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
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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 FIGI (to the nearest dollar) PRN AMT PRN CALL DISCRETION MANAGER SOLE SHARED NONE
Amazon.Com, Inc. Stock 023135106   52,653,713 403,910 SH   SOLE 0 403,910 0 0
Technology Select Sector Spdr Fund ETF 81369Y803   537,227 3,090 SH   SOLE 0 3,090 0 0
Starbucks Corporation Stock 855244109   869,932 8,782 SH   SOLE 0 8,781 0 0
Dollar General Corporation Stock 256677105   4,340,784 25,567 SH   SOLE 0 25,567 0 0
Johnson & Johnson Stock 478160104   6,085,981 36,769 SH   SOLE 0 36,768 0 0
Costco Wholesale Corporation Stock 22160K105   371,501 690 SH   SOLE 0 690 0 0
Cabot Corporation Stock 127055101   4,526,045 67,664 SH   SOLE 0 67,664 0 0
Ishares Msci Emerging Markets Etf ETF 464287234   1,456,797 36,825 SH   SOLE 0 36,825 0 0
Las Vegas Sands Corp. Stock 517834107   967,382 16,679 SH   SOLE 0 16,679 0 0
Watsco, Inc. Stock 942622200   210,190 551 SH   SOLE 0 551 0 0
Yum! Brands, Inc. Stock 988498101   230,824 1,666 SH   SOLE 0 1,666 0 0
Boston Scientific Corporation Stock 101137107   229,612 4,245 SH   SOLE 0 4,245 0 0
Procter & Gamble Company Stock 742718109   3,231,878 21,299 SH   SOLE 0 21,298 0 0
Coca-Cola Company Stock 191216100   4,942,510 82,074 SH   SOLE 0 82,074 0 0
Powershares DB Commodity Index Tracking Fund ETF 46138B103   1,609,430 70,900 SH   SOLE 0 70,900 0 0
Cme Group Inc. Class A Stock 12572Q105   3,860,768 20,836 SH   SOLE 0 20,836 0 0
Fortive Corp. Stock 34959J108   31,162,403 416,777 SH   SOLE 0 416,776 0 0
Netflix, Inc. Stock 64110L106   880,980 2,000 SH   SOLE 0 2,000 0 0
Paychex, Inc. Stock 704326107   523,663 4,681 SH   SOLE 0 4,681 0 0
Medical Pptys Trust Inc Com REIT 58463J304   92,600 10,000 SH   SOLE 0 10,000 0 0
Pool Corporation Com Stock 73278L105   663,487 1,771 SH   SOLE 0 1,771 0 0
Merck & Co., Inc. Stock 58933Y105   1,191,056 10,322 SH   SOLE 0 10,322 0 0
Spdr S&P 500 Etf Trust ETF 78462F103   6,361,089 14,350 SH   SOLE 0 14,350 0 0
Mastercard Incorporated Class A Stock 57636Q104   309,920 788 SH   SOLE 0 788 0 0
Nordson Corp Com Stock 655663102   249,173 1,004 SH   SOLE 0 1,004 0 0
Vertex Pharmaceuticals Incorporated Stock 92532F100   811,504 2,306 SH   SOLE 0 2,306 0 0
Verizon Communications Inc. Stock 92343V104   527,583 14,186 SH   SOLE 0 14,186 0 0
Sherwin-Williams Company Stock 824348106   28,976,382 109,131 SH   SOLE 0 109,130 0 0
Pepsico, Inc. Stock 713448108   1,091,513 5,893 SH   SOLE 0 5,893 0 0
Te Connectivity Ltd. Stock H84989104   418,938 2,989 SH   SOLE 0 2,989 0 0
Honeywell International Inc. Stock 438516106   5,318,838 25,633 SH   SOLE 0 25,632 0 0
Xcel Energy Inc. Stock 98389B100   231,272 3,720 SH   SOLE 0 3,720 0 0
Home Depot, Inc. Stock 437076102   30,919,917 99,536 SH   SOLE 0 99,536 0 0
Automatic Data Processing, Inc. Stock 053015103   2,124,490 9,666 SH   SOLE 0 9,666 0 0
Cooper Cos Inc Com New Stock 216648402   283,355 739 SH   SOLE 0 739 0 0
