HolderBook

CARDEROCK CAPITAL MANAGEMENT INC

Reported holdings as of Q2 2026, from 31 quarterly filings.

This filer last reported in Q2 2026; the most recent quarter on file across all filers is Q3 2026. Firms that restructure stop filing under one CIK and start under another, so a successor entity may hold these positions now under a similar name.

CIK
1168889
Reported value
$455.8M
Positions
67
Top 10 weight
37.4%
Filed
2026-07-07
Days after quarter end
7

Holdings

Download these holdings as CSV

SecurityTickerValue SharesWeightWeight change Held Change
LAM RESEARCH CORPLRCX$32.0M73,7977.02%+1.96pp8q-23.0%-$9.5M
ALPHABET INCGOOGL$20.2M56,4864.43%+0.32pp31q-2.2%-$463.2K
AMPHENOL CORPAPH$18.8M106,5754.12%+0.58pp31q-6.1%-$1.2M
ELI LILLY & COLLY$15.4M12,8183.37%+0.51pp9q+1.9%+$283.1K
APPLE INCAAPL$15.0M51,9093.30%-0.01pp31q-1.5%-$232.1K
HEICO CORP NEWHEI$14.3M40,0813.13%+0.59pp14q+6.8%+$910.4K
MONOLITHIC PWR SYS INCMPWR$14.2M10,3013.12%-0.03pp10q-11.7%-$1.9M
QUANTA SVCS INCPWR$14.1M19,6213.10%flat16q-14.2%-$2.3M
FORTINET INCFTNT$14.0M91,4003.08%+1.24pp23qHELD
MASTERCARD INCORPORATEDMA$12.5M24,3572.74%-0.09pp31q+6.1%+$715.4K
MONSTER BEVERAGE CORP NEWMNST$12.0M124,3412.62%+0.54pp9q+6.7%+$754.1K
NVIDIA CORPORATIONNVDA$11.3M56,5442.48%+0.17pp9q+5.5%+$587.1K
AMETEK INCAME$11.1M45,8412.43%+0.02pp31q+0.8%+$83.5K
PARKER-HANNIFIN CORPPH$10.9M11,1122.38%-0.12pp14q-1.8%-$202.5K
THERMO FISHER SCIENTIFIC INCTMO$10.5M20,8602.29%-0.29pp31q-1.9%-$205.1K
MICROSOFT CORPMSFT$10.2M27,4352.25%-0.22pp31q+1.9%+$189.1K
COSTCO WHOLESALE CORPORATIONCOST$10.1M10,8212.22%-0.17pp31q+11.4%+$1.0M
FEDERAL SIGNAL CORPFSS$9.6M74,7742.11%+1.19pp3q+118.6%+$5.2M
WW GRAINGER INCGWW$9.4M6,8742.05%+0.40pp10q+12.4%+$1.0M
CADENCE DESIGN SYSTEM INCCDNS$9.3M24,8992.05%+0.18pp23q-8.8%-$904.1K
OREILLY AUTOMOTIVE INCORLY$9.3M101,0932.04%-0.29pp31q-1.2%-$111.4K
IDEXX LABS INCIDXX$8.8M16,6271.92%-0.37pp31q+1.0%+$84.8K
SHERWIN WILLIAMS COSHW$8.7M25,3981.92%+0.02pp31q+6.1%+$499.3K
STERIS PLCSTE$8.4M40,0901.85%-0.26pp11q+3.5%+$282.0K
LINDE PLCLIN$8.1M15,6061.78%-0.04pp5q+5.1%+$394.9K
MOTOROLA SOLUTIONS INCMSI$7.9M19,0691.74%-0.18pp5q+6.8%+$503.3K
AON PLCAON$7.8M23,5591.71%-0.01pp26q+9.1%+$654.4K
CINTAS CORPCTAS$7.5M43,9701.64%-0.26pp25q-3.4%-$264.5K
