Foster Dykema Cabot & Co 13F-HR Quarterly holdings report by institutional manager

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	(x$1000)	PRN AMT	PRN	CALL	DISCRETION	MANAGER	SOLE	SHARED	NONE
Sprott Physical Gold Trust Uni	COM	85207H104	934	67,700	SH		SOLE		67,700	0	0
Sprott Physical Silver Trust	COM	85207K107	247	32,170	SH		SOLE		32,170	0	0
JPMorgan Hedged Equity Select	COM	46637K281	89,628	3,461,888	SH		SOLE		3,461,888	0	0
3M Company	COM	88579Y101	554	3,156	SH		SOLE		3,156	0	0
Abbott Laboratories	COM	002824100	521	4,407	SH		SOLE		4,407	0	0
AbbVie, Inc.	COM	00287y109	397	3,676	SH		SOLE		3,676	0	0
Accenture PLC	COM	G1151c101	17,866	55,846	SH		SOLE		55,846	0	0
Agilent Technologies, Inc.	COM	00846U101	208	1,320	SH		SOLE		1,320	0	0
Air Products and Chemicals, In	COM	009158106	698	2,725	SH		SOLE		2,725	0	0
Alphabet Inc. Class A	COM	02079K305	3,005	1,124	SH		SOLE		1,124	0	0
Alphabet Inc. Class C	COM	02079K107	5,160	1,936	SH		SOLE		1,936	0	0
Amazon.com, Inc.	COM	023135106	20,124	6,126	SH		SOLE		6,126	0	0
American Express Company	COM	025816109	19,561	116,759	SH		SOLE		116,759	0	0
Amphenol Corporation Class A	COM	032095101	22,709	310,099	SH		SOLE		310,099	0	0
Apple Inc	COM	037833100	14,517	102,594	SH		SOLE		102,594	0	0
Athena Technology Acquisition	COM	04687A109	1,003	101,006	SH		SOLE		101,006	0	0
Automatic Data Processing, Inc	COM	053015103	270	1,353	SH		SOLE		1,353	0	0
Baxter International Inc.	COM	071813109	248	3,084	SH		SOLE		3,084	0	0
Becton Dickinson & Company	COM	075887109	12,745	51,846	SH		SOLE		51,846	0	0
Berkshire Hathaway, Inc. Cl. A	COM	084670108	2,057	5	SH		SOLE		5	0	0
Berkshire Hathaway, Inc. Cl. B	COM	084670702	22,548	82,611	SH		SOLE		82,611	0	0
BlackRock Inc.	COM	09247X101	474	565	SH		SOLE		565	0	0
Bristol-Myers Squibb Company	COM	110122108	642	10,857	SH		SOLE		10,857	0	0
Cisco Systems, Inc.	COM	17275R102	404	7,424	SH		SOLE		7,424	0	0
Coca-Cola Company	COM	191216100	2,062	39,297	SH		SOLE		39,297	0	0
Colgate-Palmolive Company	COM	194162103	819	10,834	SH		SOLE		10,834	0	0
Cortexyme Inc	COM	22053A107	281	3,061	SH		SOLE		3,061	0	0
Costco Wholesale Corporation	COM	22160K105	21,261	47,315	SH		SOLE		47,315	0	0
Danaher Corp	COM	235851102	414	1,360	SH		SOLE		1,360	0	0
Eli Lilly and Company	COM	532457108	705	3,053	SH		SOLE		3,053	0	0
Enterprise Bancorp, Inc.	COM	293668109	2,005	55,771	SH		SOLE		55,771	0	0
Exxon Mobil Corporation	COM	30231G102	316	5,372	SH		SOLE		5,372	0	0
Hershey Company	COM	427866108	231	1,366	SH		SOLE		1,366	0	0
IBM Corporation	COM	459200101	251	1,809	SH		SOLE		1,809	0	0
Illinois Tool Works Inc.	COM	452308109	530	2,566	SH		SOLE		2,566	0	0
Intel Corporation	COM	458140100	362	6,800	SH		SOLE		6,800	0	0
Johnson & Johnson	COM	478160104	1,821	11,274	SH		SOLE		11,274	0	0
Johnson Controls International	COM	G51502105	487	7,158	SH		SOLE		7,158	0	0
JPMorgan Chase & Co.	COM	46625H100	24,742	151,150	SH		SOLE		151,150	0	0
Laboratory Corporation of Amer	COM	50540R409	372	1,321	SH		SOLE		1,321	0	0
Lockheed Martin Corporation	COM	539830109	482	1,396	SH		SOLE		1,396	0	0
Loews Corporation	COM	540424108	324	6,000	SH		SOLE		6,000	0	0
Lowes Cos. Inc.	COM	548661107	21,423	105,606	SH		SOLE		105,606	0	0
Luminar Technologies Inc Class	COM	550424105	3,773	241,874	SH		SOLE		241,874	0	0
McCormick & Co., Inc. Non-Voti	COM	579780206	1,296	16,000	SH		SOLE		16,000	0	0
