Carderock Capital Management 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

OMB APPROVAL

OMB Number:		3235-0006
Expires:	Oct 31, 2018
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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
Abbott Laboratories	COM	002824100	527	13,415	SH		SOLE		0	0	13,415
Accenture PLC Cl A	COM	G1151C101	5,969	52,686	SH		SOLE		0	0	52,686
Air Products & Chemicals	COM	009158106	1,462	10,295	SH		SOLE		0	0	10,295
Alphabet Inc	COM	02079K305	2,970	4,222	SH		SOLE		0	0	4,222
Ametek	COM	031100100	3,047	65,918	SH		SOLE		0	0	65,918
Amgen	COM	031162100	4,018	26,410	SH		SOLE		0	0	26,410
Amphenol Corp	COM	032095101	4,325	75,435	SH		SOLE		0	0	75,435
Ansys	COM	03662Q105	3,026	33,340	SH		SOLE		0	0	33,340
Aon PLC	COM	G0408V102	2,460	22,519	SH		SOLE		0	0	22,519
Apple Computer	COM	037833100	5,394	56,424	SH		SOLE		0	0	56,424
Automatic Data Proc	COM	053015103	4,593	49,997	SH		SOLE		0	0	49,997
Autozone	COM	053332102	2,436	3,068	SH		SOLE		0	0	3,068
Bard C R Inc N J Com	COM	067383109	2,871	12,208	SH		SOLE		0	0	12,208
Becton Dickinson & Co	COM	075887109	1,346	7,936	SH		SOLE		0	0	7,936
Bristol-Myers Squibb	COM	110122108	1,070	14,550	SH		SOLE		0	0	14,550
CVS Health Corp	COM	126650100	2,283	23,851	SH		SOLE		0	0	23,851
Canadian National Railway Corp	COM	136375102	1,331	22,539	SH		SOLE		0	0	22,539
Celgene Corp	COM	151020104	2,529	25,637	SH		SOLE		0	0	25,637
Check Point Software	COM	M22465104	3,119	39,146	SH		SOLE		0	0	39,146
Chevron Texaco Corp	COM	166764100	605	5,775	SH		SOLE		0	0	5,775
Church & Dwight	COM	171340102	5,460	53,064	SH		SOLE		0	0	53,064
Cimarex Energy Co	COM	171798101	239	2,000	SH		SOLE		0	0	2,000
Citrix Systems	COM	177376100	322	4,015	SH		SOLE		0	0	4,015
Clorox Co	COM	189054109	367	2,651	SH		SOLE		0	0	2,651
Cognizant Tech	COM	192446102	1,887	32,962	SH		SOLE		0	0	32,962
Comcast Corp New Cl A	COM	20030N101	4,578	70,223	SH		SOLE		0	0	70,223
Costco Wholesale	COM	22160K105	1,039	6,616	SH		SOLE		0	0	6,616
Danaher Corp	COM	235851102	5,730	56,732	SH		SOLE		0	0	56,732
Dominion Resources	COM	25746U109	619	7,949	SH		SOLE		0	0	7,949
Dr Pepper Snapple Group Inc	COM	26138E109	3,251	33,646	SH		SOLE		0	0	33,646
Ecolab	COM	278865100	5,035	42,450	SH		SOLE		0	0	42,450
Equifax	COM	294429105	1,646	12,822	SH		SOLE		0	0	12,822
Exxon Mobil Corp	COM	30231G102	432	4,610	SH		SOLE		0	0	4,610
Factset Research System	COM	303075105	303	1,880	SH		SOLE		0	0	1,880
Fiserv	COM	337738108	4,482	41,221	SH		SOLE		0	0	41,221
Gilead Sciences	COM	375558103	1,184	14,195	SH		SOLE		0	0	14,195
Henry Schein	COM	806407102	5,417	30,638	SH		SOLE		0	0	30,638
Home Depot	COM	437076102	338	2,650	SH		SOLE		0	0	2,650
Honeywell	COM	438516106	1,706	14,664	SH		SOLE		0	0	14,664
Idexx Labs	COM	45168D104	5,404	58,196	SH		SOLE		0	0	58,196
Illinois Tool Works	COM	452308109	2,139	20,532	SH		SOLE		0	0	20,532
Intuit	COM	461202103	5,188	46,486	SH		SOLE		0	0	46,486
Johnson & Johnson	COM	478160104	1,046	8,626	SH		SOLE		0	0	8,626
Knight Transn	COM	499064103	233	8,750	SH		SOLE		0	0	8,750
Marriott Intl New Cl A	COM	571903202	579	8,712	SH		SOLE		0	0	8,712
MasterCard Worldwide	COM	57636Q104	4,958	56,302	SH		SOLE		0	0	56,302
McCormick & Co	COM	579780206	4,484	42,039	SH		SOLE		0	0	42,039
Merck & Co New	COM	58933Y105	470	8,152	SH		SOLE		0	0	8,152
Mettler Toledo Intl	COM	592688105	3,106	8,512	SH		SOLE		0	0	8,512
NextEra Energy	COM	65339F101	596	4,569	SH		SOLE		0	0	4,569
Nike Cl B	COM	654106103	4,282	77,565	SH		SOLE		0	0	77,565
Noble Energy	COM	655044105	206	5,750	SH		SOLE		0	0	5,750
Novartis AG ADR	COM	66987V109	994	12,052	SH		SOLE		0	0	12,052
Novo Nordisk Spons ADR	COM	670100205	6,076	112,985	SH		SOLE		0	0	112,985
O'Reilly Automotive New	COM	67103H107	4,042	14,908	SH		SOLE		0	0	14,908
PPG Industries	COM	693506107	3,394	32,587	SH		SOLE		0	0	32,587
Paychex	COM	704326107	309	5,200	SH		SOLE		0	0	5,200
Priceline	COM	741503403	719	576	SH		SOLE		0	0	576
Public Storage Com	COM	74460D109	2,337	9,144	SH		SOLE		0	0	9,144
RPM	COM	749685103	2,826	56,570	SH		SOLE		0	0	56,570
Reynolds America	COM	761713106	224	4,158	SH		SOLE		0	0	4,158
Roper Technologies Inc	COM	776696106	5,279	30,952	SH		SOLE		0	0	30,952
Schlumberger Ltd	COM	806857108	959	12,129	SH		SOLE		0	0	12,129
Snap-On Inc	COM	833034101	2,804	17,766	SH		SOLE		0	0	17,766
Starbucks Corp	COM	855244109	3,424	59,945	SH		SOLE		0	0	59,945
Stericycle	COM	858912108	3,833	36,810	SH		SOLE		0	0	36,810
TRPrice Assoc	COM	74144T108	2,043	27,996	SH		SOLE		0	0	27,996
Taiwan Semiconductor Mfg ADR	COM	874039100	3,026	115,367	SH		SOLE		0	0	115,367
Thermo Fisher Scientific	COM	883556102	4,368	29,562	SH		SOLE		0	0	29,562
Toro Co	COM	891092108	4,362	49,460	SH		SOLE		0	0	49,460
United Technologies	COM	913017109	569	5,548	SH		SOLE		0	0	5,548
V F Corp	COM	918204108	1,130	18,378	SH		SOLE		0	0	18,378
Verizon Communication	COM	92343v104	222	3,972	SH		SOLE		0	0	3,972
WPP PLC ADR New	COM	92937A102	2,135	20,427	SH		SOLE		0	0	20,427
Wells Fargo & Co	COM	949746101	1,771	37,425	SH		SOLE		0	0	37,425