The Securities and Exchange Commission has not necessarily reviewed the information in this filing and has not determined if it is accurate and complete.
The reader should not assume that the information is accurate and complete.

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
FORM 13F

FORM 13F INFORMATION TABLE
OMB APPROVAL
OMB Number: 3235-0006
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hours per response: 23.8
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
AMERISOURCEBERGEN CORP COM 03073E105 218,781 2,237,936 SH   SOLE   2,237,936 0 93,548
ALBANY INTL CORP CL A 012348108 357 4,863 SH   SOLE   4,863 0 0
ARTHUR J GALLAGHER & CO COM 363576109 161,618 1,306,430 SH   SOLE   1,306,430 0 389,070
AKUMIN INC COM 01021F109 2,338 776,843 SH   SOLE   776,843 0 0
ALLISON TRANSMISSION HLDG INC COM 01973R101 271,948 6,305,312 SH   SOLE   6,305,312 0 415,134
AMERICAN HOMES 4 RENT REIT CL A 02665T306 125,168 4,172,250 SH   SOLE   4,172,250 0 1,260,212
ARGO GROUP INTL COM G0464B107 11,604 265,536 SH   SOLE   265,536 0 59,719
ARMSTRONG WORLD INDUSTRIES COM 04247X102 24,958 335,501 SH   SOLE   335,501 0 103,744
AXALTA COATING S COM G0750C108 8,262 289,403 SH   SOLE   289,403 0 7,111
AUTOZONE INC COM 053332102 267,630 225,764 SH   SOLE   225,764 0 9,510
BOEING CO COM 097023105 2,141 10,000 SH   SOLE   10,000 0 0
BOOZ ALLEN HAMILTON HLDG CORP CL A 099502106 51,605 591,932 SH   SOLE   591,932 0 182,304
BROOKFIELD ASSET MGMT INC CL A CL A LTD VT SH 112585104 136,785 3,309,671 SH   SOLE   3,309,671 0 46,643
FRANKLIN RESOURCES INC COM 354613101 686 27,466 SH   SOLE   27,466 0 0
BROOKFIELD INF-A COM SB VTG SHS A 11275Q107 350 5,502 SH   SOLE   5,502 0 0
BOOKING HOLDINGS COM 09857L108 53,091 23,837 SH   SOLE   23,837 0 992
BANK OF MONTREAL COM 063671101 9,882 130,000 SH   SOLE   130,000 0 0
BANK OF NOVA SCOTIA COM 064149107 87,445 1,618,252 SH   SOLE   1,618,252 0 25,540
BERKSHIRE HATHAWAY CL A CL A 084670108 86,606 249 SH   SOLE   249 0 0
BERKSHIRE HATHAWAY CL B CL B NEW 084670702 85,749 369,813 SH   SOLE   369,813 0 25,879
BROWN & BROWN INC COM 115236101 70,285 1,482,495 SH   SOLE   1,482,495 0 537,629
CARRIER GLOBAL CORP COM 14448C104 249,063 6,602,948 SH   SOLE   6,602,948 0 276,445
CBIZ INC COM 124805102 50,937 1,914,205 SH   SOLE   1,914,205 0 694,185
CDW CORP/DE COM 12514G108 482 3,654 SH   SOLE   3,654 0 0
COLLIERS INTERNA SUB VTG SHS 194693107 50,561 568,279 SH   SOLE   568,279 0 7,421
CDN NAT RES COM 136385101 950 39,558 SH   SOLE   39,558 0 0
CDN NATL RAILWAY CO COM 136375102 111,932 1,018,381 SH   SOLE   1,018,381 0 15,189
CDN PACIFIC RR LTD COM 13645T100 10,353 29,853 SH   SOLE   29,853 0 1,374
COPART INC COM 217204106 36,052 283,316 SH   SOLE   283,316 0 6,896
CRA INTERNATIONA COM 12618T105 1,112 21,842 SH   SOLE   21,842 0 0
DIAGEO PLC S-ADR SPON ADR NEW 25243Q205 752 4,736 SH   SOLE   4,736 0 0
DOLLAR TREE INC COM 256746108 250,293 2,316,672 SH   SOLE   2,316,672 0 94,666
Eaton Vance Floating-Rate Inco COM 278279104 11,513 874,823 SH   SOLE   874,823 0 0
