| TOP INSTITUTIONAL HOLDERS |
| Holder | Shares | % Out | Value* | Reported | | BROOKSIDE CAPITAL MANAGEMENT, LLC | 4,125,488 | 6.34 | $90,884,500 | 30-Sep-09 | | Sankaty Advisors, LLC | 2,335,126 | 3.59 | $51,442,825 | 30-Sep-09 | | ALGER (FRED) MANAGEMENT INC | 2,246,684 | 3.45 | $49,494,448 | 30-Sep-09 | | Bain Capital Venture Investors, LLC | 12,565,314 | 19.31 | $276,813,867 | 30-Sep-09 | | WESTFIELD CAPITAL MANAGEMENT COMPANY | 1,079,610 | 1.66 | $23,783,808 | 30-Sep-09 | | FMR LLC | 1,020,450 | 1.57 | $22,480,513 | 30-Sep-09 | | JP MORGAN CHASE & COMPANY | 741,405 | 1.14 | $16,333,152 | 30-Sep-09 | | WADDELL & REED FINANCIAL INC. | 709,800 | 1.09 | $15,636,894 | 30-Sep-09 | | Copper Rock Capital Partners LLC | 700,124 | 1.08 | $15,423,731 | 30-Sep-09 | | Tygh Capital Management, Inc. | 592,979 | .91 | $13,063,327 | 30-Sep-09 |
|
| Holder | Shares | % Out | Value* | Reported | | FIDELITY CONTRAFUND INC | 637,500 | .98 | $11,347,500 | 31-Oct-09 | | ALGER MIDCAP GROWTH INSTITUTIONAL PORTFOLIO | 437,400 | .67 | $8,748,000 | 31-Jul-09 | | ALGER SMALL CAP GROWTH INSTITUTIONAL PORTFOLIO | 420,350 | .65 | $8,407,000 | 31-Jul-09 | | HARBOR SMALL CAP GROWTH FUND | 234,200 | .36 | $4,684,000 | 31-Jul-09 | | JENNISON SMALL COMPANY FUND | 226,400 | .35 | $4,029,920 | 31-Oct-09 | | Legg Mason Partners Small Cap Growth Fd | 215,310 | .33 | $4,743,279 | 30-Sep-09 | | Pacific Select Fund-Small Cap Growth Portfolio | 214,400 | .33 | $3,535,456 | 30-Jun-09 | | JP MORGAN SMALL CAP GROWTH FUND | 193,400 | .30 | $3,442,520 | 31-Oct-09 | | VANGUARD MORGAN GROWTH FUND | 170,000 | .26 | $2,803,300 | 30-Jun-09 | | RS Investment Trust-RS Small Cap Growth Fund | 167,437 | .26 | $3,688,637 | 30-Sep-09 |
|
|
*
|
Value shown is computed using the security's price on the report date given.
|
|