| TOP INSTITUTIONAL HOLDERS |
| Holder | Shares | % Out | Value* | Reported | | WADDELL & REED FINANCIAL INC. | 1,141,326 | 7.37 | $51,736,307 | 30-Sep-09 | | Barclays Global Investors UK Holdings Ltd | 1,102,660 | 7.12 | $49,983,577 | 30-Sep-09 | | RIVERBRIDGE PARTNERS LLC | 758,006 | 4.89 | $34,360,411 | 30-Sep-09 | | ZEVENBERGEN CAPITAL INVESTMENTS LLC | 714,200 | 4.61 | $32,374,686 | 30-Sep-09 | | VANGUARD GROUP, INC. (THE) | 655,346 | 4.23 | $29,706,834 | 30-Sep-09 | | TIMES SQUARE CAPITAL MANAGEMENT | 592,250 | 3.82 | $26,846,692 | 30-Sep-09 | | BLAIR (WILLIAM) & COMPANY, L.L.C. | 433,488 | 2.80 | $19,650,011 | 30-Sep-09 | | WEATHERBIE, M.A. & CO, INC. | 416,397 | 2.69 | $18,875,276 | 30-Sep-09 | | DIMENSIONAL FUND ADVISORS LP | 404,563 | 2.61 | $18,338,840 | 30-Sep-09 | | Capital Research Global Investors | 1,733,000 | 11.19 | $78,556,890 | 30-Sep-09 |
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| Holder | Shares | % Out | Value* | Reported | | AMCAP FUND | 993,000 | 6.41 | $45,012,690 | 30-Sep-09 | | WADDELL & REED ADVISORS FDS-SMALL CAP FUND | 701,600 | 4.53 | $27,172,968 | 30-Jun-09 | | SMALLCAP WORLD FUND | 515,000 | 3.32 | $19,945,950 | 30-Jun-09 | | SENTINEL SMALL COMPANY FUND | 465,000 | 3.00 | $21,078,450 | 30-Sep-09 | | IVY SMALL CAP GROWTH FUND | 389,000 | 2.51 | $15,065,970 | 30-Jun-09 | | ISHARES RUSSELL 2000 INDEX FD | 225,519 | 1.46 | $10,222,776 | 30-Sep-09 | | AMERICAN FDS INSURANCE SER-GLOBAL SMALL CAPITALIZATION F | 225,000 | 1.45 | $10,199,250 | 30-Sep-09 | | ISHARES S&P SMALLCAP 600 INDEX FD | 200,244 | 1.29 | $9,239,258 | 31-Oct-09 | | VANGUARD SMALL-CAP INDEX FUND | 187,863 | 1.21 | $7,275,933 | 30-Jun-09 | | DFA U.S. MICRO CAP SERIES | 154,630 | 1.00 | $5,407,411 | 30-Apr-09 |
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Value shown is computed using the security's price on the report date given.
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