Renaissance Technologies (RenTech)'s AMPX Position Overview
Renaissance Technologies (RenTech) (via Renaissance Technologies LLC) currently holds 359,525 shares of Amprius Technologies, Inc. (AMPX) worth $6.06 M, representing 0.01% of the portfolio. First purchased in 2024-Q3, this short-term holding has been held for 7 quarters.
Based on 13F filings, Renaissance Technologies (RenTech) has maintained this position in AMPX for several quarters, showing initial confidence in the investment. Largest addition occurred in Q2 2025, adding 1.33 M shares. Largest reduction occurred in Q3 2025, reducing 1.33 M shares.
Analysis based on 13F filings available since 2013 Q2
Renaissance Technologies (RenTech)'s Amprius Technologies (AMPX) Holding Value Over Time
Track share changes against reported price movement
Quarterly Amprius Technologies (AMPX) Trades by Renaissance Technologies (RenTech)
| Report Date | Bought/Sold (Sh.) | % Change | Qtr. End Shares | Reported Price |
|---|---|---|---|---|
| Q1 2026 | +246,700 | Add 218.66% | 359,525 | $16.86 |
| Q4 2025 | +100,425 | Add 809.88% | 112,825 | $7.89 |
| Q3 2025 | -1.33 M | Reduce 99.08% | 12,400 | $10.52 |
| Q2 2025 | +1.33 M | Add 9251.39% | 1.35 M | $4.21 |
| Q1 2025 | -750,700 | Reduce 98.12% | 14,400 | $2.68 |
| Q4 2024 | +752,000 | Add 5740.46% | 765,100 | $2.80 |
| Q3 2024 | +13,100 | New Buy | 13,100 | $1.11 |
Renaissance Technologies (RenTech)'s Amprius Technologies Investment FAQs
Renaissance Technologies (RenTech) first purchased Amprius Technologies, Inc. (AMPX) in Q3 2024, acquiring 13,100 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 Amprius Technologies, Inc. (AMPX) for 7 quarters since Q3 2024.
Renaissance Technologies (RenTech)'s largest addition to Amprius Technologies, Inc. (AMPX) was in Q2 2025, adding 1,346,600 shares worth $5.67 M.
According to the latest 13F filing for Q1 2026, Renaissance Technologies (RenTech)'s firm, Renaissance Technologies LLC, owns 359,525 shares of Amprius Technologies, Inc. (AMPX), valued at approximately $6.06 M.
As of the Q1 2026 filing, Amprius Technologies, Inc. (AMPX) represents approximately 0.01% of Renaissance Technologies (RenTech)'s publicly disclosed stock portfolio, making it one of their key holdings.
Renaissance Technologies (RenTech)'s peak holding in Amprius Technologies, Inc. (AMPX) was 1,346,600 shares, as reported at the end of Q2 2025.