McDonald's Corporation	COM	580135101	919	3,813	SH		SOLE		3,813	0	0
Merck & Co., Inc.	COM	58933y105	627	8,343	SH		SOLE		8,343	0	0
Microsoft Corporation	COM	594918104	17,601	62,433	SH		SOLE		62,433	0	0
Netflix, Inc.	COM	64110l106	969	1,588	SH		SOLE		1,588	0	0
NIKE, Inc. Class B	COM	654106103	16,363	112,669	SH		SOLE		112,669	0	0
Novus Capital Corp. II Class A	COM	67012W104	1,000	101,010	SH		SOLE		101,010	0	0
PepsiCo, Inc.	COM	713448108	1,479	9,834	SH		SOLE		9,834	0	0
Pfizer Inc.	COM	717081103	829	19,284	SH		SOLE		19,284	0	0
Procter & Gamble Company	COM	742718109	5,964	42,660	SH		SOLE		42,660	0	0
Progressive Corporation	COM	743315103	556	6,148	SH		SOLE		6,148	0	0
Prologis Inc.	COM	74340W103	17,268	137,673	SH		SOLE		137,673	0	0
Raytheon Technologies Corporat	COM	75513E101	254	2,950	SH		SOLE		2,950	0	0
S&P Global, Inc.	COM	78409v104	722	1,700	SH		SOLE		1,700	0	0
Sherwin-Williams Co.	COM	824348106	18,108	64,735	SH		SOLE		64,735	0	0
Target Corp.	COM	87612E106	293	1,282	SH		SOLE		1,282	0	0
Tesla Motors, Inc.	COM	88160r101	252	325	SH		SOLE		325	0	0
The Estee Lauder Cos Inc.	COM	518439104	8,193	27,318	SH		SOLE		27,318	0	0
Thermo Fisher Scientific Inc	COM	883556102	23,508	41,146	SH		SOLE		41,146	0	0
Union Pacific Corporation	COM	907818108	673	3,432	SH		SOLE		3,432	0	0
Visa Inc. Class A	COM	92826c839	20,590	92,435	SH		SOLE		92,435	0	0
Wal-Mart Stores, Inc.	COM	931142103	876	6,285	SH		SOLE		6,285	0	0
Walt Disney Company	COM	254687106	15,972	94,413	SH		SOLE		94,413	0	0
Columbia Emerging Markets Cons	COM	19762B509	225	9,033	SH		SOLE		9,033	0	0
Financial Select Sector SPDR E	COM	81369Y605	19,861	529,206	SH		SOLE		529,206	0	0
Industrial Select Sector SPDR	COM	81369Y704	18,411	188,177	SH		SOLE		188,177	0	0
iShares Core MSCI EAFE ETF	COM	46432F842	63,681	857,652	SH		SOLE		857,652	0	0
iShares Core S&P 500 ETF	COM	464287200	1,162	2,697	SH		SOLE		2,697	0	0
iShares Core S&P Small Cap ETF	COM	464287804	408	3,733	SH		SOLE		3,733	0	0
iShares Edge MSCI Min Vol USA	COM	46429b697	1,597	21,722	SH		SOLE		21,722	0	0
iShares Edge MSCI USA Momentum	COM	46432F396	15,647	89,107	SH		SOLE		89,107	0	0
iShares Edge MSCI USA Quality	COM	46432f339	509	3,867	SH		SOLE		3,867	0	0
iShares MSCI Global Impact ETF	COM	46435G532	2,040	21,232	SH		SOLE		21,232	0	0
iShares Russell 1000 Growth ET	COM	464287614	4,485	16,367	SH		SOLE		16,367	0	0
iShares Russell 1000 Value ETF	COM	464287598	2,259	14,435	SH		SOLE		14,435	0	0
iShares Russell 2000 ETF	COM	464287655	494	2,258	SH		SOLE		2,258	0	0
iShares Russell Midcap ETF	COM	464287499	925	11,832	SH		SOLE		11,832	0	0
iShares S&P 500 Growth ETF	COM	464287309	2,246	30,386	SH		SOLE		30,386	0	0
SPDR S&P 500 ETF Trust	COM	78462F103	168,560	392,786	SH		SOLE		392,786	0	0
SPDR S&P 500 Fossil Fuel Reser	COM	78468R796	2,980	28,052	SH		SOLE		28,052	0	0
SPDR S&P 600 Small Cap Value E	COM	78464A300	239	2,920	SH		SOLE		2,920	0	0
Technology Select Sector SPDR	COM	81369Y803	4,188	28,044	SH		SOLE		28,044	0	0
Vanguard Dividend Appreciation	COM	921908844	260	1,693	SH		SOLE		1,693	0	0
Vanguard FTSE Developed Market	COM	921943858	331	6,558	SH		SOLE		6,558	0	0
Vanguard S&P 500 Index Fund	COM	922908363	2,399	6,083	SH		SOLE		6,083	0	0
Vanguard Total International S	COM	921909768	287	4,540	SH		SOLE		4,540	0	0
Vanguard Total Stock Market In	COM	922908769	15,390	69,305	SH		SOLE		69,305	0	0
Vanguard Value Index Fund	COM	922908744	229	1,690	SH		SOLE		1,690	0	0