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 7 sales; 106 institutions reported holding it in 13F filings for Q2 2026, worth $190.1M in total; no superinvestor holds it.
Q4 2025 vs. Q3 2025
How the institutions holding Korro Bio, Inc. changed between Q3 2025 and Q4 2025.
All holders in Q4 2025All holders in Q3 2025
| Measure | Q3 2025 | Of which not filed for Q4 2025 | Q4 2025 | Change |
|---|---|---|---|---|
| Holders | 92 | 1 | 83 | −8 |
| Shares | 9.76M | 368.1K | 7.56M | −1.83M (−19.5%) |
| Value | $465.5M | $17.6M | $60.6M | −$387.3M (−86.5%) |
1 institution that held it in Q3 2025 haven't filed for Q4 2025 yet. Not filing isn't selling, so the changes leave them out.
New holders (22)
Institutions that held Korro Bio, Inc. at the end of Q4 2025 but not at the end of Q3 2025.
| Institution | Shares | Value | % of portfolio |
|---|---|---|---|
| Lynx1 Capital Management LP | 677,915 | $5.43M | 1.10% |
| Nantahala Capital Management, LLC | 600,000 | $4.81M | 0.29% |
| Jane Street Group, LLC | 288,457 | $2.31M | 0.00% |
| Susquehanna International Group, LLP | 196,827 | $1.58M | 0.00% |
| Graham Capital Management, L.P. | 40,766 | $326.5K | 0.01% |
| Acadian Asset Management LLC | 33,790 | $270.0K | 0.00% |
| AIHC Capital Management Ltd | 30,265 | $242.4K | 0.23% |
| Simplex Trading, LLC | 28,247 | $226.3K | 0.01% |
| Quadrature Capital Ltd | 27,064 | $216.8K | 0.00% |
| Engineers Gate Manager LP | 26,885 | $215.3K | 0.00% |
| Marshall Wace, LLP | 19,772 | $158.4K | 0.00% |
| Jain Global LLC | 10,574 | $84.7K | 0.00% |
| Guggenheim Capital LLC | 10,439 | $83.6K | 0.00% |
| Group One Trading, L.P. | 4,000 | $32.0K | 0.00% |
| TD Waterhouse Canada Inc. | 800 | $6.40K | 0.00% |
| Federated Hermes, Inc. | 302 | $2.42K | 0.00% |
| UBS Asset Management Americas Inc | 91 | $729 | 0.00% |
| Keating Financial Advisory Services, Inc. | 63 | $505 | 0.00% |
| Global Retirement Partners, LLC | 35 | $280 | 0.00% |
| Rothschild Investment LLC | 6 | $48 | 0.00% |
| Sunbelt Securities, Inc. | 1 | $8 | 0.00% |
| Los Angeles Capital Management LLC | 110 | – | – |
Sold out (30)
Institutions that held Korro Bio, Inc. at the end of Q3 2025 and filed for Q4 2025 without it.
Not filed for Q4 2025 yet (1)
Institutions that held Korro Bio, Inc. at the end of Q3 2025 and haven't filed a 13F for Q4 2025. Not filing isn't selling, so they aren't counted as sold out.
| Institution | Shares, Q3 2025 | Value, Q3 2025 |
|---|---|---|
| Qiming U.S. Ventures Management, LLC | 368,085 | $17.6M |