EQUIFAX INC COM 294429105 99,418 515,548 SH   SOLE   515,548 0 21,296
EMCOR GROUP INC COM 29084Q100 17,531 191,684 SH   SOLE   191,684 0 84,319
ENBRIDGE INC COM 29250N105 92,922 2,906,121 SH   SOLE   2,906,121 0 42,269
EQUITY COM SH BEN INT 294628102 48,985 1,795,624 SH   SOLE   1,795,624 0 512,452
EXPEDITORS INTL OF WASHINGTON COM 302130109 354 3,721 SH   SOLE   3,721 0 0
FACEBOOK INC-A CL A 30303M102 357,624 1,309,211 SH   SOLE   1,309,211 0 55,037
FEDERATED HERMES INC CL B 314211103 60,690 2,100,727 SH   SOLE   2,100,727 0 604,197
CEDAR FAIR LP DEPOSITRY UNIT 150185106 60,495 1,537,749 SH   SOLE   1,537,749 0 37,316
GAMCO INVESTO-A CL A COM 361438104 1,608 90,618 SH   SOLE   90,618 0 0
GEN ELEC CO COM 369604103 4,320 400,000 SH   SOLE   400,000 0 0
GRACO INC COM 384109104 53,723 742,545 SH   SOLE   742,545 0 229,551
CGI INC CL A SUB VTG 12532H104 85,746 1,081,018 SH   SOLE   1,081,018 0 14,043
GENERAC HOLDINGS COM 368736104 91,706 403,263 SH   SOLE   403,263 0 121,273
GENTEX CORP COM 371901109 135,865 4,004,269 SH   SOLE   4,004,269 0 1,052,991
ALPHABET INC-A CAP STK CL A 02079K305 381,527 217,687 SH   SOLE   217,687 0 9,332
HOULIHAN LOKEY INC CL A 441593100 107,445 1,598,170 SH   SOLE   1,598,170 0 488,609
HOUGHTON MIFFLIN HARCOURT CO COM 44157R109 35,405 10,632,055 SH   SOLE   10,632,055 0 3,069,765
HELMERICH & PAYN COM 423452101 370 15,973 SH   SOLE   15,973 0 0
HENRY SCHEIN INC COM 806407102 152,788 2,285,187 SH   SOLE   2,285,187 0 94,462
iSHARES iBOXX HI-YLD BOND ETF IBOXX HI YD ETF 464288513 5,238 60,000 SH   SOLE   60,000 0 0
INTEGRA LIFESCIE COM NEW 457985208 338 5,206 SH   SOLE   5,206 0 0
INTERCONTINENTAL EXCHANGE INC COM 45866F104 216,036 1,873,845 SH   SOLE   1,873,845 0 76,718
IMPERIAL OIL LTD COM NEW 453038408 346 18,231 SH   SOLE   18,231 0 0
INVITATION HOMES COM 46187W107 346 11,642 SH   SOLE   11,642 0 0
GARTNER INC COM 366651107 251 1,565 SH   SOLE   1,565 0 0
JEFFERIES FINANCIAL GROUP INC. COM 47233W109 141,680 5,759,341 SH   SOLE   5,759,341 0 1,714,076
JOHNSON & JOHNSON COM 478160104 315,525 2,004,859 SH   SOLE   2,004,859 0 82,781
JP MORGAN CHASE & CO COM 46625H100 2,481 19,522 SH   SOLE   19,522 0 0
KAR AUCTION SERV INC COM 48238T109 39,007 2,096,035 SH   SOLE   2,096,035 0 685,831
KENNAMETAL INC COM 489170100 89,131 2,459,461 SH   SOLE   2,459,461 0 724,767
COCA-COLA FEMSA SAB S-ADR SPONSORD ADR REP 191241108 31,967 693,437 SH   SOLE   693,437 0 20,711
LAB CORP OF AMER HLDG COM NEW 50540R409 22,063 108,393 SH   SOLE   108,393 0 2,664
L3HARRIS TECHNOL COM 502431109 135,408 716,369 SH   SOLE   716,369 0 31,193
GRAND CANYON EDU COM 38526M106 77,491 832,257 SH   SOLE   832,257 0 242,981
LAMB WESTON COM 513272104 316 4,017 SH   SOLE   4,017 0 0
MAIN STREET CAPITAL CORP COM 56035L104 53,883 1,670,265 SH   SOLE   1,670,265 0 563,573
MCDONALDS CORP COM 580135101 9,562 44,563 SH   SOLE   44,563 0 0
MARKETAXESS HLDG INC COM 57060D108 39,458 69,156 SH   SOLE   69,156 0 20,579
3M CO COM 88579Y101 1,433 8,200 SH   SOLE   8,200 0 0
MIND CTI LTD ORD M70240102 1,182 456,254 SH   SOLE   456,254 0 0
