| 3.04 Data as of May 21 |  +0.31 / +11.36%Today’s Change | 2.30 Today|||52-Week Range 4.96 | +16.03% Year-to-Date |
| Individual stakeholders | 27.58% |
| Other institutional | 15.00% |
| Mutual fund holders | 11.29% |
| 3/31/2013 | BLACKROCK FUND ADVISORS Bought 226.1 Thousand shares of American Superconductor C... |
| 3/31/2013 | SCOPIA MANAGEMENT, INC. Bought 219.4 Thousand shares of American Superconductor C... |
| 3/31/2013 | IRONWOOD INVESTMENT MANAGEMENT L... Bought 190.7 Thousand shares of American Superconductor C... |
| Stockholder | Stake | Shares owned | Total value ($) | Shares bought / sold | Total change |
|---|---|---|---|---|---|
| BlackRock Fund Advisors | 4.43% | 2,549,740 | 6,399,847 | +226,141 | +9.73% |
| The Vanguard Group, Inc. | 3.19% | 1,835,511 | 4,607,133 | -660,905 | -26.47% |
| Heights Capital Management, Inc. | 2.35% | 1,350,941 | 3,390,862 | -266,443 | -16.47% |
| Ironwood Investment Management LL... | 1.52% | 875,380 | 2,197,204 | +190,673 | +27.85% |
| SSgA Funds Management, Inc. | 1.34% | 772,864 | 1,939,889 | -30,115 | -3.75% |
| Northern Trust Investments, Inc. | 1.15% | 662,488 | 1,662,845 | -16,655 | -2.45% |
| Invesco PowerShares Capital Manag... | 1.12% | 642,088 | 1,611,641 | -158,098 | -19.76% |
| Jacobs Levy Equity Management, In... | 0.83% | 479,803 | 1,204,306 | +20,500 | +4.46% |
| Dimensional Fund Advisors, Inc. | 0.81% | 462,997 | 1,162,122 | -600 | -0.13% |
| The California Public Employees R... | 0.66% | 377,290 | 946,998 | +51,000 | +15.63% |
| Mutual fund | Stake | Shares owned | Total value ($) | Shares bought / sold | Total change |
|---|---|---|---|---|---|
| Vanguard Small Cap Index Fund | 1.21% | 695,564 | 1,745,866 | +22,575 | +3.35% |
| iShares Russell 2000 Index Fund | 1.07% | 613,394 | 1,539,619 | -7,480 | -1.20% |
| Vanguard Total Stock Market Index... | 1.05% | 602,395 | 1,512,011 | 0 | 0.00% |
| Vanguard Extended Market Index Fu... | 0.76% | 438,882 | 1,101,594 | +9,360 | +2.18% |
| PowerShares Lux Nanotech Portfoli... | 0.49% | 280,275 | 703,490 | +9,616 | +3.55% |
| iShares Russell 2000 Value Index ... | 0.47% | 270,189 | 678,174 | +10,584 | +4.08% |
| BlackRock Global Small Cap Fund | 0.46% | 265,800 | 667,158 | -6,900 | -2.53% |
| Vanguard Small Cap Growth Index F... | 0.42% | 243,382 | 610,889 | -233,153 | -48.93% |
| PowerShares Wilderhill Clean Ener... | 0.42% | 238,933 | 599,722 | +238,933 | -- |
| Vanguard Small Cap Value Index Fu... | 0.34% | 196,692 | 493,697 | +196,692 | -- |
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