13F reference period
Q2 2026
Security Snapshot
Korro Bio, Inc. - Common Stock (KRRO) Institutional Ownership
CUSIP: 500946108
13F Institutional Holders and Ownership History from Q4 2023 to Q3 2026
Institutions Reporting
106
Shares (Excl. Options)
14.42M
Full value: 14,424,410 · shares · 30 Jun 2026Price
$13.18
The headline uses the Q2 2026 reference period after its reporting deadline. Available reports may still be incomplete or amended. Newer periods in the history table contain incoming reports and may be incomplete.
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- Security type / class
- Equity / Common Stock
- Symbol
- KRRO on Nasdaq
- All holders as of 30 Jun 2026
- Q2 2026
- Total 13F shares
- 14,424,410
- Total 13F value
- $190,105,978
- Portfolio coverage rank
- 0%
- Share change
- +1,608,269
- Value change
- +$21,468,692
- Number of holders
- 106
- Shares outstanding
- 14,649,245
- SEC-reported price per share
- $9.91
Latest holder snapshot
5 signals
Issuer context
Names, identifiers, and filing context for this profile.
2 identity fields
13F Shares, Excluding Options vs Price
13F Value, Excluding Options
Total Investors
Filing notes and source
Key facts
- KRRO - Korro Bio, Inc. - Common Stock is tracked under CUSIP 500946108.
- 106 institutions reported positions in Q2 2026.
- 11 significant owners is listed from Schedule 13D/13G reporting.
Change
- Holder count moved from 98 to 106 between Q1 2026 and Q2 2026.
- SEC-reported value moved from to
$144.84M
Full value: $144,841,768 · USD · 31 Mar 2026.$190.11M
Full value: $190,105,978 · USD · 30 Jun 2026
Research use
- You can quickly see who holds this security, then open quarter and manager detail pages for full evidence.
- 13F and Schedule 13D/13G sections are kept together so you can cross-check institutional and beneficial ownership context.
Evidence
Source: SEC Form 13F
Open SEC evidence
Latest holder context comes from 106 institutions filings for Q2 2026.
Security key
500946108
13F reference period
Q2 2026
13F holders
106
13D/G owners
11
CIK / CUSIP context first
Open Q2 2026 holders
KRRO full holder history
Korro Bio, Inc. SEC filings
Korro Bio, Inc. company facts
Korro Bio, Inc. insider transactions
Broader feeds
Recent Quarterly Holder Reports
Open recent reporting periods for CUSIP 500946108:
13D/G owners
Significant owners
Large-stake holder rows connected to Schedule 13D/G evidence.
Rows
11
Security
KRRO
| Filer | Ownership | Change % | Holdings Value | Net Change | Nb Shares | Change % | Reporting Name | Report Period |
|---|---|---|---|---|---|---|---|---|
| Lynx1 Capital Management LP | 11% | +36% | $18,351,871 | +$9,599,630 | 1,538,296 | +110% | Lynx1 Capital Management LP | 31 Mar 2026 |
| Venrock Healthcare Capital Partners III, L.P. | 9.9% | $17,760,012 | 1,488,685 | Venrock Healthcare Capital Partners III, L.P. | 10 Mar 2026 | |||
| New Enterprise Associates 17, L.P. | 9.9% | $17,130,522 | 1,456,677 | Ali Behbahani | 10 Mar 2026 | |||
| BALYASNY ASSET MANAGEMENT L.P. | 6.6% | $13,857,960 | 951,783 | BALYASNY ASSET MANAGEMENT L.P. | 30 Jun 2026 | |||
| BlackRock, Inc. | 4.9% | -6% | $7,113,814 | -$294,666 | 717,813 | -4% | BlackRock, Inc. | 30 Sep 2026 |
| Atlas Venture Fund XI, L.P. | 4.9% | $10,287,455 | 706,556 | Atlas Venture Fund XI, L.P. | 24 Jun 2026 | |||
| Nantahala Capital Management, LLC | 6.4% | $5,394,000 | 600,000 | Nantahala Capital Management, LLC | 31 Dec 2025 | |||
| CITADEL ADVISORS LLC | 3.9% | $6,163,449 | 369,733 | Citadel Advisors LLC | 31 Dec 2024 | |||
| Deep Track Capital, LP | 3% | $3,638,575 | 277,966 | Deep Track Capital, LP | 30 Jun 2025 | |||
| FMR LLC | 0.4% | $303,227 | 37,857 | FMR LLC | 31 Dec 2025 | |||
| ALLIANCEBERNSTEIN L.P. | 0.1% | -92% | $100,793 | -$9,138,050 | 7,700 | -99% | AllianceBernstein L.P. | 30 Jun 2025 |
As of 30 Jun 2026,
106
institutional investors reported holding
shares of
Korro Bio, Inc. - Common Stock (KRRO).
This represents
98%
of the company’s total
outstanding shares.
14.42M
Full value: 14,424,410 · shares · 30 Jun 202614.65M
Full value: 14,649,245 · shares · Stored outstanding share count13F concentration
Top 25 institutional shareholders
Largest 13F positions for this security by reported shares and value.