MICROSOFT CORP COM 594918104 409,823 1,842,563 SH   SOLE   1,842,563 0 75,210
M&T BK CORP COM 55261F104 1,273 10,000 SH   SOLE   10,000 0 0
NUTRIEN LTD COM 67077M108 68,181 1,417,510 SH   SOLE   1,417,510 0 24,692
NORTHERN TRUST CORP COM 665859104 170,125 1,826,551 SH   SOLE   1,826,551 0 75,862
NEWS CORP-CL A CL A 65249B109 179,738 10,002,111 SH   SOLE   10,002,111 0 425,630
ORACLE CORP COM 68389X105 217,996 3,369,854 SH   SOLE   3,369,854 0 142,553
PENSKE AUTO GRP INC COM 70959W103 141,354 2,380,099 SH   SOLE   2,380,099 0 695,095
PEPSICO INC COM 713448108 100,423 677,164 SH   SOLE   677,164 0 27,085
PROCTER & GAMBLE CO COM 742718109 175,514 1,261,422 SH   SOLE   1,261,422 0 51,551
PREMIER INC CL A CL A 74051N102 116,698 3,324,724 SH   SOLE   3,324,724 0 928,870
PRIMERICA INC COM 74164M108 161,535 1,206,116 SH   SOLE   1,206,116 0 353,232
POINTS INTERNATI COM NEW 730843208 663 45,317 SH   SOLE   45,317 0 0
RESTAURANT BRAND INTERN COM 76131D103 128,383 2,100,188 SH   SOLE   2,100,188 0 28,438
RITCHIE BROS AUCTIONEERS INC COM 767744105 1,660 23,866 SH   SOLE   23,866 0 0
ROGERS COMMUNI-B CL B 775109200 26,453 568,352 SH   SOLE   568,352 0 12,745
RE/MAX HOLDINGS INC CL A 75524W108 65,827 1,811,906 SH   SOLE   1,811,906 0 528,787
RAYTHEON TECHNOL COM 75513E101 143,083 2,000,874 SH   SOLE   2,000,874 0 91,266
ROYAL BANK OF CANADA COM 780087102 91,439 1,113,118 SH   SOLE   1,113,118 0 16,157
SABRE CORP COM 78573M104 107,238 8,921,595 SH   SOLE   8,921,595 0 384,832
GLOBAL SELF STOR COM 37955N106 719 179,412 SH   SOLE   179,412 0 0
SHAW COM CL B NON-VTG CL B CONV 82028K200 54,135 3,085,265 SH   SOLE   3,085,265 0 42,249
SYNNEX CORP COM 87162W100 54,015 663,252 SH   SOLE   663,252 0 186,628
SIMPSON MFG COM 829073105 34,023 364,072 SH   SOLE   364,072 0 107,619
SS&C TECH HLDG INC COM 78467J100 358,264 4,924,586 SH   SOLE   4,924,586 0 838,395
EXTENDED STAY AM UNIT 99/99/9999B 30224P200 229 15,445 SH   SOLE   15,445 0 0
STANTEC INC COM 85472N109 84,114 2,594,348 SH   SOLE   2,594,348 0 34,262
STRATEGIC EDUCATION INC COM 86272C103 85,571 897,626 SH   SOLE   897,626 0 262,244
SUNCOR ENERGY INC COM 867224107 4,630 276,092 SH   SOLE   276,092 0 2,883
TELUS CORP COM 87971M103 330 16,652 SH   SOLE   16,652 0 0
TORONTO-DOMINION BANK COM NEW 891160509 90,199 1,596,805 SH   SOLE   1,596,805 0 24,982
TRUIST FINANCIAL CORP COM 89832Q109 243,802 5,086,636 SH   SOLE   5,086,636 0 216,659
THOMSON REUTERS CORP COM NEW 884903709 251 3,062 SH   SOLE   3,062 0 0
TC Energy Corp COM 87807B107 91,056 2,240,248 SH   SOLE   2,240,248 0 31,830
MARRIOTT VACATIONS WORLDWIDE COM 57164Y107 38,361 279,557 SH   SOLE   279,557 0 82,047
VALVOLINE INC COM 92047W101 319 13,770 SH   SOLE   13,770 0 0
WALGREENS BOOTS ALLIANCE INC COM 931427108 98,108 2,460,077 SH   SOLE   2,460,077 0 106,562
WADDELL & REED-A CL A 930059100 85,189 3,344,677 SH   SOLE   3,344,677 0 982,146
WYNDHAM HOTELS & RESORTS INC COM 98311A105 51,045 858,771 SH   SOLE   858,771 0 266,991
ZTO EXPRESS -ADR SPONSORED ADS A 98980A105 14,864 509,726 SH   SOLE   509,726 0 0