Main Street Research 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
Berkshire Hathaway Cl A	COM	084990175	1,632	6	SH		SOLE		6	0	0
ASML Holdings	COM	N07059210	10,305	39,388	SH		SOLE		39,388	0	0
AbbVie Inc	COM	00287Y109	594	7,792	SH		SOLE		7,792	0	0
Abbott Laboratories	COM	002824100	405	5,134	SH		SOLE		5,134	0	0
Adobe Systems Inc	COM	00724F101	18,042	56,692	SH		SOLE		56,692	0	0
Akamai Technologies	COM	00971T101	12,452	136,106	SH		SOLE		136,106	0	0
Alibaba Group Holding Ltd	COM	01609W102	8,339	42,880	SH		SOLE		42,880	0	0
Alphabet Inc Cl A	COM	02079K305	8,192	7,050	SH		SOLE		7,050	0	0
Alphabet Inc Cl C	COM	02079K107	881	758	SH		SOLE		758	0	0
Amazon.com	COM	023135106	17,793	9,126	SH		SOLE		9,126	0	0
American Electric Power	COM	025537101	217	2,708	SH		SOLE		2,708	0	0
Apple Computer	COM	037833100	21,217	83,435	SH		SOLE		83,435	0	0
At&t Inc	COM	00206R102	11,911	408,596	SH		SOLE		408,596	0	0
Auto Data Processing	COM	053015103	514	3,761	SH		SOLE		3,761	0	0
Autodesk Inc.	COM	052769106	528	3,380	SH		SOLE		3,380	0	0
Berkshire Hathaway Inc Cl B	COM	084670702	1,571	8,592	SH		SOLE		8,592	0	0
Biogen IDEC Inc	COM	09062X103	17,619	55,689	SH		SOLE		55,689	0	0
Bristol-Myers Squibb Co.	COM	110122108	1,600	28,705	SH		SOLE		28,705	0	0
Charles Schwab Corp	COM	808513105	1,429	42,497	SH		SOLE		42,497	0	0
Chevron Corp	COM	166764100	1,244	17,170	SH		SOLE		17,170	0	0
Cisco Systems, Inc.	COM	17275R102	997	25,366	SH		SOLE		25,366	0	0
Clorox Co. Calif.	COM	189054109	1,792	10,341	SH		SOLE		10,341	0	0
Coca Cola Co.	COM	191216100	408	9,222	SH		SOLE		9,222	0	0
Colgate-Palmolive Co	COM	194162103	725	10,928	SH		SOLE		10,928	0	0
Comcast Corp Cl A	COM	20030N101	395	11,490	SH		SOLE		11,490	0	0
Consolidated Edison	COM	209115104	11,378	145,869	SH		SOLE		145,869	0	0
Constellation Brands	COM	21036P108	206	1,435	SH		SOLE		1,435	0	0
Costco Corp	COM	22160K105	16,206	56,837	SH		SOLE		56,837	0	0
Danaher Corp	COM	235851102	12,409	89,657	SH		SOLE		89,657	0	0
Dollar General Corp	COM	256677105	12,799	84,758	SH		SOLE		84,758	0	0
Dominion Resources	COM	25746U109	732	10,144	SH		SOLE		10,144	0	0
Exxon Mobil Corp	COM	30231G102	888	23,391	SH		SOLE		23,391	0	0
Fair Issac Inc	COM	303250104	1,026	3,335	SH		SOLE		3,335	0	0
General Electric Co.	COM	369604103	81	10,186	SH		SOLE		10,186	0	0
General Mills, Inc.	COM	370334104	12,808	242,719	SH		SOLE		242,719	0	0
Gilead Sciences	COM	375558103	13,742	183,813	SH		SOLE		183,813	0	0
Home Depot	COM	437076102	6,832	36,589	SH		SOLE		36,589	0	0
IAC Interactive Corp	COM	44919P508	475	2,650	SH		SOLE		2,650	0	0
