| TOP INSTITUTIONAL HOLDERS |
| Holder | Shares | % Out | Value* | Reported | | FMR LLC | 1,928,250 | 7.50 | $16,235,865 | 30-Sep-09 | | PRICE (T.ROWE) ASSOCIATES INC | 1,208,815 | 4.70 | $10,178,222 | 30-Sep-09 | | GRANAHAN INVESTMENT MANAGEMENT INC. | 1,186,750 | 4.61 | $9,992,435 | 30-Sep-09 | | DEUTSCHE BANK AKTIENGESELLSCHAFT | 1,013,019 | 3.94 | $8,529,619 | 30-Sep-09 | | MASSACHUSETTS FINANCIAL SERVICES CO - OTHER | 942,040 | 3.66 | $7,931,976 | 30-Sep-09 | | NEW YORK STATE COMMON RETIREMENT FUND | 885,133 | 3.44 | $7,452,819 | 30-Sep-09 | | RS Investment Management Co., LLC | 819,751 | 3.19 | $6,902,303 | 30-Sep-09 | | VANGUARD GROUP, INC. (THE) | 755,383 | 2.94 | $6,360,324 | 30-Sep-09 | | Barclays Global Investors UK Holdings Ltd | 664,918 | 2.58 | $5,598,609 | 30-Sep-09 | | BROWN CAPITAL MANAGEMENT, INC. | 3,731,072 | 14.50 | $31,415,626 | 30-Sep-09 |
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| Holder | Shares | % Out | Value* | Reported | | BROWN CAPITAL MANAGEMENT SMALL COMPANY FUND | 1,308,754 | 5.09 | $10,627,082 | 30-Jun-09 | | Fidelity Small Cap Growth Fund | 1,168,857 | 4.54 | $9,187,216 | 31-Jul-09 | | VANGUARD EXPLORER FUND, INC. | 872,700 | 3.39 | $6,859,422 | 31-Jul-09 | | PRICE (T.ROWE) SMALL CAP STOCK FUND | 750,000 | 2.92 | $6,315,000 | 30-Sep-09 | | MFS NEW DISCOVERY FUND | 412,310 | 1.60 | $3,331,464 | 31-Aug-09 | | MFS VARIABLE INSURANCE TRUST-MFS NEW DISCOVERY SERIES | 398,940 | 1.55 | $3,239,392 | 30-Jun-09 | | RS Investment Trust-RS Small Cap Growth Fund | 381,352 | 1.48 | $3,210,983 | 30-Sep-09 | | VANGUARD VARIABLE INSURANCE FUND-SMALL COMPANY GROWTH | 308,000 | 1.20 | $2,500,960 | 30-Jun-09 | | ISHARES RUSSELL 2000 INDEX FD | 278,831 | 1.08 | $2,347,757 | 30-Sep-09 | | RS Investment Trust-Technology Fund | 240,814 | .94 | $2,027,653 | 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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