| TOP INSTITUTIONAL HOLDERS |
| Holder | Shares | % Out | Value* | Reported | | Greylock XI GP Limited Partnership | 3,560,348 | 5.66 | $66,934,542 | 31-Dec-08 | | Firelake Capital Management, LLC | 390,000 | .62 | $7,332,000 | 31-Dec-08 | | NORTHERN TRUST CORPORATION | 338,595 | .54 | $11,302,301 | 30-Jun-09 | | CALPERS (CALIFORNIA-PUBLIC EMPLOYEES RETIREMENT SYSTEM) | 268,591 | .43 | $8,965,567 | 30-Jun-09 | | RBC Capital Markets Corporation | 117,868 | .19 | $3,934,433 | 30-Jun-09 | | Mariner Quantitative Solutions, LLC | 5,600 | .01 | $105,280 | 31-Dec-08 | | RBC Professional Trader Group LLC | 1,000 | .00 | $33,380 | 30-Jun-09 | | Chronim Investments, Inc. | 300 | .00 | $5,640 | 31-Dec-08 |
|
| Holder | Shares | % Out | Value* | Reported | | MERGER FUND, THE | 1,954,000 | 3.11 | $65,224,520 | 30-Jun-09 | | VANGUARD SMALL-CAP INDEX FUND | 438,496 | .70 | $14,636,996 | 30-Jun-09 | | VANGUARD TOTAL STOCK MARKET INDEX FUND | 333,271 | .53 | $11,124,585 | 30-Jun-09 | | VANGUARD SMALL-CAP GROWTH INDEX FUND | 277,156 | .44 | $9,251,467 | 30-Jun-09 | | COLLEGE RETIREMENT EQUITIES FUND-STOCK ACCOUNT | 236,814 | .38 | $7,904,851 | 30-Jun-09 | | VANGUARD EXTENDED MARKET INDEX FUND | 212,620 | .34 | $7,097,255 | 30-Jun-09 | | TIAA-CREF FDS-MID-CAP GROWTH FUND | 186,563 | .30 | $6,227,472 | 30-Jun-09 | | MET Investors Ser Tr-RCM Technology Port | 186,170 | .30 | $6,214,354 | 30-Jun-09 | | Transamerica Ser Tr-Transamerica Science & Technology VP | 137,000 | .22 | $4,573,060 | 30-Jun-09 | | AXA PREMIER VIP MULTIMANAGER TECHNOLOGY PORTFOLIO | 134,181 | .21 | $4,478,961 | 30-Jun-09 |
|
|
*
|
Value shown is computed using the security's price on the report date given.
|
|