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Disclosery

AMSC AMERICAN SUPERCONDUCTOR CORP

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SHS NEW (common), issuer CIK 880807

268 managers (277 13F filers) reported a position in AMSC shares at 2026-06-30, 35,358,688 shares in all. 62 filers opened a position and 30 filers sold out during the quarter.

Managers
268
13F filers
277
New
62
Added
107
Reduced
77
Sold out
30
Shares held by filers
35,358,688

Shares held by filers adds up every 13F filer's report, so a share reported by a parent and by its subsidiary counts twice (H9). Managers counts each filer group once.

13D and 13G filers

No 13D or 13G on this security in the data. Structured 13D/G data starts 2024-12-18.

Insider trades

No Form 4 transaction on this security in the data.

13F holders, Q2 2026

Filers in the available 13F reports with a share position at 2026-06-30, filer groups collapsed to one row (method), largest first. Options and principal amounts are left out. A group row states no % of portfolio, since each member reports its own portfolio: the members' percents are listed under it. A value about 1,000 times or 1/1,000 of the price other filers imply is shown as filed but neither ranks the row nor enters a sum.

HolderSharesValue% of portfolioChangeSource
Rockefeller Capital Management L.P.in group Rockefeller Capital Managemen…1,556$64.6K<0.01%-1713F-HRTimelineGroup
GAMMA Investing LLC1,177$48.9K<0.01%+4913F-HRTimeline
Nykredit A/Sin group Nykredit A/S1,111$46.1K<0.01%13F-HR/ATimelineGroup
Allworth Financial LP1,025$42.5K<0.01%-1913F-HRTimeline
Dakota Community Bank & Trust NA994$41.3K0.13%new13F-HRTimeline
Hughes Financial Services, LLC900$37.4K<0.01%new13F-HRTimeline
Steward Partners Investment Advisory, L…810$33.6K<0.01%new13F-HRTimeline
SUMMIT SECURITIES GROUP LLC794$33K0.01%new13F-HRTimeline
BNP PARIBAS ASSET MANAGEMENT Holding S.…in group BNP PARIBAS ASSET MANAGEMENT …753$31.3K<0.01%-13413F-HRTimelineGroup
Versant Capital Management, Inc665$27.6K<0.01%013F-HRTimeline
BLUE BELL PRIVATE WEALTH MANAGEMENT, LLC613$25.4K<0.01%new13F-HRTimeline
NewEdge Advisors, LLC612$25.4K<0.01%-2113F-HRTimeline
NISA INVESTMENT ADVISORS, LLC553$23K<0.01%+813F-HRTimeline
SWAN Capital LLC550$22.8K0.01%+5013F-HRTimeline
SIGNATUREFD, LLC488$20.3K<0.01%+32513F-HRTimeline
Wealth Enhancement Trust Services, Inc.406$16.9K<0.01%+713F-HR/ATimeline
Clearstead Trust, LLC393$16.3K<0.01%013F-HRTimeline
Essential Partners LLC387$16.1K0.01%-77813F-HRTimeline
PNC Financial Services Group, Inc.in group PNC Financial Services Group,…386$16K<0.01%+4513F-HRTimelineGroup
Caitong International Asset Management …332$13.8K<0.01%new13F-HRTimeline
Kemnay Advisory Services Inc.329$13.7K<0.01%-1,53813F-HRTimeline
HARBOUR INVESTMENTS, INC.301$12.5K<0.01%+10013F-HRTimeline
Lavaca Capital LLC280$11.6K<0.01%new13F-HRTimeline
