The Securities and Exchange Commission has not necessarily reviewed the information in this filing and has not determined if it is accurate and complete. | |||||||||||||||||
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UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 13F FORM 13F INFORMATION TABLE |
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| COLUMN 1 | COLUMN 2 | COLUMN 3 | COLUMN 4 | COLUMN 5 | COLUMN 6 | COLUMN 7 | COLUMN 8 | ||||
| VALUE | SHRS OR | SH/ | PUT/ | INVESTMENT | OTHER | VOTING AUTHORITY | |||||
| NAME OF ISSUER | TITLE OF CLASS | CUSIP | (x$1000) | PRN AMT | PRN | CALL | DISCRETION | MANAGER | SOLE | SHARED | NONE |
| APPLE INC | COM | 037833100 | 24,395 | 128,432 | SH | SOLE | 128,432 | 0 | 0 | ||
| BERKSHIRE HATHAWAY INC DEL | CL B NEW | 084670702 | 20,500 | 102,046 | SH | SOLE | 102,046 | 0 | 0 | ||
| CECO ENVIRONMENTAL CORP | COM | 125141101 | 4,126 | 573,000 | SH | SOLE | 573,000 | 0 | 0 | ||
| CHARTER COMMUNICATIONS INC N | CL A | 16119P108 | 24,183 | 69,713 | SH | SOLE | 69,713 | 0 | 0 | ||
| FIRSTSERVICE CORP NEW | SUB VTG SH | 33767E103 | 3,514 | 39,440 | SH | SOLE | 39,440 | 0 | 0 | ||
| GENPACT LIMITED | SHS | G3922B107 | 16,793 | 477,358 | SH | SOLE | 477,358 | 0 | 0 | ||
| ISHARES TR | INTRM TR CRP ETF | 464288638 | 397 | 7,590 | SH | SOLE | 7,590 | 0 | 0 | ||
| MASTERCARD INC | CL A | 57636Q104 | 3,012 | 12,800 | SH | SOLE | 12,800 | 0 | 0 | ||
| MSCI INC | COM | 55354G100 | 32,017 | 161,018 | SH | SOLE | 161,018 | 0 | 0 | ||
| SHERWIN WILLIAMS CO | COM | 824348106 | 26,352 | 61,186 | SH | SOLE | 61,186 | 0 | 0 | ||
| SITEONE LANDSCAPE SUPPLY INC | COM | 82982L103 | 19,779 | 346,087 | SH | SOLE | 346,087 | 0 | 0 | ||
| THE CHARLES SCHWAB CORPORATI | COM | 808513105 | 19,099 | 446,652 | SH | SOLE | 446,652 | 0 | 0 | ||
| VISA INC | COM CL A | 92826C839 | 30,329 | 194,188 | SH | SOLE | 194,188 | 0 | 0 | ||