| Lionstone Capital Management LLC | 216,200 | $31,465,748 | 9.81% |
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| R.P. Boggs & Co. | 46,168 | $6,719,281 | 5.18% |
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| Durable Capital Partners LP | 3,008,868 | $437,910,649 | 4.00% |
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| JACOBSON & SCHMITT ADVISORS, LLC | 95,155 | $13,848,843 | 3.93% |
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| Baskin Financial Services Inc. | 248,156 | $36,088 | 3.66% |
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| Conestoga Capital Advisors, LLC | 1,362,702 | $198,327,645 | 3.41% |
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| Triasima Portfolio Management inc. | 177,705 | $25,967,011 | 2.38% |
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| AltraVue Capital, LLC | 129,525 | $18,851,069 | 2.24% |
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| Knowledge Leaders Capital, LLC | 10,300 | $1,505,080 | 2.22% |
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| Aubrey Capital Management Ltd | 20,000 | $2,584,666 | 1.48% |
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| Financial Council Asset Management Inc | 10,000 | $1,455,400 | 1.16% |
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| Onex Canada Asset Management Inc. | 101,885 | $14,821,001 | 1.14% |
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| BOSTON FINANCIAL MANGEMENT LLC | 202,810 | $29,516,972 | 1.10% |
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| Hillsdale Investment Management Inc. | 77,571 | $11,274,548 | 1.03% |
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| FRED ALGER MANAGEMENT, LLC | 1,225,336 | $178,335,401 | 1.02% |
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| LINCLUDEN MANAGEMENT LTD | 57,109 | $8,311 | 1.00% |
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| OSTERWEIS CAPITAL MANAGEMENT INC | 69,543 | $10,121,288 | 0.74% |
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| Quadrature Capital Ltd | 233,700 | $34,237,456 | 0.72% |
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| GFI Investment Counsel Ltd. | 29,750 | $4,330 | 0.66% |
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| ROYCE & ASSOCIATES LP | 424,821 | $61,828,448 | 0.63% |
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