| TOP INSTITUTIONAL HOLDERS |
| Holder | Shares | % Out | Value* | Reported | | RHO CAPITAL PARTNERS INC | 4,952,934 | 4.46 | $3,764,229 | 30-Jun-09 | | MARXE, AUSTIN W. & GREENHOUSE, DAVID M. | 1,103,783 | .99 | $7,549,875 | 30-Sep-09 | | NORTHERN TRUST CORPORATION | 146,546 | .13 | $111,374 | 30-Jun-09 | | CALPERS (CALIFORNIA-PUBLIC EMPLOYEES RETIREMENT SYSTEM) | 121,285 | .11 | $92,176 | 30-Jun-09 | | RBC Capital Markets Corporation | 3,000 | .00 | $2,280 | 30-Jun-09 |
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| Holder | Shares | % Out | Value* | Reported | | VANGUARD EXTENDED MARKET INDEX FUND | 524,701 | .47 | $398,772 | 30-Jun-09 | | VANGUARD TOTAL STOCK MARKET INDEX FUND | 409,991 | .37 | $311,593 | 30-Jun-09 | | DFA U.S. SMALL CAP VALUE SERIES | 46,617 | .04 | $15,849 | 30-Apr-09 | | VANGUARD INSTITUTIONAL INDEX-INST TOTAL STOCK MARKET IND | 31,133 | .03 | $9,028 | 31-Mar-09 | | VANGUARD BALANCED INDEX FUND | 23,263 | .02 | $17,679 | 30-Jun-09 | | DFA U.S. Vector Equity Portfolio | 20,900 | .02 | $7,106 | 30-Apr-09 | | Old Westbury Global Small & Mid Cap Fund | 11,975 | .01 | $4,071 | 30-Apr-09 | | DFA U.S. MICRO CAP SERIES | 10,444 | .01 | $3,550 | 30-Apr-09 | | DFA U.S. Core Equity 2 Portfolio | 7,200 | .01 | $2,448 | 30-Apr-09 | | QUANTITATIVE MASTER SERIES TR-EXTENDED MARKET INDEX SERI | 5,300 | .00 | $4,028 | 30-Jun-09 |
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Value shown is computed using the security's price on the report date given.
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