INTUITIVE SURGICAL INCISRG$7.2M18,2071.59%-0.52pp10q-1.8%-$132.0K
HOME DEPOT INCHD$7.1M20,0321.55%-0.09pp31q-0.8%-$55.7K
AIR PRODUCTS AND CHEMICALS IAPD$6.9M23,5051.51%-0.26pp31q-5.1%-$367.4K
ARCH CAP GROUP LTDACGL$6.8M70,3481.50%-0.20pp14q-1.5%-$105.5K
STRYKER CORPORATIONSYK$6.8M21,6421.50%-0.16pp9q+6.4%+$410.6K
S&P GLOBAL INCSPGI$6.7M16,3571.46%-0.91pp25q-27.5%-$2.5M
ILLINOIS TOOL WKS INCITW$6.6M24,4201.45%-0.11pp31q+0.9%+$61.4K
MOODYS CORPMCO$6.2M13,7501.37%-0.47pp31q-19.4%-$1.5M
WASTE CONNECTIONS INCWCN$5.8M35,0271.28%-0.07pp25q+4.2%+$233.2K
INGERSOLL RAND INCIR$5.3M65,2231.17%-0.11pp13q+0.9%+$48.9K
AUTOMATIC DATA PROCESSING INADP$5.3M23,6461.16%-0.56pp31q-31.2%-$2.4M
TJX COS INC NEWTJX$5.2M34,4861.15%+0.04pp3q+22.6%+$964.8K
WALMART INCWMT$5.1M44,8371.11%-0.12pp3q+12.0%+$543.3K
WATSCO INCWSO$4.8M11,5191.05%+0.73pp9q+215.6%+$3.3M
INTEL CORPINTC$4.5M32,0000.98%+0.63pp2qHELD
EATON CORP PLCETN$3.9M9,1600.86%-newNEW
GALLAGHER ARTHUR J & COAJG$3.7M16,3300.82%-newNEW
WATERS CORPWAT$2.8M7,4170.61%-newNEW
BERKSHIRE HATHAWAY INC DELBRKA$2.2M30.49%-0.04pp2qHELD
LOEWS CORPL$1.4M12,0000.30%-0.02pp2qHELD
EXXON MOBIL CORPXOMXXXX$988.9K7,2330.22%-0.21pp20q-29.1%-$406.7K
INTUITINTU$889.2K3,4070.20%-1.47pp31q-78.1%-$3.2M
CHURCH & DWIGHT CO INCCHD$862.0K8,8980.19%-0.03pp31q-7.3%-$67.8K
ISHARES TRIYW$725.2K2,8750.16%+0.03pp20qHELD
MARRIOTT INTL INC NEWMAR$673.7K1,8180.15%-0.02pp23q-11.0%-$83.4K
LEIDOS HOLDINGS INCLDOS$643.7K6,2510.14%-1.24pp6q-82.6%-$3.1M
DARDEN RESTAURANTS INCDRI$618.0K3,0000.14%-0.01pp2qHELD
BERKSHIRE HATHAWAY INC DELBRKB$600.5K1,2000.13%-0.05pp24q-20.0%-$150.1K
CHEVRON CORPORATIONCVX$593.8K3,5820.13%-0.08pp31q-14.3%-$99.5K
JPMORGAN CHASE & COJPM$540.4K1,6510.12%-0.04pp5q-26.7%-$196.4K
CHIPOTLE MEXICAN GRILL INCCMG$530.3K15,5970.12%+0.06pp10q+120.0%+$289.2K
PRICE T ROWE GROUP INCTROW$392.2K3,4500.09%+0.01pp31qHELD
WD 40 COWDFC$365.5K1,5000.08%-0.02pp2q-25.0%-$121.8K
PAYCHEX INCPAYX$290.1K2,9500.06%flat31qHELD
CSX CORPCSX$270.9K5,7000.06%flat5qHELD
DNP SELECT INCOME FD INCDNP$254.7K23,6040.06%flat3qHELD
COCA COLA COKO$231.6K2,8500.05%flat2qHELD
DANAHER CORP DELDHR$210.7K1,1060.05%-1.15pp31q-95.7%-$4.6M
AUTOZONE INCAZO$207.7K650.05%-0.01pp8qHELD