Icici Bank Limited Sponsored Adr ADR 45104G104   316,242 13,702 SH   SOLE 0 13,702 0 0
Becton, Dickinson And Company Stock 075887109   211,736 802 SH   SOLE 0 802 0 0
Broadridge Financial Solutions, Inc. Stock 11133T103   4,337,997 26,191 SH   SOLE 0 26,190 0 0
Metropolitan Bk Hldg Corp Com Stock 591774104   2,475,693 71,284 SH   SOLE 0 71,284 0 0
Steris Plc Stock G8473T100   6,932,864 30,815 SH   SOLE 0 30,815 0 0
Henry Jack & Assoc Inc Com Stock 426281101   208,493 1,246 SH   SOLE 0 1,246 0 0
Banco Bilbao Vizcaya Argentaria, S.A. Sponsored Adr ADR 05946K101   81,055 10,554 SH   SOLE 0 10,554 0 0
United Therapeutics Corp Del Com Stock 91307C102   551,875 2,500 SH   SOLE 0 2,500 0 0
Waste Connections, Inc. Stock 94106B101   33,585,810 234,981 SH   SOLE 0 234,980 0 0
Berkshire Hathaway Inc. Class B Stock 084670702   1,852,994 5,434 SH   SOLE 0 5,434 0 0
Adobe Systems Incorporated Stock 00724F101   39,913,320 81,624 SH   SOLE 0 81,624 0 0
Alphabet Inc. Class A Stock 02079K305   56,960,179 475,858 SH   SOLE 0 475,857 0 0
Fiserv Inc Com Stock 337738108   334,928 2,655 SH   SOLE 0 2,655 0 0
O'Reilly Automotive, Inc. Stock 67103H107   18,612,110 19,483 SH   SOLE 0 19,483 0 0
Constellation Brands, Inc. Class A Stock 21036P108   3,243,587 13,178 SH   SOLE 0 13,178 0 0
Comcast Corporation Class A Stock 20030N101   7,058,009 169,868 SH   SOLE 0 169,867 0 0
Ase Technology Hldg Co Ltd Sponsored Ads ADR 00215W100   136,676 17,545 SH   SOLE 0 17,545 0 0
Generac Holdings Inc. Stock 368736104   477,216 3,200 SH   SOLE 0 3,200 0 0
Microsoft Corporation Stock 594918104   74,015,188 217,347 SH   SOLE 0 217,346 0 0
Berkshire Hathaway Inc. Class A Stock 084670108   4,142,480 8 SH   SOLE 0 8 0 0
Boeing Company Stock 097023105   693,449 3,284 SH   SOLE 0 3,284 0 0
Vanguard Small-Cap Index Fund ETF 922908751   200,282 1,007 SH   SOLE 0 1,007 0 0
Vanguard Mid-Cap Index Fund ETF 922908629   2,241,229 10,180 SH   SOLE 0 10,180 0 0
Nextera Energy, Inc. Stock 65339F101   25,916,537 349,279 SH   SOLE 0 349,279 0 0
Align Technology Inc Com Stock 016255101   22,044,149 62,335 SH   SOLE 0 62,335 0 0
Tesla Motors, Inc. Stock 88160R101   578,512 2,210 SH   SOLE 0 2,210 0 0
Linde Plc Com Stock G54950103   294,575 773 SH   SOLE 0 773 0 0
Thor Industries, Inc. Stock 885160101   223,457 2,159 SH   SOLE 0 2,159 0 0
Moog Inc. Class A Stock 615394202   4,916,480 45,342 SH   SOLE 0 45,342 0 0
Arch Cap Group Ltd Ord Stock G0450A105   439,220 5,868 SH   SOLE 0 5,868 0 0
Vanguard S&P 500 Index Fund ETF 922908363   255,772 628 SH   SOLE 0 628 0 0
Astrazeneca Plc Sponsored Adr ADR 046353108   237,541 3,319 SH   SOLE 0 3,319 0 0
Oncternal Therapeutics Inc Com Stock 68236P107   10,423 30,211 SH   SOLE 0 30,211 0 0
Booz Allen Hamilton Holding Corporation Class A Stock 099502106   32,861,538 294,458 SH   SOLE 0 294,458 0 0
Teradyne, Inc. Stock 880770102   222,660 2,000 SH   SOLE 0 2,000 0 0
Anterix Inc Com Stock 03676C100   314,682 9,930 SH   SOLE 0 9,930 0 0
Ishares Russell Top 200 Etf ETF 464289446   639,840 6,000 SH   SOLE 0 6,000 0 0
