KRRO Institutional Ownership
Who owns Korro Bio, Inc. and what the big funds did with it last quarter, from every SEC 13F filing. 107 funds reported holding KRRO at Jun 30, 2026, together owning 102.5% of the company.
- ▲67 buying vs 30 selling
- ▲Held by funds +15.5 pts
- ▲Funds holding +8
- ▲Superinvestors: 2 added, 1 cut
- ●Put/call not meaningful
What the filings show, not a forecast. Positions can be up to 45 days old and leave out short sales.
Funds holding and ownership
8 quartersQuarter over quarter
all 13F filers| Q2 2026 | This quarter | Q1 2026 | Change |
|---|---|---|---|
| Funds holding | 107 | 99 | +8.1% |
| In funds' top 10 | 4 | 4 | 0.0% |
| 13F shares | 15.1M | 12.8M | +17.8% |
| Held by funds | 102.5% | 86.9% | +15.5 pts |
| New positions | 19 | 29 | −34.5% |
| Increased | 48 | 33 | +45.5% |
| Reduced | 19 | 20 | −5.0% |
| Sold out | 11 | 15 | −26.7% |
| Calls (shares) | 0 | 0 | – |
| Puts (shares) | 0 | 0 | – |
| Put/call ratio | – | – | – |
Buyers vs sellers
adding or new vs cutting or sold outSuperinvestors in KRRO
All superinvestors →
Who owns KRRO
share of fund held shares- Index and passive funds14.8%
- Active managers and hedge funds81.3%
- Banks and brokers3.9%
- Pensions, insurers and other0.1%
The top 10 holders own 64.2% of all KRRO shares that funds reported. Groups are our own grouping of filers by name.
Filed so far for Q3 2026
17 funds changed their position- North Star Investment Management Corp.Added+19K sh
- Wealth Enhancement Advisory Services, LLCSold out−12K sh
- China Universal Asset Management Co., Ltd.New+5,678 sh
- IFP Advisors, IncTrimmed−353 sh
- Farther Finance Advisors, LLCAdded+176 sh
🔒 Free account: see all 17.
Top holders
Q2 2026| # | Fund | Of company | Shares | Value | Change |
|---|---|---|---|---|---|
| 1 | Lynx1 Capital Management LP | 10.45% | 1.5M | $20.3M | 0 |
| 2 | Nantahala Capital Management, LLC | 8.96% | 1.3M | $17.4M | +660K |
| 3 | NEA Management Company, LLC | 8.81% | 1.3M | $17.1M | 0 |
| 4 | Venrock Adviser, LLC | 6.86% | 1M | $13.3M | 0 |
| 5 | Atlas Venture Life Science Advisors, LLC | 6.54% | 963K | $12.7M | −174K |
| 6 | Balyasny Asset Management L.P. | 6.46% | 952K | $12.5M | −88K |
| 7 | BlackRock, Inc. | 5.55% | 818K | $10.8M | +358K |
| 8 | Affinity Asset Advisors, LLC | 4.80% | 707K | $9.3M | 0 |
| 9 | Adage Capital Partners Gp, L.l.c. | 3.67% | 541K | $7.1M | +313K |
| 10 | ADAR1 Capital Management, LLC | 3.67% | 540K | $7.1M | 0 |
- Nantahala Capital Management, LLC+660K sh+$8.7M
- BlackRock, Inc.+358K sh+$4.7M
- Adage Capital Partners Gp, L.l.c.+313K sh+$4.1M
- Kalehua Capital Management LLC+296K sh+$3.9M
- Vanguard Capital Management LLC+144K sh+$1.9M
- Geode Capital Management, LLC+123K sh+$1.6M
- State Street Corp+92K sh+$1.2M
- UBS Group AG+84K sh+$1.1M
- Atlas Venture Life Science Advisors, LLC−174K sh−$2.3M
- Jane Street Group, LLC−116K sh−$1.3M
- Balyasny Asset Management L.P.−88K sh−$1.2M
- Trexquant Investment LP−45K sh−$589K
- Acadian Asset Management LLC−27K sh−$357K
- Renaissance Technologies LLC−26K sh−$339K
- Morgan Stanley−19K sh−$245K
- Quadrature Capital Ltd−20K sh−$230K
KRRO institutional ownership FAQ
Who owns the most KRRO stock?
In Q2 2026 13F filings the largest holder of KRRO was Lynx1 Capital Management LP, followed by Nantahala Capital Management, LLC and NEA Management Company, LLC. Index fund managers are usually the biggest holders of large companies.
What percentage of KRRO is owned by institutions?
Funds that file 13F reports held 102.5% of KRRO's shares at Jun 30, 2026, compared with 86.9% a quarter earlier. That counts every manager with more than $100 million in US stocks.
Are hedge funds buying KRRO?
In Q2 2026, 67 funds bought KRRO (19 of them new positions) and 30 sold (11 sold out completely). Among well known investors, 2 added and 1 cut. Our fund sentiment for KRRO is strongly bullish.
What is KRRO's institutional put/call ratio?
Too few option positions were reported for a meaningful ratio.
How current is this KRRO ownership data?
13F filings show holdings at the end of each quarter and are due within 45 days, so positions can be up to six weeks old when they appear. We add each new filing within minutes, and the "filed so far" list shows funds that have already reported the next quarter.
For informational and educational purposes only. Not investment advice, and not a recommendation to buy or sell any security. Fund sentiment summarises what 13F filings show and is not a forecast. Holdings come from SEC Form 13F filings as reported and show positions at the end of the quarter, up to 45 days before the filing. A 13F leaves out short positions, cash, bonds and most foreign holdings. See all hedge fund holdings.