American Superconductor Corporation
US ˙ NasdaqGS ˙ US0301112076

SecurityAMSC / American Superconductor Corporation
InstitutionAlps Advisors Inc
Latest Disclosed Ownership86,561 shares
Latest Disclosed Value $ 2,930,090
Alps Advisors Inc reports 39.07% increase in ownership of AMSC / American Superconductor Corporation

On May 8, 2026 - Alps Advisors Inc filed a 13F-HR form disclosing ownership of 86,561 shares of American Superconductor Corporation (US:AMSC) valued at $2,930,090 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 12, 2026 disclosing 62,242 shares of American Superconductor Corporation. This represents a change in shares of 39.07% during the quarter. The current value of the position is $4,039,802 USD.

Institutional Ownership: 13F and NPORT Filings

The Security and Class in the table below are shown exactly as filed by the investor. We do our best to track continuity of investments through acquisitions, and this will be reflected in the table as changes in names. In addition to descriptive data, performance of the investment is shown over time. To calculate quarterly performance, we first calculate cost basis of the shares purchased during the quarter, then use that to calculate gross profit. Quarterly return is Gross Profit / Starting Portfolio value.

Note that cost basis is calculated and stored in thousands, so small quarterly changes in shares frequently result in a cost basis of zero.

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Disclosed Equity Positions (from 13F/NPORT Filings)
File
Date
Effective
Date
Form Security Class ID Avg Price
Paid (Est)
Reported
Shares
ΔShares ΔShares
(%)
Reported
Value
(x1000)
ΔValue
(%)
Alloc
(%)
ΔAlloc ΔAlloc (%) Cost Basis
(x1000)
Unrealized
Gain/Loss
(x1000)
2026-05-08 2026-03-31 13F AMERICAN SUPERCONDUCTOR SHS NEW 030111207 86,561 24,319 39.07 2,930 63.60 0.0127
2026-02-12 2025-12-31 13F AMERICAN SUPERCONDUCTOR SHS NEW 030111207 62,242 -4,083 -6.16 1,791 -54.53 0.0104
2025-11-05 2025-09-30 13F AMERICAN SUPERCONDUCTOR SHS NEW 030111207 66,325 1,682 2.60 3,939 66.13 0.0219
2025-08-11 2025-06-30 13F AMERICAN SUPERCONDUCTOR SHS NEW 030111207 64,643 5,179 8.71 2,372 119.94 0.0137
2025-04-30 2025-03-31 13F AMERICAN SUPERCONDUCTOR SHS NEW 030111207 59,464 1,160 1.99 1,079 -24.93 0.0063
2025-02-13 2024-12-31 13F AMERICAN SUPERCONDUCTOR SHS NEW 030111207 58,304 -20,275 -25.80 1,436 -22.55 0.0091
2024-11-12 2024-09-30 13F AMERICAN SUPERCONDUCTOR SHS NEW 030111207 78,579 -3,206 -3.92 1,854 -3.03 0.0124
2024-08-13 2024-06-30 13F AMERICAN SUPERCONDUCTOR SHS NEW 030111207 81,785 -6,305 -7.16 1,913 60.67 0.0131
2024-05-14 2024-03-31 13F AMERICAN SUPERCONDUCTOR SHS NEW 030111207 88,090 88,090 1,190 0.0084
2022-08-15 2022-06-30 13F/A-1 AMERICAN SUPERCONDUCTOR SHS NEW 030111207 0 -174,911 -100.00 0 -100.00
2022-08-10 2022-06-30 13F AMERICAN SUPERCONDUCTOR SHS NEW 030111207 0 -174,911 0
2022-05-16 2022-03-31 13F AMERICAN SUPERCONDUCTOR SHS NEW 030111207 174,911 -57,322 -24.68 1,331 -47.33 0.0144
2022-02-09 2021-12-31 13F AMERICAN SUPERCONDUCTOR SHS NEW 030111207 232,233 -6,848 -2.86 2,527 -27.51 0.0284
2021-11-15 2021-09-30 13F AMERICAN SUPERCONDUCTOR SHS NEW 030111207 239,081 31,921 15.41 3,486 -3.25 0.0336
2021-08-11 2021-06-30 13F AMERICAN SUPERCONDUCTOR SHS NEW 030111207 207,160 -36,600 -15.01 3,603 -22.05 0.0319
2021-05-07 2021-03-31 13F AMERICAN SUPERCONDUCTOR SHS NEW 030111207 243,760 62,777 34.69 4,622 9.04 0.0451
2021-02-03 2020-12-31 13F AMERICAN SUPERCONDUCTOR SHS NEW 030111207 180,983 79,301 77.99 4,239 187.98 0.0477
2020-11-05 2020-09-30 13F/A-1 AMERICAN SUPERCONDUCTOR SHS NEW 030111207 101,682 27,231 36.58 1,472 143.31 0.0217
2020-11-04 2020-09-30 13F AMERICAN SUPERCONDUCTOR SHS NEW 030111207 101,682 27,231 1,472 18,865.4435
2020-08-05 2020-06-30 13F AMERICAN SUPERCONDUCTOR SHS NEW 030111207 74,451 9,804 15.17 605 70.90 0.0081
2020-05-06 2020-03-31 13F AMERICAN SUPERCONDUCTOR SHS NEW 030111207 64,647 17,456 36.99 354 -4.32 0.0055
2020-02-07 2019-12-31 13F AMERICAN SUPERCONDUCTOR SHS NEW 030111207 47,191 9,344 24.69 370 24.58 0.0029
2019-11-04 2019-09-30 13F AMER SUPERCONDTR COMMON STOCK 030111207 37,847 7,784 25.89 297 6.45 0.0023
2019-08-07 2019-06-30 13F AMER SUPERCONDTR COMMON STOCK 030111207 30,063 16,762 126.02 279 63.16 0.0021
2019-05-01 2019-03-31 13F AMER SUPERCONDTR COMMON STOCK 030111207 13,301 13,301 171 0.0012
Legend
Shares
The total number of shares held by the institution at the end of the reporting period (the effective date). This is provided in the filing.
Value
The total value of the shares as of the effective date. This is provided in the filing.
Avg. Share Price
The weighted average share price of the shares held by the institution. We use FIFO accounting to determine this price
Class
This is the security class as indicated by the filer. There are a variety of values for this field. Common values include "EC" = equity common, "EP" - equity preferred
Allocation (%)
The percent of the institution's portfolio that this position represents. This is provided in NPORT filings. For 13F filings, we calculate it.
Change in Allocation
The change in allocation from the prior reporting period. This is calculated as current allocation - prior allocation.
Change in Allocation (%)
The percent change in allocation from the prior reporting period. This is calculated as (current allocation - prior allocation) / prior allocation.
Cost Basis
The total cost of the shares held. This is calculated as reported shares * avg. share price
Unrealized Gain/Loss
This is the market value of the position as of the effective date minus the cost basis.