Inmode Ltd Shs Stock M5425M103   20,223,195 541,451 SH   SOLE 0 541,451 0 0
Wabtec Corporation Stock 929740108   27,204,261 248,056 SH   SOLE 0 248,055 0 0
Eli Lilly And Company Stock 532457108   1,664,410 3,549 SH   SOLE 0 3,549 0 0
Vanguard Russell 1000 Value Index Fund ETF 92206C714   1,512,792 21,858 SH   SOLE 0 21,858 0 0
Ishares Russell 2000 Etf ETF 464287655   1,899,105 10,141 SH   SOLE 0 10,141 0 0
Carrier Global Corporation Stock 14448C104   1,571,780 31,619 SH   SOLE 0 31,619 0 0
Sysco Corporation Stock 871829107   431,473 5,815 SH   SOLE 0 5,815 0 0
Warner Music Group Corp Stock 934550203   4,345,334 166,552 SH   SOLE 0 166,551 0 0
Ii-Vi Incorporated Stock 19247G107   547,525 10,740 SH   SOLE 0 10,740 0 0
American Electric Power Company, Inc. Stock 025537101   407,191 4,836 SH   SOLE 0 4,836 0 0
Brown-Forman Corporation Class B Stock 115637209   3,489,322 52,251 SH   SOLE 0 52,251 0 0
Bentley Sys Inc Com Cl B Stock 08265T208   340,727 6,283 SH   SOLE 0 6,283 0 0
Eastern Bankshares Inc Com Stock 27627N105   132,283 10,781 SH   SOLE 0 10,781 0 0
Atlassian Corporation Stock 049468101   215,468 1,284 SH   SOLE 0 1,284 0 0
Xylem Inc. Stock 98419M100   349,122 3,100 SH   SOLE 0 3,100 0 0
Marriott Vacations Worldwide Corp. Stock 57164Y107   2,706,618 22,055 SH   SOLE 0 22,055 0 0
Cambridge Bancorp Com Stock 132152109   657,531 12,107 SH   SOLE 0 12,107 0 0
Neogen Corporation Stock 640491106   261,000 12,000 SH   SOLE 0 12,000 0 0
Visa Inc. Class A Stock 92826C839   50,568,559 212,938 SH   SOLE 0 212,938 0 0
Hershey Company Stock 427866108   1,392,078 5,575 SH   SOLE 0 5,575 0 0
Io Biotech Inc Com Stock 449778109   85,520 43,744 SH   SOLE 0 43,744 0 0
Vanguard Growth Index Fund ETF 922908736   2,772,316 9,798 SH   SOLE 0 9,797 0 0
Ads Tec Energy Plc Shs Stock G0085J117   96,000 15,000 SH   SOLE 0 15,000 0 0
American Tower Corporation REIT 03027X100   32,187,707 165,967 SH   SOLE 0 165,967 0 0
Zebra Technologies Corp Cl A Stock 989207105   213,885 723 SH   SOLE 0 723 0 0
Ishares Core S&P Total U.S. Stock Market Etf ETF 464287150   447,422 4,573 SH   SOLE 0 4,573 0 0
Meta Platforms Inc. Stock 30303M102   35,023,900 122,043 SH   SOLE 0 122,043 0 0
Lpl Finl Hldgs Inc Com Stock 50212V100   968,651 4,455 SH   SOLE 0 4,455 0 0
Palo Alto Networks, Inc. Stock 697435105   270,330 1,058 SH   SOLE 0 1,058 0 0
Mondelez Intl Inc. Class A Stock 609207105   3,374,131 46,259 SH   SOLE 0 46,259 0 0
Broadcom Limited Stock 11135F101   9,418,871 10,858 SH   SOLE 0 10,858 0 0
Vanguard Short-Term Inflation-Protected Securities Etf ETF 922020805   379,360 8,000 SH   SOLE 0 8,000 0 0
Canadian Pacific Railway Limited Stock 13646K108   211,214 2,615 SH   SOLE 0 2,615 0 0
Ishares Core Msci Eafe Etf ETF 46432F842   214,043 3,171 SH   SOLE 0 3,171 0 0
Accenture Plc Stock G1151C101   436,332 1,414 SH   SOLE 0 1,414 0 0
Equifax Inc. Stock 294429105   305,890 1,300 SH   SOLE 0 1,300 0 0
Nice Systems Ltd. Sponsored Adr ADR 653656108   1,486,800 7,200 SH   SOLE 0 7,200 0 0
Nvidia Corporation Stock 67066G104   279,193 660 SH   SOLE 0 660 0 0
