American Superconductor shares owned by Rhumbline Advisers
Quarter-by-quarter ownership of American Superconductor (AMSC) shares owned by Rhumbline Advisers
from 13F filings
Historical chart of Rhumbline Advisers investment in American Superconductor
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Quarterly reported holdings in American Superconductor by Rhumbline Advisers
| Quarter filed | Position value | Share count | Share price at filing |
|---|---|---|---|
| 2025-09-30 | $4.2M | 70k | 59.39 |
| 2025-06-30 | $2.2M | 61k | 36.69 |
| 2025-03-31 | $892k | 49k | 18.14 |
| 2024-12-31 | $1.3M | 51k | 24.63 |
| 2024-09-30 | $1.2M | 51k | 23.60 |
| 2024-06-30 | $1.1M | 46k | 23.39 |
| 2024-03-31 | $19k | 1.4k | 13.51 |
| 2023-12-31 | $16k | 1.4k | 11.14 |
| 2023-09-30 | $11k | 1.4k | 7.55 |
| 2023-06-30 | $8.7k | 1.4k | 6.26 |
| 2022-03-31 | $272k | 36k | 7.61 |
| 2021-12-31 | $390k | 36k | 10.87 |
| 2021-09-30 | $533k | 37k | 14.59 |
| 2021-06-30 | $611k | 35k | 17.39 |
| 2021-03-31 | $714k | 38k | 18.97 |
| 2020-12-31 | $907k | 39k | 23.43 |
| 2020-09-30 | $415k | 29k | 14.47 |
| 2020-06-30 | $214k | 26k | 8.11 |
| 2020-03-31 | $124k | 23k | 5.46 |
| 2019-12-31 | $170k | 22k | 7.85 |
| 2019-09-30 | $167k | 21k | 7.83 |
| 2019-06-30 | $179k | 19k | 9.29 |
| 2017-03-31 | $88k | 13k | 6.83 |