Renaissance Technologies (RenTech)'s KRRO Position Overview
Renaissance Technologies (RenTech) (via Renaissance Technologies LLC) currently holds 110,524 shares of Korro Bio, Inc. (KRRO) worth $1.46 M, representing 0.00% of the portfolio. First purchased in 2023-Q4, this short-term holding has been held for 8 quarters.
Based on 13F filings, Renaissance Technologies (RenTech) has maintained this position in KRRO for several quarters, showing initial confidence in the investment. Largest addition occurred in Q1 2026, adding 61,327 shares. Largest reduction occurred in Q2 2026, reducing 25,703 shares.
Analysis based on 13F filings available since 2013 Q2
Renaissance Technologies (RenTech)'s Korro Bio (KRRO) Holding Value Over Time
Track share changes against reported price movement
Quarterly Korro Bio (KRRO) Trades by Renaissance Technologies (RenTech)
| Report Date | Bought/Sold (Sh.) | % Change | Qtr. End Shares | Reported Price |
|---|---|---|---|---|
| Q2 2026 | -25,703 | Reduce 18.87% | 110,524 | $13.18 |
| Q1 2026 | +61,327 | Add 81.88% | 136,227 | $11.32 |
| Q4 2025 | +34,500 | Add 85.40% | 74,900 | $8.01 |
| Q3 2025 | -5,300 | Reduce 11.60% | 40,400 | $47.89 |
| Q2 2025 | +45,700 | New Buy | 45,700 | $12.49 |
| Q2 2024 | -9,893 | Sold Out | 0 | $0.00 |
| Q4 2023 | +9,893 | New Buy | 9,893 | $47.91 |
Renaissance Technologies (RenTech)'s Korro Bio Investment FAQs
Renaissance Technologies (RenTech) first purchased Korro Bio, Inc. (KRRO) in Q4 2023, acquiring 9,893 shares, as reported in their 13F filing for that period. Note: Analysis reflects filings available since Q2 2013; earlier records may be incomplete.
Renaissance Technologies (RenTech) has held Korro Bio, Inc. (KRRO) for 8 quarters since Q4 2023.
Renaissance Technologies (RenTech)'s largest addition to Korro Bio, Inc. (KRRO) was in Q1 2026, adding 136,227 shares worth $1.54 M.
According to the latest 13F filing for Q2 2026, Renaissance Technologies (RenTech)'s firm, Renaissance Technologies LLC, owns 110,524 shares of Korro Bio, Inc. (KRRO), valued at approximately $1.46 M.
As of the Q2 2026 filing, Korro Bio, Inc. (KRRO) represents approximately 0.00% of Renaissance Technologies (RenTech)'s publicly disclosed stock portfolio, making it one of their key holdings.
Renaissance Technologies (RenTech)'s peak holding in Korro Bio, Inc. (KRRO) was 136,227 shares, as reported at the end of Q1 2026.