Abbvie, Inc. Stock 00287Y109   414,968 3,080 SH   SOLE 0 3,080 0 0
S&P Global Inc. Stock 78409V104   36,987,671 92,264 SH   SOLE 0 92,263 0 0
Interactive Brokers Group Inc Com Cl A Stock 45841N107   215,982 2,600 SH   SOLE 0 2,600 0 0
Cabot Oil & Gas Corporation Stock 127097103   541,015 21,384 SH   SOLE 0 21,384 0 0
Lennox Intl Inc Com Stock 526107107   206,728 634 SH   SOLE 0 634 0 0
Taiwan Semiconductor Manufacturing Co., Ltd. Sponsored Adr ADR 874039100   345,146 3,420 SH   SOLE 0 3,420 0 0
Blackstone Group L.P. Stock 09260D107   41,367,674 444,957 SH   SOLE 0 444,957 0 0
Ansys, Inc. Stock 03662Q105   231,519 701 SH   SOLE 0 701 0 0
Church & Dwight Co., Inc. Stock 171340102   1,007,813 10,055 SH   SOLE 0 10,055 0 0
Stryker Corporation Stock 863667101   407,295 1,335 SH   SOLE 0 1,335 0 0
General Dynamics Corporation Stock 369550108   344,240 1,600 SH   SOLE 0 1,600 0 0
Mcdonald'S Corporation Stock 580135101   444,386 1,489 SH   SOLE 0 1,489 0 0
Cisco Systems, Inc. Stock 17275R102   772,111 14,923 SH   SOLE 0 14,922 0 0
Autodesk, Inc. Stock 052769106   21,820,224 106,643 SH   SOLE 0 106,643 0 0
At&T Inc. Stock 00206R102   307,883 19,303 SH   SOLE 0 19,303 0 0
Vanguard Intermediate Term Bond Index Fund ETF 921937819   2,311,420 30,725 SH   SOLE 0 30,724 0 0
Charter Communications, Inc. Class A Stock 16119P108   29,887,754 81,356 SH   SOLE 0 81,356 0 0
Gaming And Leisure Properties, Inc. REIT 36467J108   4,436,629 91,552 SH   SOLE 0 91,552 0 0
Ambev Sa Sponsored Adr ADR 02319V103   53,602 16,856 SH   SOLE 0 16,856 0 0
Ishares Core S&P 500 Etf ETF 464287200   9,289,000 20,841 SH   SOLE 0 20,840 0 0
Mettler-Toledo International Inc. Stock 592688105   859,124 655 SH   SOLE 0 655 0 0
Siteone Landscape Supply Inc Com Stock 82982L103   732,367 4,376 SH   SOLE 0 4,376 0 0
Union Pacific Corporation Stock 907818108   205,234 1,003 SH   SOLE 0 1,003 0 0
Carmax Inc Com Stock 143130102   22,174,474 264,928 SH   SOLE 0 264,928 0 0
Charles Riv Labs Intl Inc Com Stock 159864107   207,517 987 SH   SOLE 0 987 0 0
Salesforce.Com, Inc. Stock 79466L302   36,464,955 172,607 SH   SOLE 0 172,607 0 0
Idexx Laboratories, Inc. Stock 45168D104   536,382 1,068 SH   SOLE 0 1,068 0 0
Thermo Fisher Scientific Inc. Stock 883556102   32,428,006 62,152 SH   SOLE 0 62,152 0 0
Lockheed Martin Corporation Stock 539830109   2,854,385 6,200 SH   SOLE 0 6,200 0 0
Jpmorgan Chase & Co. Stock 46625H100   2,522,784 17,346 SH   SOLE 0 17,345 0 0
Chevron Corporation Stock 166764100   1,073,747 6,824 SH   SOLE 0 6,823 0 0
Vanguard Ftse Developed Markets Etf ETF 921943858   1,858,837 40,252 SH   SOLE 0 40,252 0 0
Danaher Corporation Stock 235851102   2,819,319 11,747 SH   SOLE 0 11,747 0 0
Wal-Mart Stores, Inc. Stock 931142103   797,892 5,076 SH   SOLE 0 5,076 0 0
Oracle Corporation Stock 68389X105   6,391,377 53,668 SH   SOLE 0 53,668 0 0
Raytheon Technologies Corporation Stock 75513E101   1,669,336 17,041 SH   SOLE 0 17,041 0 0
Vanguard Ftse Emerging Markets Etf ETF 922042858   3,375,626 82,980 SH   SOLE 0 82,980 0 0
