Ticker · CUSIP 500946108

KRRO

KORRO BIO INC
···Share
Holders (tracked)
7
Combined shares
707,652
Combined value
$5.67M
Last close
Quarter
2025Q4
Tracked holders · last 8 quarters
+1 vs previous quarter over the last 8.
752024Q12025Q4

SEC event timeline

12 events
  1. +14,529 shares · 2025Q4
    13F
  2. −531,969 shares · 2025Q4
    13F
  3. −95,599 shares · 2025Q4
    13F
  4. −99,241 shares · 2025Q4
    13F
  5. −7,760 shares · 2025Q4
    13F
  6. +34,500 shares · 2025Q4
    13F
  7. +48,407 shares · 2025Q3
    13F
  8. +4,650 shares · 2025Q3
    13F
  9. −8,105 shares · 2025Q3
    13F
  10. +27,709 shares · 2025Q3
    13F
  11. −24,383 shares · 2025Q3
    13F
  12. −5,300 shares · 2025Q3
    13F

Insider activity

No insider transactions in the last 30 days.

Who moved on this name in 2025Q4

13F transactions reported for the latest quarter, grouped by direction.
New positions0
Added to2
Exited1

Institutional ownership over time

Distinct super-investors holding this ticker · combined dollar value, by quarter.
QuarterHoldersCombined value
2023Q4
5
$41.6M
2024Q1
5
$83.1M
2024Q2
5
$50.2M
2024Q3
4
$35.4M
2024Q4
3
$36.5M
2025Q1
3
$15.4M
2025Q2
6
$15.7M
2025Q3
6
$52.7M
2025Q4
7
$5.7M

Who owns KRRO

7 super-investors · 2025Q4
Tracked stake
707.7K
shares
Combined value
$6M
% of shares outstanding
shares-out unknown
Quarter action mix
Added2Trim5
#ManagerSharesValue
1Ken Griffin
Citadel Advisors
279.0K$2M
2Izzy Englander
Millennium Mgmt
161.1K$1M
3Two Sigma Investments79.0K$633K
4Renaissance Technologies74.9K$600K
5Ken Griffin
Citadel Advisors
58.3K$467K
6AQR Capital Management40.6K$326K
7Ken Griffin
Citadel Advisors
14.7K$118K

Recent moves

20 transactions
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