Latest Period
Q1 2026
Security Snapshot
Korro Bio, Inc. - Common Stock, par value $0.001 per share (KRRO) Institutional Ownership
CUSIP: 500946108
13F Institutional Holders and Ownership History from Q4 2023 to Q1 2026
Institutions Reporting
98
Shares (Excl. Options)
12,801,623
Price
$11.32
Save this security page for your next review
Keep this CUSIP in your watchlists so you can revisit quarter changes from one place. If you create an account from here, we will bring you back after verification.
- Security type / class
- Equity / Common Stock, par value $0.001 per share
- Symbol
- KRRO on Nasdaq
- All holders as of 31 Mar 2026
- Q1 2026
- Total 13F shares
- 12,801,623
- Total 13F value
- $144,841,594
- Portfolio coverage rank
- 0%
- Share change
- +5,225,841
- Value change
- +$60,140,777
- Number of holders
- 98
- Shares outstanding
- 14,376,598
- SEC-reported price per share
- $12.33
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
Key facts
- KRRO - Korro Bio, Inc. - Common Stock, par value $0.001 per share is tracked under CUSIP 500946108.
- 98 institutions reported positions in Q1 2026.
- 8 significant owners is listed from Schedule 13D/13G reporting.
Change
- Holder count moved from 82 to 98 between Q4 2025 and Q1 2026.
- SEC-reported value moved from $60,569,573 to $144,841,594.
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 98 institutions filings for Q1 2026.
Security key
500946108
Latest holder period
Q1 2026
13F holders
98
13D/G owners
8
CIK / CUSIP context first
Open Q1 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
8
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 | |||
| 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 31 Mar 2026, 98 institutional investors reported holding 12,801,623 shares of Korro Bio, Inc. - Common Stock, par value $0.001 per share (KRRO). This represents 89% of the company’s total 14,376,598 outstanding shares.
13F concentration
Top 25 institutional shareholders
Largest 13F positions for this security by reported shares and value.
Top holder share
82%
| Institution | Ownership % | Shares Held | Share Change % | Portfolio % | Holdings Value |
|---|---|---|---|---|---|
| Lynx1 Capital Management LP | 11% | 1,538,296 | +127% | 2.8% | $17,413,511 |
| NEA Management Company, LLC | 9% | 1,297,893 | +19% | 0.84% | $14,692,149 |
| Atlas Venture Life Science Advisors, LLC | 7.9% | 1,137,149 | 0% | 1.6% | $12,872,527 |
| Balyasny Asset Management L.P. | 7.2% | 1,040,054 | 0.02% | $11,773,411 | |
| Venrock Adviser, LLC | 7% | 1,009,500 | 0.43% | $11,427,540 | |
| Affinity Asset Advisors, LLC | 4.9% | 706,904 | 0.47% | $8,002,153 | |
| Nantahala Capital Management, LLC | 4.6% | 660,036 | +10% | 0.47% | $7,471,608 |
| ADAR1 Capital Management, LLC | 3.8% | 540,054 | 0.37% | $6,113,411 | |
| BlackRock, Inc. | 3.2% | 460,006 | +0.57% | 0% | $5,207,267 |
| Driehaus Capital Management LLC | 3.1% | 450,045 | 0.04% | $5,094,509 | |
| TCG Crossover Management, LLC | 2.9% | 416,301 | 0% | 0.13% | $4,712,527 |
| Siren, L.L.C. | 2.4% | 347,718 | 0% | 0.11% | $3,936,168 |
| VANGUARD CAPITAL MANAGEMENT LLC | 2.2% | 310,913 | 0% | 0% | $3,519,535 |
| 72 Investment Holdings, LLC | 1.9% | 276,831 | 0% | 6.3% | $3,133,727 |
| AQR CAPITAL MANAGEMENT LLC | 1.9% | 267,755 | +559% | 0% | $3,030,986 |
| ADAGE CAPITAL PARTNERS GP, L.L.C. | 1.6% | 228,400 | 0% | $2,585,488 | |
| GEODE CAPITAL MANAGEMENT, LLC | 1.2% | 173,643 | +6.7% | 0% | $1,965,961 |
| TWO SIGMA INVESTMENTS, LP | 1.2% | 165,472 | +110% | 0% | $1,873,143 |
| VANGUARD PORTFOLIO MANAGEMENT LLC | 1% | 148,559 | 0% | 0% | $1,681,688 |
| STATE STREET CORP | 0.98% | 140,341 | -4% | 0% | $1,588,660 |
| RENAISSANCE TECHNOLOGIES LLC | 0.95% | 136,227 | +82% | 0% | $1,542,090 |
| JANE STREET GROUP, LLC | 0.8% | 115,704 | -60% | 0% | $1,309,769 |
| Kalehua Capital Management LLC | 0.76% | 109,376 | 0.88% | $1,238,136 | |
| JPMORGAN CHASE & CO | 0.48% | 68,500 | +2314% | 0% | $704,180 |
| MILLENNIUM MANAGEMENT LLC | 0.44% | 63,606 | -61% | 0% | $720,020 |
Quarter history
Institutional holders across reporting periods
Holder count, reported shares/value, and median price by quarter.
Periods
10
Latest
Q1 2026
Rows shown
1-10 of 10
| Period | 13F Shares, Excl. Options | Value, Excl. Options | Value Change | Price (Median) | Investors |
|---|---|---|---|---|---|
| 2026 Q1 | 12,801,623 | $144,841,594 | +$60,140,777 | $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 |