| Silver Lake Group, L.L.C. | 89,557,840 | $1.6bn | 35.3% |
| PRICE T ROWE ASSOCIATES INC /MD/ | 15,706,958 | $283.5m | 0.0% |
| BlackRock, Inc. | 12,063,590 | $217.7m | 0.0% |
| Capital World Investors | 10,690,358 | $193.0m | 0.0% |
| FMR LLC | 7,652,905 | $138.1m | 0.0% |
| ALLIANCEBERNSTEIN L.P. | 7,620,910 | $89.6m | 0.0% |
| CAT ROCK CAPITAL MANAGEMENT LP | 4,228,018 | $76.3m | 17.7% |
| VANGUARD PORTFOLIO MANAGEMENT LLC | 4,118,357 | $74.3m | 0.0% |
| BAMCO INC /NY/ | 3,502,140 | $63.2m | 0.1% |
| VANGUARD CAPITAL MANAGEMENT LLC | 3,451,299 | $62.3m | 0.0% |
| Boston Partners | 3,230,897 | $59.5m | 0.1% |
| STATE STREET CORP | 3,220,986 | $58.1m | 0.0% |
| DIMENSIONAL FUND ADVISORS LP | 3,107,859 | $56.1m | 0.0% |
| AMERICAN CENTURY COMPANIES INC | 2,277,976 | $41.1m | 0.0% |
| GEODE CAPITAL MANAGEMENT, LLC | 2,197,223 | $39.7m | 0.0% |
| EMERALD ADVISERS, LLC | 2,188,875 | $39.5m | 0.9% |
| Sunriver Management LLC | 1,940,912 | $35.0m | 5.5% |
| JPMORGAN CHASE & CO | 1,855,581 | $33.7m | 0.0% |
| EMERALD MUTUAL FUND ADVISERS TRUST | 1,425,858 | $25.7m | 0.9% |
| JENNISON ASSOCIATES LLC | 1,177,058 | $21.2m | 0.0% |
| MORGAN STANLEY | 1,020,872 | $18.4m | 0.0% |
| CORTLAND ASSOCIATES INC/MO | 881,185 | $15.9m | 2.3% |
| NORTHERN TRUST CORP | 825,364 | $14.9m | 0.0% |
| PALISADE CAPITAL MANAGEMENT, LP | 805,144 | $14.5m | 0.6% |
| AMERIPRISE FINANCIAL INC | 772,765 | $13.9m | 0.0% |