American Superconductor Corporation
MX ˙ BMV ˙ US0301112076
SecurityMX:AMSC / American Superconductor Corporation
InstitutionGeode Capital Management, Llc
Latest Disclosed Ownership1,169,152 shares
Latest Disclosed Value $ 39,583,990
Geode Capital Management, Llc reports 7.19% increase in ownership of AMSC / American Superconductor Corporation

On May 15, 2026 - Geode Capital Management, Llc filed a 13F-HR form disclosing ownership of 1,169,152 shares of American Superconductor Corporation (MX:AMSC) valued at $39,583,990 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 9, 2026 disclosing 1,090,710 shares of American Superconductor Corporation. This represents a change in shares of 7.19% during the quarter.

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)
2026-05-15 2026-03-31 13F AMERICAN SUPERCONDUCTOR SHS NEW 030111207 1,169,152 78,442 7.19 39,584 26.08 0.0013
2026-02-09 2025-12-31 13F AMERICAN SUPERCONDUCTOR SHS NEW 030111207 1,090,710 20,855 1.95 31,396 -50.59 0.0019
2025-11-12 2025-09-30 13F AMERICAN SUPERCONDUCTOR SHS NEW 030111207 1,069,855 129,744 13.80 63,548 84.22 0.0041
2025-08-08 2025-06-30 13F AMERICAN SUPERCONDUCTOR SHS NEW 030111207 940,111 58,430 6.63 34,497 115.64 0.0024
2025-05-13 2025-03-31 13F AMERICAN SUPERCONDUCTOR SHS NEW 030111207 881,681 25,226 2.95 15,998 -24.18 0.0013
2025-02-12 2024-12-31 13F AMERICAN SUPERCONDUCTOR SHS NEW 030111207 856,455 9,043 1.07 21,099 5.48 0.0016
2024-11-12 2024-09-30 13F AMERICAN SUPERCONDUCTOR SHS NEW 030111207 847,412 36,511 4.50 20,003 5.44 0.0016
2024-08-09 2024-06-30 13F AMERICAN SUPERCONDUCTOR SHS NEW 030111207 810,901 426,160 110.77 18,971 264.88 0.0017
2024-05-13 2024-03-31 13F AMERICAN SUPERCONDUCTOR SHS NEW 030111207 384,741 89,780 30.44 5,200 58.22 0.0005
2024-02-13 2023-12-31 13F AMERICAN SUPERCONDUCTOR SHS NEW 030111207 294,961 5,598 1.93 3,287 50.39 0.0003
2023-11-13 2023-09-30 13F AMERICAN SUPERCONDUCTOR SHS NEW 030111207 289,363 528 0.18 2,185 20.85 0.0003
2023-08-11 2023-06-30 13F AMERICAN SUPERCONDUCTOR SHS NEW 030111207 288,835 84 0.03 1,808 27.59 0.0002
2023-05-15 2023-03-31 13F AMERICAN SUPERCONDUCTOR SHS NEW 030111207 288,751 10,524 3.78 1,418 141,600.00 0.0002
2023-02-13 2022-12-31 13F AMERICAN SUPERCONDUCTOR SHS NEW 030111207 278,227 10,529 3.93 1 -99.91 0.0001
2022-11-14 2022-09-30 13F AMERICAN SUPERCONDUCTOR SHS NEW 030111207 267,698 9,299 3.60 1,172 -12.41 0.0002
2022-08-12 2022-06-30 13F AMERICAN SUPERCONDUCTOR SHS NEW 030111207 258,399 -236,325 -47.77 1,338 -64.45 0.0002
2022-05-13 2022-03-31 13F AMERICAN SUPERCONDUCTOR SHS NEW 030111207 494,724 29,079 6.24 3,764 -25.70 0.0005
2022-02-11 2021-12-31 13F AMERICAN SUPERCONDUCTOR SHS NEW 030111207 465,645 -38,791 -7.69 5,066 -31.11 0.0006
2021-11-12 2021-09-30 13F AMERICAN SUPERCONDUCTOR SHS NEW 030111207 504,436 65,260 14.86 7,354 -3.71 0.0010
2021-08-13 2021-06-30 13F AMERICAN SUPERCONDUCTOR SHS NEW 030111207 439,176 14,593 3.44 7,637 -5.13 0.0011
2021-05-12 2021-03-31 13F AMERICAN SUPERCONDUCTOR SHS NEW 030111207 424,583 11,899 2.88 8,050 -16.70 0.0012
2021-02-12 2020-12-31 13F AMERICAN SUPERCONDUCTOR SHS NEW 030111207 412,684 108,904 35.85 9,664 119.74 0.0016
2020-11-13 2020-09-30 13F AMERICAN SUPERCONDUCTOR SHS NEW 030111207 303,780 14,061 4.85 4,398 86.75 0.0009
2020-08-13 2020-06-30 13F AMERICAN SUPERCONDUCTOR SHS NEW 030111207 289,719 2,384 0.83 2,355 49.62 0.0005