Illumina Inc	COM	452327109	376	1,375	SH		SOLE		1,375	0	0
Johnson & Johnson	COM	478160104	1,382	10,537	SH		SOLE		10,537	0	0
Kimberly-Clark Corp	COM	494368103	11,866	92,799	SH		SOLE		92,799	0	0
Lowes Companies Inc	COM	548661107	209	2,434	SH		SOLE		2,434	0	0
McDonald's Corp.	COM	580135101	4,289	25,939	SH		SOLE		25,939	0	0
Merck & Co Inc	COM	58933Y105	704	9,150	SH		SOLE		9,150	0	0
Microsoft Corp	COM	594918104	15,168	96,179	SH		SOLE		96,179	0	0
Mondelez Intl Inc	COM	609207105	237	4,737	SH		SOLE		4,737	0	0
NetEase Inc	COM	64110W102	12,823	39,952	SH		SOLE		39,952	0	0
Netflix Inc.	COM	64110L106	427	1,137	SH		SOLE		1,137	0	0
NextEra Energy Inc	COM	65339F101	11,266	46,819	SH		SOLE		46,819	0	0
Nike	COM	654106103	226	2,731	SH		SOLE		2,731	0	0
Norfolk Southern Corp.	COM	655844108	352	2,410	SH		SOLE		2,410	0	0
Nvidia Corp	COM	67066G104	8,536	32,381	SH		SOLE		32,381	0	0
PayPal Holdings Inc	COM	70450Y103	402	4,195	SH		SOLE		4,195	0	0
Pepsico	COM	713448108	260	2,168	SH		SOLE		2,168	0	0
Pfizer, Inc.	COM	717081103	207	6,328	SH		SOLE		6,328	0	0
Procter & Gamble Co.	COM	742718109	39,740	361,269	SH		SOLE		361,269	0	0
Regeneron Pharmaceuticals Inc	COM	75886F107	11,926	24,425	SH		SOLE		24,425	0	0
Salesforce.com	COM	79466l302	318	2,208	SH		SOLE		2,208	0	0
Smucker JM Company	COM	832696405	393	3,539	SH		SOLE		3,539	0	0
Starbucks Corp	COM	855244109	506	7,695	SH		SOLE		7,695	0	0
TAL Education Group Adr	COM	874080104	761	14,280	SH		SOLE		14,280	0	0
Taiwan Semiconductor Adr	COM	874039100	5,844	122,279	SH		SOLE		122,279	0	0
Tencent Holdings Ltd	COM	88032Q109	7,097	144,576	SH		SOLE		144,576	0	0
Tesla Motors Inc	COM	88160R101	277	529	SH		SOLE		529	0	0
Thermo Fisher Scientific Inc	COM	883556102	482	1,701	SH		SOLE		1,701	0	0
Veeva Systems Inc	COM	922475108	250	1,600	SH		SOLE		1,600	0	0
Verizon Communications	COM	92343V104	13,623	253,545	SH		SOLE		253,545	0	0
Visa Inc	COM	92826C839	11,912	73,931	SH		SOLE		73,931	0	0
Wal-Mart Stores Inc.	COM	931142103	12,683	111,624	SH		SOLE		111,624	0	0
Walt Disney Co.	COM	254687106	331	3,428	SH		SOLE		3,428	0	0
Wells Fargo	COM	949746101	646	22,500	SH		SOLE		22,500	0	0
Xylem Inc	COM	98419M100	212	3,250	SH		SOLE		3,250	0	0
Credit Suisse FI Large Cap Enh	ETF	22542D423	232	1,021	SH		SOLE		1,021	0	0
Ishares Edge Msci USA Momntm E	ETF	46432F396	227	2,128	SH		SOLE		2,128	0	0
S P D R S&P 500	ETF	78462F103	331	1,284	SH		SOLE		1,284	0	0
Sector SPDR Tech Select	ETF	81369Y803	223	2,770	SH		SOLE		2,770	0	0
Vanguard Total Stock Market VI	ETF	922908769	760	5,899	SH		SOLE		5,899	0	0
American Tower Corp	REIT	03027X100	298	1,370	SH		SOLE		1,370	0	0