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Of the 9 tracked institutions holding AMSC, 4 have a 3-year clone track record — 3 of them beat the S&P. Average holder's clone alpha: +2.4pt. It's a gauge of who owns the name, not just how many.
Among the 9 tracked institutional investors we monitor, AMSC (AMERICAN SUPERCONDUCTOR CORP) is held with a combined value of $351.99M across 10,926,721 shares. The largest holder is BlackRock, Inc. with a position worth $134.81M. 6 funds increased their holdings. 3 funds reduced their position.
Total Institutional Value
$351.99M
Total Shares Held
10,926,721
Institutional Holders
9
Ranked by estimated dollars moved (share change × implied price). 13F data lags up to 45 days.
| # | Fund | Value↓ | Portfolio % | Change |
|---|---|---|---|---|
| 1 | BlackRock, Inc. | $134.81M | 0.00% | +6.2% |
| 2 | VANGUARD GROUP INC | $101.50M | 0.00% | +19.6% |
| 3 | BAILLIE GIFFORD & CO | $49.00M | 0.05% | -3.9% |
| 4 | STATE STREET CORP | $42.69M | 0.00% | +5.8% |
| 5 | CITADEL ADVISORS LLC | $7.34M | 0.01% | -35.8% |
| 6 | AQR CAPITAL MANAGEMENT LLC | $6.25M | 0.00% | +26.6% |
| 7 | FMR LLC | $4.99M | 0.00% | +18.4% |
| 8 | MILLENNIUM MANAGEMENT LLC | $3.44M | 0.00% | +30.1% |
| 9 | PRICE T ROWE ASSOCIATES INC /MD/ | $1.99M | 0.00% | -78.7% |
As of the latest SEC 13F filings, BlackRock, Inc. is the largest institutional holder of AMSC with a position worth $134.81M, representing 0.00% of their portfolio. In total, 9 institutional investors hold AMSC with a combined value of $351.99M.
Institutional investors hold $351.99M worth of AMSC stock across 9 positions. The largest institutional holder is BlackRock, Inc. with $134.81M in holdings.
A 13F filing is a quarterly report required by the SEC from institutional investment managers with over $100 million in assets. It discloses their holdings in U.S. equities. For AMSC, these filings reveal which major funds are accumulating or reducing positions, providing insights into institutional sentiment.
Get notified when hedge funds change their AMSC positions.
Alpha = the manager's 3-year clone return minus the S&P 500. A skilled roster is a stronger tell than a crowded one — though even skilled managers' edge doesn't reliably survive the 13F disclosure lag. Why →
Last Close
$30.52
2026-07-24
YTD
-3.4%
11% of 52-week range