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Ken Griffin's Korro Bio, Inc. (KRRO) position

Yes: as of Q1 2026, Ken Griffin holds 31K shares of KRRO worth an amount we cannot price (0.0% of the disclosed portfolio). Last quarter the position was reduced by 47.0%. First disclosed Q4 2023.
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Current value
an amount we cannot price
Shares held
31K
% of portfolio
0.0%
Quarter-end price
No quarter-end price available

Average buy price is hidden here because at least one covered purchase quarter has no usable local mean price.

KRRO price vs Griffin's position

1Y 3Y 5Y MAX
Dates
$10$12$14$16← Earlier —3 purchases, 6 sells
Average closing price · filing quarter
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Price range · filing quarter
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Every quarterly change

Quarter Action Shares change Est. value change Δ Own Shares held Filing date
Q1 2026 Reduced −27K – −47.0% 31K May 15, 2026
Q4 2025 Reduced −96K – −62.1% 58K Feb 17, 2026
Q3 2025 Reduced −197K – −56.1% 154K Nov 14, 2025
Q2 2025 Added +97K – +38.5% 351K Aug 14, 2025
Q1 2025 Reduced −116K – −31.5% 253K May 15, 2025
Q4 2024 Reduced −159K – −30.1% 370K Feb 14, 2025
Q3 2024 Unchanged – – – 529K Nov 14, 2024
Q2 2024 Reduced −7 – 0.0% 529K Aug 14, 2024
Q1 2024 Added +7 – 0.0% 529K May 15, 2024
Q4 2023 New +529K – – 529K Feb 14, 2024
Data through Q1 2026 · filed May 15, 2026
10 grouped rows from 10 quarters

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Common questions

Does Ken Griffin own KRRO?

Yes. As of Q1 2026, Ken Griffin disclosed 31K shares of KRRO, worth an amount we cannot price. All figures come from SEC 13F filings for Q1 2026, the latest disclosed quarter.

When did Ken Griffin buy KRRO?

Ken Griffin first disclosed a KRRO position in Q4 2023; every quarterly buy and sell since is in the table above. All figures come from SEC 13F filings for Q1 2026, the latest disclosed quarter.

Did Ken Griffin sell KRRO?

The quarter-by-quarter table above shows each sale and reduction Ken Griffin disclosed in KRRO. All figures come from SEC 13F filings for Q1 2026, the latest disclosed quarter.

How many shares of KRRO does Ken Griffin own?

Ken Griffin disclosed 31K shares of KRRO as of Q1 2026. All figures come from SEC 13F filings for Q1 2026, the latest disclosed quarter.

What price did Ken Griffin pay for KRRO?

Ken Griffin began building the KRRO position before our 13F history starts, so an exact average buy price cannot be estimated without understating it. All figures come from SEC 13F filings for Q1 2026, the latest disclosed quarter.

How are the estimated trade prices calculated?

13F filings disclose quarter-end holdings, not trade dates or execution prices. These estimates use each covered quarter's average market price; the add average excludes the opening position and quarters without price data. All figures come from SEC 13F filings for Q1 2026, the latest disclosed quarter.