Top holder share
89%
| Institution | Ownership % | Shares Held | Share Change % | Portfolio % | Holdings Value |
|---|---|---|---|---|---|
| Lynx1 Capital Management LP | 11% | 1,538,296 | 0% | 2.3% | $20,274,741 |
| NEA Management Company, LLC | 8.9% | 1,297,893 | 0% | 1.1% | $17,106,230 |
| Venrock Adviser, LLC | 6.9% | 1,009,500 | 0% | 0.4% | $13,305,210 |
| Atlas Venture Life Science Advisors, LLC | 6.6% | 962,884 | -15% | 1.4% | $12,690,811 |
| Balyasny Asset Management L.P. | 6.5% | 951,783 | -8.5% | 0.02% | $12,544,500 |
| BlackRock, Inc. | 5.6% | 817,621 | +78% | 0% | $10,776,245 |
| Affinity Asset Advisors, LLC | 4.8% | 706,904 | 0% | 0.46% | $9,316,995 |
| Nantahala Capital Management, LLC | 4.5% | 660,036 | 0% | 0.53% | $8,699,274 |
| ADAGE CAPITAL PARTNERS GP, L.L.C. | 3.7% | 540,968 | +137% | 0.01% | $7,129,958 |
| ADAR1 Capital Management, LLC | 3.7% | 540,054 | 0% | 0.34% | $7,117,912 |
| VANGUARD CAPITAL MANAGEMENT LLC | 3.1% | 454,778 | +46% | 0% | $5,993,974 |
| Driehaus Capital Management LLC | 3.1% | 450,045 | 0% | 0.03% | $5,931,593 |
| TCG Crossover Management, LLC | 2.8% | 416,301 | 0% | 0.13% | $5,486,847 |
| Kalehua Capital Management LLC | 2.8% | 405,040 | +270% | 3.1% | $5,338,427 |
| Siren, L.L.C. | 2.4% | 347,718 | 0% | 0.09% | $4,582,923 |
| AQR CAPITAL MANAGEMENT LLC | 2% | 298,974 | +12% | 0% | $3,940,478 |
| GEODE CAPITAL MANAGEMENT, LLC | 2% | 296,870 | +71% | 0% | $3,913,148 |
| 72 Investment Holdings, LLC | 1.9% | 276,831 | 0% | 7.3% | $3,648,633 |
| STATE STREET CORP | 1.6% | 232,587 | +66% | 0% | $3,065,497 |
| VANGUARD PORTFOLIO MANAGEMENT LLC | 1.5% | 223,551 | +50% | 0% | $2,946,402 |
| TWO SIGMA INVESTMENTS, LP | 1.2% | 178,071 | +7.6% | 0% | $2,346,976 |
| JPMORGAN CHASE & CO | 0.85% | 124,726 | +82% | 0% | $1,645,760 |
| MILLENNIUM MANAGEMENT LLC | 0.81% | 118,434 | +86% | 0% | $1,560,960 |
| GOLDMAN SACHS GROUP INC | 0.8% | 116,983 | +131% | 0% | $1,541,836 |
| RENAISSANCE TECHNOLOGIES LLC | 0.75% | 110,524 | -19% | 0% | $1,456,706 |
Quarter history
Institutional holders across reporting periods
Holder count, reported shares/value, and median price by quarter.
Periods
12
Headline period
Q2 2026
Rows shown
1-12 of 12
| Period | 13F Shares, Excl. Options | Value, Excl. Options | Value Change | Price (Median) | Investors |
|---|---|---|---|---|---|
| 2026 Q3 | 30,020 | $295,335 | +$72,113 | $9.91 | 17 |
| 2026 Q2 | 14,424,410 | $190,105,978 | +$21,468,692 | $13.18 | 106 |
| 2026 Q1 | 12,801,623 | $144,841,768 | +$60,140,705 | $11.32 | 98 |
| 2025 Q4 | 7,561,789 | $60,569,573 | -$128,796,872 | $8.01 | 82 |
| 2025 Q3 | 9,720,188 | $465,499,291 | +$39,225,055 | $47.89 | 90 |
| 2025 Q2 | 8,912,049 | $111,311,830 | -$12,666,834 | $12.49 | 68 |
| 2025 Q1 | 9,704,902 | $168,963,706 | -$381,515 | $17.41 | 75 |
| 2024 Q4 | 9,447,026 | $359,649,124 | +$39,856,612 | $38.07 | 83 |
| 2024 Q3 | 8,537,080 | $285,308,897 | -$12,430,500 | $33.42 | 70 |
| 2024 Q2 | 8,435,947 | $285,725,569 | +$37,204,728 | $33.87 | 63 |
| 2024 Q1 | 6,909,485 | $618,593,997 | +$31,054,435 | $90.00 | 48 |
| 2023 Q4 | 5,491,489 | $260,365,563 | +$260,365,563 | $47.93 | 38 |