| 31.89 Data as of May 17 |  +0.89 / +2.87%Today’s Change | 17.55 Today|||52-Week Range 31.94 | +52.80% Year-to-Date |
| Mutual fund holders | 32.27% |
| Individual stakeholders | 30.63% |
| Other institutional | 25.96% |
| 3/31/2013 | CONESTOGA CAPITAL ADVISORS LLC Bought 448.3 Thousand shares of AAON Inc |
| 3/31/2013 | NEUBERGER BERMAN LLC Bought 252.5 Thousand shares of AAON Inc |
| 3/31/2013 | CORTINA ASSET MANAGEMENT LLC Bought 176.5 Thousand shares of AAON Inc |
| Stockholder | Stake | Shares owned | Total value ($) | Shares bought / sold | Total change |
|---|---|---|---|---|---|
| Royce & Associates LLC | 6.50% | 1,592,934 | 45,255,255 | -344,006 | -17.76% |
| BlackRock Fund Advisors | 6.09% | 1,493,212 | 42,422,153 | +95,376 | +6.82% |
| The Vanguard Group, Inc. | 4.69% | 1,149,300 | 32,651,613 | -15,213 | -1.31% |
| Neuberger Berman LLC | 3.86% | 945,392 | 26,858,587 | +252,477 | +36.44% |
| Capital Advisors, Inc. (Oklahoma) | 3.75% | 918,995 | 26,108,648 | +756 | +0.08% |
| Atlanta Capital Management Co. LL... | 2.76% | 675,410 | 19,188,398 | -6,931 | -1.02% |
| Dimensional Fund Advisors, Inc. | 2.61% | 639,804 | 18,176,832 | +6,840 | +1.08% |
| Thomson, Horstmann & Bryant, Inc. | 2.25% | 551,768 | 15,675,729 | -350,127 | -38.82% |
| The Killen Group, Inc. | 2.24% | 548,075 | 15,570,811 | +18,844 | +3.56% |
| Conestoga Capital Advisors LLC | 1.83% | 448,250 | 12,734,783 | +448,250 | -- |
| Mutual fund | Stake | Shares owned | Total value ($) | Shares bought / sold | Total change |
|---|---|---|---|---|---|
| Royce Pennsylvania Mutual Fund | 4.70% | 1,150,650 | 32,689,967 | 0 | 0.00% |
| Neuberger Berman Genesis Fund | 1.66% | 405,814 | 11,529,176 | +260,477 | +179.22% |
| Royce Micro Cap Fund | 1.39% | 340,927 | 9,685,736 | -30,000 | -8.09% |
| iShares Core S&P Small Cap ETF | 1.33% | 326,635 | 9,279,700 | +7,150 | +2.24% |
| Vanguard Small Cap Index Fund | 1.25% | 305,567 | 8,681,158 | +7,768 | +2.61% |
| Berwyn Fund | 1.24% | 304,318 | 8,645,674 | +10,000 | +3.40% |
| iShares Russell 2000 Index Fund | 1.19% | 292,163 | 8,300,351 | -7,274 | -2.43% |
| DFA US Micro Cap Portfolio | 1.12% | 273,996 | 7,784,226 | 0 | 0.00% |
| Vanguard Total Stock Market Index... | 1.05% | 256,026 | 7,273,699 | 0 | 0.00% |
| Walthausen Small Cap Value Fund | 0.91% | 223,583 | 6,351,993 | +64,970 | +40.96% |
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