| TOP INSTITUTIONAL HOLDERS |
| Holder | Shares | % Out | Value* | Reported | | ALGER (FRED) MANAGEMENT INC | 1,177,532 | 5.20 | $17,839,609 | 30-Sep-09 | | JANUS CAPITAL MANAGEMENT, LLC | 923,860 | 4.08 | $13,996,479 | 30-Sep-09 | | KINGDON CAPITAL MANAGEMENT LLC | 678,000 | 2.99 | $10,271,700 | 30-Sep-09 | | GILDER, GAGNON, HOWE & CO. | 421,078 | 1.86 | $6,379,331 | 30-Sep-09 | | PIER CAPITAL, LLC | 325,651 | 1.44 | $4,933,612 | 30-Sep-09 | | FRANKLIN RESOURCES, INC | 323,100 | 1.43 | $4,894,965 | 30-Sep-09 | | Cortina Asset Management, LLC | 221,527 | .98 | $3,356,134 | 30-Sep-09 | | Barclays Global Investors UK Holdings Ltd | 175,546 | .77 | $2,659,521 | 30-Sep-09 | | Stephens Investment Management Group | 157,350 | .69 | $2,383,852 | 30-Sep-09 | | Ameriprise Financial, Inc. | 144,388 | .64 | $2,187,478 | 30-Sep-09 |
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| Holder | Shares | % Out | Value* | Reported | | JANUS VENTURE FUND | 480,870 | 2.12 | $7,285,180 | 30-Sep-09 | | ALGER SMALL CAP GROWTH INSTITUTIONAL PORTFOLIO | 351,700 | 1.55 | $6,488,865 | 31-Jul-09 | | Pacific Select Fund-Small Cap Growth Portfolio | 265,000 | 1.17 | $4,014,750 | 30-Sep-09 | | Wells Fargo Advantage Small Cap Value Fd | 189,500 | .84 | $2,994,100 | 31-Oct-09 | | Alger Portfolios-Alger SmallCap Growth Portfolio | 167,100 | .74 | $2,531,565 | 30-Sep-09 | | FRANKLIN STRATEGIC SERIES-SMALL CAP GROWTH FUND | 142,300 | .63 | $2,155,845 | 30-Sep-09 | | MFS NEW DISCOVERY FUND | 138,900 | .61 | $2,202,954 | 31-Aug-09 | | Columbia Fds Ser Tr I-Columbia Small Cap Growth Fd | 127,871 | .56 | $2,028,034 | 31-Aug-09 | | ALGER FUND-SMALL CAP GROWTH FUND | 120,400 | .53 | $2,221,380 | 31-Jul-09 | | Janus Triton Fund | 116,140 | .51 | $1,759,521 | 30-Sep-09 |
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Value shown is computed using the security's price on the report date given.
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