Renaissance Technologies (RenTech)'s AMSC Position Overview
Renaissance Technologies (RenTech) (via Renaissance Technologies LLC (Rentech)) currently holds 139,989 shares of American Superconductor Corporation (AMSC) worth $4.03 M, representing 0.01% of the portfolio. First purchased in 2015-Q1, this long-term strategic position has been held for 41 quarters.
Based on 13F filings since 2013, Renaissance Technologies (RenTech) has maintained a long-term strategic position in AMSC, representing a significant commitment to this investment thesis. Largest addition occurred in Q1 2019, adding 628,689 shares. Largest reduction occurred in Q3 2021, reducing 300,746 shares.
Analysis based on 13F filings available since 2013 Q2
Renaissance Technologies (RenTech)'s American Superconductor Corporation (AMSC) Holding Value Over Time
Track share changes against reported price movement
Quarterly American Superconductor Corporation (AMSC) Trades by Renaissance Technologies (RenTech)
| Report Date | Bought/Sold (Sh.) | % Change | Qtr. End Shares | Reported Price |
|---|---|---|---|---|
| Q4 2025 | -184,000 | Reduce 56.79% | 139,989 | $28.78 |
| Q3 2025 | +323,989 | New Buy | 323,989 | $59.39 |
| Q4 2024 | -158,389 | Sold Out | 0 | $0.00 |
| Q3 2024 | -29,600 | Reduce 15.75% | 158,389 | $23.60 |
| Q2 2024 | +74,500 | Add 65.65% | 187,989 | $23.39 |
| Q1 2024 | +113,489 | New Buy | 113,489 | $13.51 |
| Q3 2023 | -69,489 | Sold Out | 0 | $0.00 |
| Q2 2023 | +12,889 | Add 22.77% | 69,489 | $0.01 |
| Q1 2023 | -45,589 | Reduce 44.61% | 56,600 | $0.00 |
| Q4 2022 | -34,700 | Reduce 25.35% | 102,189 | $0.00 |
| Q3 2022 | +95,200 | Add 228.36% | 136,889 | $4.38 |
| Q2 2022 | -38,200 | Reduce 47.82% | 41,689 | $5.18 |
| Q1 2022 | +79,889 | New Buy | 79,889 | $7.61 |
| Q4 2021 | -43,808 | Sold Out | 0 | $0.00 |
| Q3 2021 | -300,746 | Reduce 87.29% | 43,808 | $14.59 |
| Q2 2021 | -271,921 | Reduce 44.11% | 344,554 | $17.39 |
| Q1 2021 | -300,500 | Reduce 32.77% | 616,475 | $18.96 |
| Q4 2020 | -252,442 | Reduce 21.59% | 916,975 | $23.42 |
| Q3 2020 | -112,900 | Reduce 8.80% | 1.17 M | $14.48 |
| Q2 2020 | +121,900 | Add 10.50% | 1.28 M | $8.13 |
| Q1 2020 | -74,200 | Reduce 6.01% | 1.16 M | $5.48 |
| Q4 2019 | -14,541 | Reduce 1.16% | 1.23 M | $7.85 |
| Q3 2019 | +91,225 | Add 7.88% | 1.25 M | $7.84 |
| Q2 2019 | +415,286 | Add 55.92% | 1.16 M | $9.28 |
| Q1 2019 | +628,689 | Add 551.68% | 742,647 | $12.86 |
| Q4 2018 | +42,200 | Add 58.81% | 113,958 | $11.15 |
| Q3 2018 | -113,130 | Reduce 61.19% | 71,758 | $6.95 |
| Q2 2018 | -128,800 | Reduce 41.06% | 184,888 | $7.00 |
| Q1 2018 | -194,900 | Reduce 38.32% | 313,688 | $5.82 |
| Q4 2017 | -45,700 | Reduce 8.24% | 508,588 | $3.63 |
| Q3 2017 | +68,100 | Add 14.01% | 554,288 | $4.54 |
| Q2 2017 | +26,600 | Add 5.79% | 486,188 | $4.62 |
| Q1 2017 | +33,700 | Add 7.91% | 459,588 | $6.86 |
| Q4 2016 | +7,800 | Add 1.87% | 425,888 | $7.37 |
| Q3 2016 | +49,800 | Add 13.52% | 418,088 | $7.01 |
| Q2 2016 | +49,000 | Add 15.35% | 368,288 | $8.44 |
| Q1 2016 | +30,600 | Add 10.60% | 319,288 | $7.60 |
| Q4 2015 | +26,000 | Add 9.90% | 288,688 | $6.37 |
| Q3 2015 | +81,200 | Add 44.74% | 262,688 | $4.33 |
| Q2 2015 | +107,200 | Add 144.30% | 181,488 | $5.23 |
| Q1 2015 | +74,288 | New Buy | 74,288 | $6.43 |
Renaissance Technologies (RenTech)'s American Superconductor Corporation Investment FAQs
Renaissance Technologies (RenTech) first purchased American Superconductor Corporation (AMSC) in Q1 2015, acquiring 74,288 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 American Superconductor Corporation (AMSC) for 41 quarters since Q1 2015.
Renaissance Technologies (RenTech)'s largest addition to American Superconductor Corporation (AMSC) was in Q1 2019, adding 742,647 shares worth $9.55 M.
According to the latest 13F filing for Q4 2025, Renaissance Technologies (RenTech)'s firm, Renaissance Technologies LLC (Rentech), owns 139,989 shares of American Superconductor Corporation (AMSC), valued at approximately $4.03 M.
As of the Q4 2025 filing, American Superconductor Corporation (AMSC) 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 American Superconductor Corporation (AMSC) was 1,282,317 shares, as reported at the end of Q2 2020.