# AMERICAN SUPERCONDUCTOR CORP SHS NEW

AMERICAN SUPERCONDUCTOR CORP SHS NEW is a security (CUSIP 030111207) tracked across SEC portfolio filings. 271 institutional managers reported $1.2B on Form 13F as of 2026-06-30; 24 registered fund positions totaling $139.3M via N-PORT as of 2026-05-31.

## Summary

- Issuer: AMERICAN SUPERCONDUCTOR CORP
- Class: SHS NEW
- CUSIP: 030111207
- Asset category: EC
- 13F holders: 271
- 13F value: $1.2B
- 13F period: 2026-06-30
- N-PORT fund positions: 24
- N-PORT value: $139.3M
- N-PORT report: 2026-05-31

## Top institutional holders (Form 13F)

_Showing 15 of 271 managers by value._

| Manager | Location | Value | Shares |
| --- | --- | --- | --- |
| BlackRock, Inc. | New York, NY | $134.8M | 3,982,650 |
| [VANGUARD GROUP INC](https://search.stillhousedata.com/firm/105958) | Valley Forge, PA | $101.5M | 3,526,632 |
| STATE STREET CORP | BOSTON, MA | $42.7M | 1,261,071 |
| [GEODE CAPITAL MANAGEMENT, LLC](https://search.stillhousedata.com/firm/115504) | BOSTON, MA | $39.6M | 1,169,152 |
| BAILLIE GIFFORD & CO | EDINBURGH, X0 | $38.7M | 933,308 |
| [BARROW HANLEY MEWHINNEY & STRAUSS LLC](https://search.stillhousedata.com/firm/105519) | DALLAS, TX | $38.6M | 1,139,793 |
| [EMERALD ADVISERS, LLC](https://search.stillhousedata.com/firm/107496) | LEOLA, PA | $35.0M | 843,956 |
| Nuveen, LLC | CHARLOTTE, NC | $34.6M | 1,020,947 |
| [OBERWEIS ASSET MANAGEMENT INC/](https://search.stillhousedata.com/firm/105471) | Lisle, IL | $28.8M | 849,900 |
| AWM Investment Company, Inc. | NEW YORK, NY | $27.1M | 801,604 |
| FIRST TRUST ADVISORS LP | Wheaton, IL | $26.3M | 778,268 |
| GOLDMAN SACHS GROUP INC | NEW YORK, NY | $24.0M | 709,504 |
| [EMERALD MUTUAL FUND ADVISERS TRUST](https://search.stillhousedata.com/firm/135130) | LEOLA, PA | $22.4M | 538,955 |
| DIMENSIONAL FUND ADVISORS LP | AUSTIN, TX | $22.3M | 658,297 |
| MORGAN STANLEY | NEW YORK, NY | $21.5M | 633,841 |

## Top fund holders (N-PORT)

_Showing 15 of 24 fund positions by value._

| Fund | Registrant | Value | % of fund |
| --- | --- | --- | --- |
| [Oberweis Micro-Cap Fund](https://search.stillhousedata.com/fund/S000010231) | OBERWEIS FUNDS | $26.6M | 253.08% |
| [VANGUARD EXPLORER FUND](https://search.stillhousedata.com/fund/S000002578) | VANGUARD EXPLORER FUND | $22.7M | 10.44% |
| [VANGUARD EXTENDED MARKET INDEX FUND](https://search.stillhousedata.com/fund/S000002841) | VANGUARD INDEX FUNDS | $18.0M | 2.21% |
| [VANGUARD STRATEGIC EQUITY FUND](https://search.stillhousedata.com/fund/S000002593) | VANGUARD HORIZON FUNDS | $15.9M | 15.74% |
| [Emerald Growth Fund](https://search.stillhousedata.com/fund/S000036390) | FINANCIAL INVESTORS TRUST | $13.8M | 97.74% |
| [VANGUARD RUSSELL 2000 INDEX FUND](https://search.stillhousedata.com/fund/S000030003) | VANGUARD SCOTTSDALE FUNDS | $12.1M | 6.88% |
| [Meridian Contrarian Fund](https://search.stillhousedata.com/fund/S000001463) | Meridian Fund Inc | $9.2M | 155.80% |
| [U.S. MICRO CAP PORTFOLIO](https://search.stillhousedata.com/fund/S000000948) | DFA INVESTMENT DIMENSIONS GROUP INC | $5.3M | 7.13% |
| [VANGUARD MARKET NEUTRAL FUND](https://search.stillhousedata.com/fund/S000019457) | VANGUARD MONTGOMERY FUNDS | $3.0M | 69.41% |
| ROYCE MICRO-CAP TRUST, INC. | ROYCE MICRO-CAP TRUST, INC. | $2.8M | 41.37% |
| [Master Small Cap Index Series](https://search.stillhousedata.com/fund/S000002716) | Quantitative Master Series LLC | $2.5M | 5.15% |
| [VANGUARD GROWTH AND INCOME FUND](https://search.stillhousedata.com/fund/S000002913) | VANGUARD QUANTITATIVE FUNDS | $2.1M | 1.29% |
| [1290 Essex Small Cap Growth Fund](https://search.stillhousedata.com/fund/S000076802) | 1290 Funds | $1.6M | 142.60% |
| [Fidelity Nasdaq Composite Index ETF](https://search.stillhousedata.com/fund/S000006011) | Fidelity Commonwealth Trust | $934K | 0.85% |
| [VANGUARD BALANCED INDEX FUND](https://search.stillhousedata.com/fund/S000002560) | VANGUARD VALLEY FORGE FUNDS | $854K | 0.15% |

## More

- [This page as markdown (for LLM agents)](https://search.stillhousedata.com/security/030111207.md)
- [Search all SEC filings, advisers and people on Adviser Search](https://search.stillhousedata.com/)

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Source: public SEC filing data via Adviser Search (https://search.stillhousedata.com).
Agents: this data is also queryable via MCP tools and read-only SQL — see https://search.stillhousedata.com/llms.txt.