| Herald Investment Management Ltd | 280,000 | $22,419,600 | 4.35% |
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| Conestoga Capital Advisors, LLC | 3,000,039 | $240,333,124 | 3.82% |
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| Aperture Investors, LLC | 359,309 | $28,793,594 | 3.43% |
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| Summit Creek Advisors LLC | 337,095 | $27,004,680 | 3.38% |
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| First Growth Investment Manager LP | 21,750 | $1,742,393 | 2.93% |
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| Pembroke Management, LTD | 226,444 | $24,030,237 | 2.59% |
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| Durable Capital Partners LP | 3,530,806 | $282,852,869 | 2.48% |
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| GENEVA CAPITAL MANAGEMENT LLC | 1,437,057 | $115,122,672 | 2.27% |
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| JARISLOWSKY, FRASER Ltd | 4,466,346 | $358,185 | 2.13% |
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| Aubrey Capital Management Ltd | 40,500 | $3,244,085 | 2.13% |
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| Premier Fund Managers Ltd | 456,428 | $35,814 | 1.42% |
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| NBW CAPITAL LLC | 68,342 | $5,477,683 | 1.28% |
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| Ativo Capital Management LLC | 13,970 | $1,119,169 | 1.18% |
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| Granite Investment Partners, LLC | 360,361 | $28,868,520 | 1.15% |
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| AtonRa Partners | 9,254 | $741,942 | 1.15% |
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| LRT Capital Management, LLC | 19,800 | $1,552,914 | 1.14% |
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| Echo Street Capital Management LLC | 1,580,523 | $126,613,649 | 1.08% |
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| Addenda Capital Inc. | 239,899 | $25,458,082 | 1.07% |
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| Triasima Portfolio Management inc. | 120,120 | $12,747,134 | 0.81% |
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| Hillsdale Investment Management Inc. | 104,700 | $8,387,072 | 0.77% |
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