2020-05-14 2020-03-31 13F AMERICAN SUPERCONDUCTOR SHS NEW 030111207 287,335 26,616 10.21 1,574 -23.07 0.0004
2020-02-20 2019-12-31 13F/A-1 AMERICAN SUPERCONDUCTOR SHS NEW 030111207 260,719 6,967 2.75 2,046 2.87 0.0004
2020-02-13 2019-12-31 13F AMERICAN SUPERCONDUCTOR SHS NEW 030111207 260,719 6,967 2,046 260.7448
2019-11-12 2019-09-30 13F AMERICAN SUPERCONDUCTOR SHS NEW 030111207 253,752 4,314 1.73 1,989 -14.04 0.0005
2019-08-14 2019-06-30 13F AMERICAN SUPERCONDUCTOR SHS NEW 030111207 249,438 69,066 38.29 2,314 -0.17 0.0006
2019-05-14 2019-03-31 13F AMERICAN SUPERCONDUCTOR SHS NEW 030111207 180,372 56,151 45.20 2,318 67.36 0.0006
2019-03-06 2018-12-31 13F/A-1 AMERICAN SUPERCONDUCTOR SHS NEW 030111207 124,221 0 0.00 1,385 60.49 0.0004
2019-02-13 2018-12-31 13F AMERICAN SUPERCONDUCTOR SHS NEW 030111207 124,221 0 1,385
2018-11-13 2018-09-30 13F AMERICAN SUPERCONDUCTOR SHS NEW 030111207 124,221 15,453 14.21 863 13.40 0.0002
2018-08-14 2018-06-30 13F AMERICAN SUPERCONDUCTOR SHS NEW 030111207 108,768 14,450 15.32 761 38.87 0.0002
2018-05-15 2018-03-31 13F AMERICAN SUPERCONDUCTOR SHS NEW 030111207 94,318 0 0.00 548 60.23 0.0002
2018-02-13 2017-12-31 13F AMERICAN SUPERCONDUCTOR SHS NEW 030111207 94,318 0 0.00 342 -20.09 0.0001
2017-11-14 2017-09-30 13F AMERICAN SUPERCONDUCTOR SHS NEW 030111207 94,318 0 0.00 428 -1.61 0.0002
2017-08-14 2017-06-30 13F AMERICAN SUPERCONDUCTOR SHS NEW 030111207 94,318 -4,487 -4.54 435 -35.75 0.0002
2017-06-21 2017-03-31 13F/A-1 AMERICAN SUPERCONDUCTOR COR COM SHS NEW 030111207 98,805 3,988 4.21 677 -3.01 0.0003
2017-05-12 2017-03-31 13F AMERICAN SUPERCONDUCTOR COR COM SHS NEW 030111207 98,805 677
2017-02-14 2016-12-31 13F AMERICAN SUPERCONDUCTOR COR COM SHS NEW 030111207 94,817 2,151 2.32 698 7.55 0.0003
2016-11-10 2016-09-30 13F AMERICAN SUPERCONDUCTOR COR COM SHS NEW 030111207 92,666 15 0.02 649 -16.90 0.0003
2016-08-12 2016-06-30 13F AMERICAN SUPERCONDUCTOR COR COM SHS NEW 030111207 92,651 22,482 32.04 781 46.53 0.0004
2016-05-13 2016-03-31 13F AMERICAN SUPERCONDUCTOR COR COM SHS NEW 030111207 70,169 -47 -0.07 533 19.24 0.0003
2016-02-12 2015-12-31 13F AMERICAN SUPERCONDUCTOR COR COM SHS NEW 030111207 70,216 94 0.13 447 47.52 0.0003
2015-11-13 2015-09-30 13F AMERICAN SUPERCONDUCTOR COR COM SHS NEW 030111207 70,122 5,077 7.81 303 -10.88 0.0002
2015-08-14 2015-06-30 13F AMERICAN SUPERCONDUCTOR COR COM SHS NEW 030111207 65,045 65,045 340 0.0002
2015-05-14 2015-03-31 13F AMERICAN SUPERCONDUCTOR COR COM COM 030111108 0 -343,585 -100.00 0 -100.00
2015-02-12 2014-12-31 13F AMERICAN SUPERCONDUCTOR COR COM COM 030111108 343,585 390 0.11 254 -47.41 0.0002
2014-11-14 2014-09-30 13F AMERICAN SUPERCONDUCTOR COR COM COM 030111108 343,195 21,397 6.65 483 -7.82 0.0003
2014-08-13 2014-06-30 13F AMERICAN SUPERCONDUCTOR COR COM COM 030111108 321,798 -27,594 -7.90 524 -6.76 0.0003
2014-05-14 2014-03-31 13F AMERICAN SUPERCONDUCTOR COR COM COM 030111108 349,392 10,357 3.05 562 1.08 0.0004
2014-02-14 2013-12-31 13F AMERICAN SUPERCONDUCTOR COR COM COM 030111108 339,035 56,878 20.16 556 -15.76 0.0004
2013-11-14 2013-09-30 13F AMERICAN SUPERCONDUCTOR COR COM COM 030111108 282,157 27,662 10.87 660 -1.79 0.0005
2013-08-14 2013-06-30 13F AMERICAN SUPERCONDUCTOR COR COM COM 030111108 254,495 254,495 672 0.0006
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.