By sector

Industry comes from the SIC code on each company's own SEC filings, which is self-reported and sometimes out of date. Derivative exposure is counted with the shares. Securities the SEC assigns no industry - funds, trusts, foreign issues - are shown as not classified rather than dropped.

Industrials 12.9%Semiconductors & Electronics 12.4%Retail & Consumer 11.9%Software & IT Services 10.2%Computer Hardware 6.4%Biotech & Pharma 5.9%Business Services 5.8%Autos & Aerospace 5.2%Insurance 5.0%Medical Devices 4.9%Instruments & Controls 4.8%Chemicals 3.6%Other sectors 10.6%Not classified 0.4%
 
SectorValueShare
Industrials$58.7M12.9%
Semiconductors & Electronics$56.7M12.4%
Retail & Consumer$54.4M11.9%
Software & IT Services$46.6M10.2%
Computer Hardware$29.1M6.4%
Biotech & Pharma$26.9M5.9%
Business Services$26.4M5.8%
Autos & Aerospace$23.9M5.2%
Insurance$22.6M5.0%
Medical Devices$22.5M4.9%
Instruments & Controls$21.8M4.8%
Chemicals$16.2M3.6%
Other sectors$48.4M10.6%
Not classified$1.7M0.4%

What the disclosed book did

This is not the fund's return. A 13F shows long US equity positions only, so shorts, bonds, foreign listings, private holdings and cash are all invisible here. What this measures is the quarter's change in value of the positions this manager disclosed, had they been left untouched - the return a reader following the filing would have earned.

QuarterBookMarket DifferencePriced
Q2 2026+15.6%+14.8%+0.8%100%
Q1 2026-5.3%-4.6%-0.7%100%
Q4 2025+2.2%+2.4%-0.1%100%
Q3 2025+2.1%+7.8%-5.7%100%
Q2 2025+6.2%+10.5%-4.2%100%
Q1 2025-1.4%-4.6%+3.1%100%
Q4 2024-1.9%+2.1%-4.1%100%
Q3 2024+8.1%+5.4%+2.7%100%

Market is SPY over the same two quarter ends, priced the same way as everything else here - the median across every filer reporting it. It is a large-cap US proxy, so a manager holding small caps or biotech will beat or trail it for reasons that are not skill. Prices are quarter-end to quarter-end and say nothing about the path in between, or about trades opened and closed inside a quarter.

Quarter by quarter

QuarterValuePositions NewAddedTrimmed ExitedTop 10 Days to file
Q2 2026$455.8M6732428937.4%7
Q1 2026$404.8M7383517433.1%10
Q4 2025$412.7M6952327834.4%9
Q3 2025$411.3M72035116730.4%17
Q2 2025$390.4M139702329128.1%10
Q1 2025$377.3M7021742528.1%57
Q4 2024$398.7M733946329.2%15
Q3 2024$423.6M7373020328.5%16
Q2 2024$382.2M6973413630.1%22
Q1 2024$356.8M68131236629.9%23
Q4 2023$362.1M6153612131.1%23
Q3 2023$298.0M5711928231.4%23
Q2 2023$322.5M5813876831.2%25
Q1 2023$286.9M125622531131.6%19
Q4 2022$241.1M6443018434.4%20
Q3 2022$195.9M6431047637.0%35
Q2 2022$239.4M6701048534.0%21
Q1 2022$309.7M721956931.7%28
Q4 2021$416.4M80650107633.6%31
Q3 2021$354.9M150763127533.5%29
Q2 2021$364.7M7992429832.2%30
Q1 2021$334.7M7872328231.0%37
Q4 2020$331.3M7362314234.0%36
Q3 2020$296.0M6941442433.5%27
Q2 2020$271.3M6972125532.2%35
Q1 2020$218.1M6722481130.9%41
Q4 2019$298.0M7624222028.3%35
Q3 2019$271.7M7452821227.8%24
Q2 2019$264.9M7123125527.4%15
Q1 2019$245.2M7463621128.5%23
Q4 2018$193.6M69000029.9%45

Rows marked UNVERIFIED ID, PLACEHOLDER ID, TICKER AS ID or NON-CUSIP ID carry an identifier that is not a valid CUSIP. They are shown because the filer reported that money, but treat the security named with caution - hover the chip for what is wrong with it, and see the methodology.

Held counts consecutive filings in which this manager reported the position, and can reach further back than the quarters listed above: the tabs begin at Q4 2018 because earlier coverage is too sparse to describe a market, but tenure is counted over every filing we hold, some reaching to 2007. A position sold and later rebought starts again from one.

Weight change is the shift in this position's share of the whole book, in percentage points. It is the more useful column: when money flows into or out of a broad fund, almost every holding is bought or sold at once, so added and trimmed largely track flows. A weight that rose while the book shrank is a decision. Both compare with the previous quarter this filer reported, not the previous calendar quarter.