added |
| SRS Capital Advisors, Inc. | 5,595 | $73.7K | 0.00% | +5,509+6,405.8% | Added |
| Wells Fargo & Company | 9,564 | $126.1K | 0.00% | +6,975+269.4% | Added |
| American Century Companies Inc | 10,153 | $133.8K | 0.00% | +10,153 | New |
| Engineers Gate Manager LP | 10,217 | $134.7K | 0.00% | −13,485−56.9% | Reduced |
| Alliancebernstein L.P. | 12,180 | $137.9K | 0.00% | +12,180 | New |
| Cerity Partners LLC | 10,794 | $142.3K | 0.00% | +10,794 | New |
| Dimensional Fund Advisors LP | 11,406 | $150.3K | 0.00% | +11,406 | New |
| Trexquant Investment LP | 11,482 | $151.3K | 0.00% | −44,726−79.6% | Reduced |
| Rhumbline Advisers | 12,401 | $163.4K | 0.00% | +2,551+25.9% | Added |
| Wealth Enhancement Advisory Services, LLC | 11,508 | $167.6K | 0.00% | +11,508 | New |
| Mercer Global Advisors Inc | 12,888 | $169.9K | 0.00% | +12,888 | New |
| Susquehanna Portfolio Strategies, LLC | 13,500 | $177.9K | 0.00% | −5,625−29.4% | Reduced |
| Algert Global LLC | 14,212 | $187.3K | 0.00% | −4,973−25.9% | Reduced |
| Acadian Asset Management LLC | 14,480 | $189.0K | 0.00% | −27,345−65.4% | Reduced |
| Nuveen, LLC | 15,861 | $209.0K | 0.00% | +15,861 | New |
| Deutsche Bank AG | 15,948 | $210.2K | 0.00% | +5,404+51.3% | Added |
| HSBC Holdings PLC | 17,812 | $232.8K | 0.00% | +17,812 | New |
| Price T Rowe Associates Inc | 17,634 | $233.0K | 0.00% | +17,634 | New |
| Guggenheim Capital LLC | 18,400 | $242.5K | 0.00% | +4,303+30.5% | Added |
| Marshall Wace, LLP | 19,060 | $251.2K | 0.00% | −15,283−44.5% | Reduced |
| Ieq Capital, LLC | 21,246 | $280.0K | 0.00% | +8,469+66.3% | Added |
| Morgan Stanley | 22,501 | $296.6K | 0.00% | −18,622−45.3% | Reduced |
| Charles Schwab Investment Management Inc | 24,110 | $317.8K | 0.00% | +10,716+80.0% | Added |
| Panagora Asset Management Inc | 25,572 | $337.0K | 0.00% | +25,572 | New |
| BNP Paribas Arbitrage, SA | 26,254 | $346.0K | 0.00% | +23,900+1,015.3% | Added |
| Mariner, LLC | 27,908 | $367.8K | 0.00% | +2,089+8.1% | Added |
| AIHC Capital Management Ltd | 30,265 | $398.9K | 0.38% | 00.0% | Unchanged |
| Bank of New York Mellon Corp | 31,730 | $418.2K | 0.00% | +10,000+46.0% | Added |
| Jump Financial, LLC | 33,906 | $446.9K | 0.00% | +33,906 | New |
| D. E. Shaw & Co., Inc. | 34,213 | $450.9K | 0.00% | +34,213 | New |
| Boothbay Fund Management, LLC | 35,853 | $472.5K | 0.01% | −6,147−14.6% | Reduced |
| FMR LLC | 38,975 | $513.7K | 0.00% | +75+0.2% | Added |
| Citadel Advisors LLC | 40,390 | $532.3K | 0.00% | +9,476+30.7% | Added |
| XTX Topco Ltd | 47,819 | $630.3K | 0.01% | −12,653−20.9% | Reduced |
| Raymond James Financial Inc | 48,920 | $644.8K | 0.00% | +6,082+14.2% | Added |
| Bank of America Corp | 51,707 | $681.5K | 0.00% | +51,707 | New |
| Quantinno Capital Management LP | 52,720 | $694.9K | 0.00% | +16,742+46.5% | Added |
| Walleye Capital LLC | 54,289 | $715.5K | 0.00% | +54,289 | New |
| 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 |
| Vanguard Fiduciary Trust Co | 74,901 | $987.2K | 0.00% | +33,360+80.3% | Added |
| Northern Trust Corp | 88,089 | $1.16M | 0.00% | +30,387+52.7% | Added |
| UBS Group AG | 105,453 | $1.39M | 0.00% | +83,777+386.5% | Added |
| Renaissance Technologies LLC | 110,524 | $1.46M | 0.00% | −25,703−18.9% | Reduced |
| Goldman Sachs Group Inc | 116,983 | $1.54M | 0.00% | +66,442+131.5% | Added |
| Millennium Management LLC | 118,434 | $1.56M | 0.00% | +54,828+86.2% | Added |
| JPMorgan Chase & Co | 124,726 | $1.65M | 0.00% | +56,226+82.1% | Added |
| Two Sigma Investments, LP | 178,071 | $2.35M | 0.00% | +12,599+7.6% | Added |
| Vanguard Portfolio Management LLC | 223,551 | $2.95M | 0.00% | +74,992+50.5% | Added |
| State Street Corp | 232,587 | $3.07M | 0.00% | +92,246+65.7% | Added |
| 72 Investment Holdings, LLC | 276,831 | $3.65M | 7.30% | 00.0% | Unchanged |
| Geode Capital Management, LLC | 296,870 | $3.91M | 0.00% | +123,227+71.0% | Added |
| AQR Capital Management LLC | 298,974 | $3.94M | 0.00% | +31,219+11.7% | Added |
| Siren, L.L.C. | 347,718 | $4.58M | 0.09% | 00.0% | Unchanged |
| Kalehua Capital Management LLC | 405,040 | $5.34M | 3.07% | +295,664+270.3% | Added |
| TCG Crossover Management, LLC | 416,301 | $5.49M | 0.13% | 00.0% | Unchanged |
| Driehaus Capital Management LLC | 450,045 | $5.93M | 0.03% | 00.0% | Unchanged |
| Vanguard Capital Management LLC | 454,778 | $5.99M | 0.00% | +143,865+46.3% | Added |
| ADAR1 Capital Management, LLC | 540,054 | $7.12M | 0.33% | 00.0% | Unchanged |
| Adage Capital Partners GP, L.L.C. | 540,968 | $7.13M | 0.01% | +312,568+136.9% | Added |
| Nantahala Capital Management, LLC | 660,036 | $8.70M | 0.53% | 00.0% | Unchanged |
| Affinity Asset Advisors, LLC | 706,904 | $9.32M | 0.46% | 00.0% | Unchanged |