SHP Wealth Management271$11.2K<0.01%013F-HRTimeline
CoreCap Advisors, LLC220$9.13K<0.01%013F-HRTimeline
STANCE CAPITAL LLC220$9.13K<0.01%013F-HRTimeline
EverSource Wealth Advisors, LLCin group EverSource Wealth Advisors, L…192$7.97K<0.01%+4313F-HRTimelineGroup
Bullock Wealth Management Group190$7.58K<0.01%013F-HRTimeline
LOS ANGELES CAPITAL MANAGEMENT LLC181$7.51K<0.01%-43,33113F-HRTimeline
Owl Creek Wealth Partners LLC175$7.26K<0.01%013F-HRTimeline
Sterling Capital Management LLC165$6.85K<0.01%-13413F-HRTimeline
NATIONAL BANK OF CANADA /FI/in group NATIONAL BANK OF CANADA /FI/163$6.77K<0.01%-13113F-HRTimelineGroup
Spire Wealth Managementin group Spire Wealth Management157$6.52K<0.01%-10313F-HRTimelineGroup
BARRETT & COMPANY, INC.150$6.23K<0.01%new13F-HRTimeline
Quantbot Technologies LP139$5.77K<0.01%new13F-HRTimeline
Fortitude Family Office, LLC136$5.64K<0.01%+11813F-HRTimeline
Parallel Advisors, LLC135$5.6K<0.01%013F-HRTimeline
HANTZ FINANCIAL SERVICES, INC.130$5K<0.01%new13F-HRTimelineThe filing omitted confidential holdings, a later amendment may add them.
NORTHWESTERN MUTUAL WEALTH MANAGEMENT COin group NORTHWESTERN MUTUAL INVESTMEN…119$4.94K<0.01%+913F-HRTimelineGroup
Smartleaf Asset Management LLC122$4.86K<0.01%013F-HRTimeline
IFP Advisors, Inc108$4.48K<0.01%+7213F-HRTimeline
TD Waterhouse Canada Inc.110$4.4K<0.01%+1013F-HRTimeline
ROTHSCHILD INVESTMENT LLC104$4.32K<0.01%+1413F-HRTimeline
TRUST CO OF VERMONT100$4.15K<0.01%13F-HRTimeline
PRIVATE TRUST CO NA100$4.15K<0.01%013F-HRTimeline
IMA Advisory Services, Inc.100$4.15K<0.01%new13F-HRTimeline
Archer Investment Corp100$4.15K<0.01%013F-HR/ATimeline
OAKWORTH CAPITAL, INC.100$3.99K<0.01%new13F-HRTimeline
Quarry LP95$3.94K<0.01%new13F-HRTimeline
Farther Finance Advisors, LLC88$3.64K<0.01%+5413F-HRTimeline
JNBA Financial Advisors66$2.74K<0.01%new13F-HRTimeline
Kilter Group LLC63$2.62K<0.01%013F-HRTimeline
US BANCORP \DE\in group US BANCORP \DE\61$2.53K<0.01%-8,76013F-HRTimelineGroup
HAGER INVESTMENT MANAGEMENT SERVICES, L…50$2.08K<0.01%013F-HRTimeline
Aventura Private Wealth, LLC50$2.08K<0.01%new13F-HRTimeline
WHITTIER TRUST CO OF NEVADA INC40$1.42K<0.01%013F-HRTimeline
Basecamp Wealth Advisors LLC27$1.12K<0.01%+1413F-HRTimeline
True Wealth Design, LLC25$1.04K<0.01%-313F-HRTimeline
Larson Financial Group LLC22$913<0.01%+1313F-HRTimeline
MassMutual Private Wealth & Trust, FSB21$872<0.01%+1613F-HRTimeline
Keating Financial Advisory Services, In…19$789<0.01%+113F-HRTimeline
Stone House Investment Management, LLC14$581<0.01%new13F-HRTimeline
Rialto Wealth Management, LLC13$540<0.01%new13F-HRTimeline
JFS WEALTH ADVISORS, LLC10$416<0.01%013F-HRTimeline
SJS Investment Consulting Inc.3$125<0.01%+113F-HRTimeline
JPL Wealth Management, LLC2$84<0.01%new13F-HRTimeline
RHL GROUP, LLC1$42<0.01%new13F-HRTimeline
WPG Advisers, LLC1$42<0.01%-9213F-HRTimeline