| TOP INSTITUTIONAL HOLDERS |
| Holder | Shares | % Out | Value* | Reported | | MASSACHUSETTS FINANCIAL SERVICES CO - OTHER | 2,110,026 | 5.05 | $12,027,148 | 30-Sep-09 | | Technology Crossover Management V, L.L.C. | 12,381,914 | 29.66 | $70,576,909 | 30-Sep-09 | | JANUS CAPITAL MANAGEMENT, LLC | 1,125,175 | 2.70 | $6,413,497 | 30-Sep-09 | | MUNDER CAPITAL MANAGEMENT, INC. | 861,360 | 2.06 | $4,909,752 | 30-Sep-09 | | Coatue Management, LLC | 859,544 | 2.06 | $4,899,400 | 30-Sep-09 | | BAMCO INC. | 728,011 | 1.74 | $4,149,662 | 30-Sep-09 | | DIMENSIONAL FUND ADVISORS LP | 353,365 | .85 | $2,014,180 | 30-Sep-09 | | PIONEER INVESTMENT MANAGEMENT INC. | 339,516 | .81 | $1,935,241 | 30-Sep-09 | | VANGUARD GROUP, INC. (THE) | 327,344 | .78 | $1,865,860 | 30-Sep-09 | | Barclays Global Investors UK Holdings Ltd | 311,528 | .75 | $1,775,709 | 30-Sep-09 |
|
| Holder | Shares | % Out | Value* | Reported | | MFS NEW DISCOVERY FUND | 937,850 | 2.25 | $6,020,997 | 31-Aug-09 | | MFS VARIABLE INSURANCE TRUST-MFS NEW DISCOVERY SERIES | 889,386 | 2.13 | $3,557,544 | 30-Jun-09 | | BARON iOPPORTUNITY FUND | 728,011 | 1.74 | $4,149,662 | 30-Sep-09 | | Munder Internet Fund | 663,771 | 1.59 | $2,655,084 | 30-Jun-09 | | JANUS GLOBAL TECHNOLOGY FUND | 511,010 | 1.22 | $2,912,757 | 30-Sep-09 | | JANUS VENTURE FUND | 416,620 | 1.00 | $2,374,734 | 30-Sep-09 | | MFS Var Ins Tr II-MFS New Discovery Port | 293,960 | .70 | $1,175,840 | 30-Jun-09 | | Pioneer Growth Opportunities Fund | 283,343 | .68 | $1,615,055 | 30-Sep-09 | | JOHN HANCOCK SMALL CAP EQUITY FUND | 263,508 | .63 | $1,660,100 | 31-Oct-09 | | Transamerica Ser Tr-Munder Net 50 VP | 180,279 | .43 | $721,116 | 30-Jun-09 |
|
|
*
|
Value shown is computed using the security's price on the report date given.
|
|