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American Superconductor Corporation (AMSC)

NasdaqGS - NasdaqGS Real-time price. Currency in USD
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15.80+0.56 (+3.67%)
At close: 04:00PM EDT
16.00 +0.20 (+1.27%)
After hours: 07:44PM EDT
Insider roster
Insider transactions

Major holders

Currency in USD
Breakdown
4.54%% of shares held by all insiders
64.85%% of shares held by institutions
67.93%% of float held by institutions
155Number of institutions holding shares

Top institutional holders

HolderSharesDate reported% outValue
AWM Investment Company, Inc.2,661,31930 Mar 20248.66%42,048,840
Baillie Gifford and Company2,526,55030 Mar 20248.22%39,919,490
Vanguard Group Inc1,698,93430 Mar 20245.53%26,843,157
Hood River Capital Management LLC1,618,80730 Mar 20245.27%25,577,150
Royce & Associates LP1,193,18230 Mar 20243.88%18,852,275
Driehaus Capital Management, LLC931,97930 Mar 20243.03%14,725,268
Invesco Ltd.864,22730 Mar 20242.81%13,654,786
Blackrock Inc.746,26630 Mar 20242.43%11,791,002
Oberweis Asset Management Inc.634,40030 Mar 20242.06%10,023,520
Essex Investment Management Co LLC583,92430 Mar 20241.90%9,225,999

Top mutual fund holders

HolderSharesDate reported% outValue
Roxbury/Hood River Small Cap Growth Fund988,37429 Apr 20243.22%15,616,309
Vanguard Total Stock Market Index Fund824,75630 Dec 20232.68%13,031,144
Meridian Contrarian Fund431,43230 Dec 20231.40%6,816,625
Vanguard Extended Market Index Fund431,48030 Dec 20231.40%6,817,384
Royce Opportunity Fund404,50730 Mar 20241.32%6,391,210
Oberweis Micro-Cap Portfolio375,80030 Dec 20231.22%5,937,640
Invesco ETF Tr-Invesco Wilderhill Clean Energy ETF371,96730 Mar 20241.21%5,877,078
Invesco ETF Tr II-Invesco DWA Small Cap Momentum ETF269,13730 Mar 20240.88%4,252,364
Old Westbury Small & Mid Cap Strategies Fund260,74130 Jan 20240.85%4,119,707
Royce Micro-Cap Fund235,62330 Mar 20240.77%3,722,843