Texas Instruments Incorporated Stock 882508104   472,553 2,625 SH   SOLE 0 2,625 0 0
Pfizer Inc. Stock 717081103   388,582 10,594 SH   SOLE 0 10,593 0 0
Morgan Stanley Stock 617446448   5,055,533 59,198 SH   SOLE 0 59,198 0 0
Caterpillar Inc. Stock 149123101   1,083,382 4,403 SH   SOLE 0 4,403 0 0
Alphabet Inc. Class C Stock 02079K107   5,515,506 45,594 SH   SOLE 0 45,594 0 0
American Express Company Stock 025816109   32,974,914 189,293 SH   SOLE 0 189,293 0 0
Amgen Inc. Stock 031162100   209,809 945 SH   SOLE 0 945 0 0
Applied Materials, Inc. Stock 038222105   5,088,241 35,203 SH   SOLE 0 35,202 0 0
Otis Worldwide Corporation Stock 68902V107   4,325,438 48,595 SH   SOLE 0 48,594 0 0
Analog Devices, Inc. Stock 032654105   470,611 2,416 SH   SOLE 0 2,415 0 0
Williams Companies, Inc. Stock 969457100   4,674,623 143,262 SH   SOLE 0 143,261 0 0
Vanguard Dividend Appreciation Index Fund ETF 921908844   636,888 3,921 SH   SOLE 0 3,921 0 0
Healthequity Inc Stock 42226A107   27,343,598 433,063 SH   SOLE 0 433,063 0 0
Ipg Photonics Corporation Stock 44980X109   543,280 4,000 SH   SOLE 0 4,000 0 0
Vanguard Short-Term Bond Index Fund ETF 921937827   889,383 11,769 SH   SOLE 0 11,769 0 0
Philip Morris International Inc. Stock 718172109   1,481,620 15,177 SH   SOLE 0 15,177 0 0
Pnc Financial Services Group, Inc. Stock 693475105   749,025 5,947 SH   SOLE 0 5,947 0 0
Bristol-Myers Squibb Company Stock 110122108   2,638,129 41,253 SH   SOLE 0 41,253 0 0
Altria Group, Inc. Stock 02209S103   597,500 13,190 SH   SOLE 0 13,189 0 0
Loews Corp Com Stock 540424108   795,276 13,393 SH   SOLE 0 13,393 0 0
American Water Works Company, Inc. Stock 030420103   22,720,390 159,162 SH   SOLE 0 159,162 0 0
Agilent Technologies, Inc. Stock 00846U101   263,949 2,195 SH   SOLE 0 2,195 0 0
Exxon Mobil Corporation Stock 30231G102   380,400 3,547 SH   SOLE 0 3,546 0 0
Unitedhealth Group Incorporated Stock 91324P102   41,162,894 85,642 SH   SOLE 0 85,641 0 0
Travelers Companies, Inc. Stock 89417E109   1,029,804 5,930 SH   SOLE 0 5,930 0 0
Deere & Company Stock 244199105   697,332 1,721 SH   SOLE 0 1,721 0 0
Novo Nordisk A/S Sponsored Adr Class B ADR 670100205   214,587 1,326 SH   SOLE 0 1,326 0 0
Paypal Holdings Inc. Stock 70450Y103   18,871,711 282,807 SH   SOLE 0 282,807 0 0
Charles Schwab Corporation Stock 808513105   33,695,696 594,490 SH   SOLE 0 594,490 0 0
Toronto-Dominion Bank Stock 891160509   514,683 8,300 SH   SOLE 0 8,300 0 0
Blackrock, Inc. Stock 09247X101   413,993 599 SH   SOLE 0 599 0 0
Apple Inc. Stock 037833100   59,343,797 305,943 SH   SOLE 0 305,943 0 0
Abbott Laboratories Stock 002824100   7,559,268 69,338 SH   SOLE 0 69,338 0 0
Walt Disney Company Stock 254687106   602,722 6,751 SH   SOLE 0 6,750 0 0
Booking Holdings Inc Stock 09857L108   24,039,688 8,903 SH   SOLE 0 8,902 0 0
Marsh & Mclennan Companies, Inc. Stock 571748102   200,869 1,068 SH   SOLE 0 1,068 0 0
Ishares Russell 1000 Value Etf ETF 464287598   4,076,907 25,831 SH   SOLE 0 25,831 0 0
Ferrari N V Com Stock N3167Y103   210,086 646 SH   SOLE 0 646 0 0