2026 Q3 Portfolio Activity
In 2026 Q3, CARDEROCK CAPITAL MANAGEMENT INC maintained a portfolio of 73 distinct positions. The most significant new addition was AMAZON COM INC, now representing 0.44% of the total fund value. They heavily accumulated shares in MICROSOFT CORP, increasing the position by 9.2%. Conversely, CARDEROCK CAPITAL MANAGEMENT INC completely exited their position in WATSCO INC.
Position History
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Total Positions
73
Quarter
2026 Q3
Top Holding
LRCX (4.8%)
Top 10 Concentration
36.7%
Turnover Rate
23.4%
Sector HHI
0.18
Items per page:
Showing 1-50 of 73
CARDEROCK CAPITAL MANAGEMENT INC Full Holdings List — 2026 Q3
| Stock | History | Sector / Type | Port % | Prev % | Rank / Prev | Conviction | Change | % Change | Influence | Shares | Mkt Value | Avg Cost | Price Held | 1st Owned | Source | Source Date | Date Reported | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
LRCX
LAM RESEARCH CO...
|
Technology | 4.80% | 7.02% |
#1
Prev: #1
|
4.4 |
—
|
-10,158 | -13.8% |
P
S
|
63,639 | $20,906,048 | 2021 Q2 | 13F Filing | 2026-09-30 | 2026-10-22 | |||
|
GOOGL
ALPHABET INC
|
Communication Services | 4.45% | 4.43% |
#2
Prev: #2
|
3.8 |
—
|
-153 | -0.3% |
P
S
|
56,333 | $19,383,059 | 2015 Q4 | 13F Filing | 2026-09-30 | 2026-10-22 | |||
|
AAPL
APPLE INC
|
Technology | 3.90% | 3.30% |
#3
2
Prev: #5
|
3.1 |
—
|
-946 | -1.8% |
P
S
|
50,963 | $16,971,751 | 2009 Q1 | 13F Filing | 2026-09-30 | 2026-10-22 | |||
|
APH
AMPHENOL CORP
|
Technology | 3.86% | 4.12% |
#4
1
Prev: #3
|
5.0 |
—
|
92,888 | 87.2% |
P
S
|
199,463 | $16,814,731 | 2007 Q3 | 13F Filing | 2026-09-30 | 2026-10-22 | |||
|
MSFT
MICROSOFT CORP
|
Technology | 3.53% | 2.25% |
#5
11
Prev: #16
|
3.9 |
—
|
2,521 | 9.2% |
P
S
|
29,956 | $15,364,432 | 2001 Q4 | 13F Filing | 2026-09-30 | 2026-10-22 | |||
|
LLY
ELI LILLY & CO
|
Healthcare | 3.37% | 3.37% |
#6
2
Prev: #4
|
1.8 |
—
|
-139 | -1.1% |
P
S
|
12,679 | $14,670,617 | 2023 Q1 | 13F Filing | 2026-09-30 | 2026-10-22 | |||
|
FTNT
FORTINET INC
|
Technology | 3.34% | 3.08% |
#7
2
Prev: #9
|
1.8 |
—
|
-10,159 | -11.1% |
P
S
|
81,241 | $14,522,641 | 2020 Q4 | 13F Filing | 2026-09-30 | 2026-10-22 | |||
|
TMO
THERMO FISHER S...
|
Healthcare | 3.32% | 2.29% |
#8
7
Prev: #15
|
1.8 |
—
|
529 | 2.5% |
P
S
|
21,389 | $14,438,644 | 2008 Q3 | 13F Filing | 2026-09-30 | 2026-10-22 | |||
|
MA
MASTERCARD INCO...
|
Financial Services | 3.26% | 2.74% |
#9
1
Prev: #10
|
3.3 |
—
|
1,367 | 5.6% |
P
S
|
25,724 | $14,186,014 | 2011 Q4 | 13F Filing | 2026-09-30 | 2026-10-22 | |||
|
NVDA
NVIDIA CORPORAT...
|
Technology | 2.90% | 2.48% |
#10
2
Prev: #12
|
1.7 |
—
|
-1,197 | -2.1% |
P
S
|
55,347 | $12,640,165 | 2024 Q2 | 13F Filing | 2026-09-30 | 2026-10-22 | |||
|
MPWR
MONOLITHIC PWR ...
|
Technology | 2.80% | 3.12% |
#11
4
Prev: #7
|
1.6 |
—
|
-1,247 | -12.1% |
P
S
|
9,054 | $12,197,730 | 2024 Q1 | 13F Filing | 2026-09-30 | 2026-10-22 | |||
|
HEI
HEICO CORP NEW
|
Industrials | 2.72% | 3.13% |
#12
6
Prev: #6
|
1.6 |
—
|
-1,008 | -2.5% |
P
S
|
39,073 | $11,846,152 | 2023 Q1 | 13F Filing | 2026-09-30 | 2026-10-22 | |||
|
AME
AMETEK INC
|
Industrials | 2.65% | 2.43% |
#13
Prev: #13
|
1.6 |
—
|
662 | 1.4% |
P
S
|
46,503 | $11,520,188 | 2006 Q4 | 13F Filing | 2026-09-30 | 2026-10-22 | |||
|
PWR
QUANTA SVCS INC
|
Industrials | 2.59% | 3.10% |
#14
6
Prev: #8
|
1.5 |
—
|
-2,095 | -10.7% |
P
S
|
17,526 | $11,260,630 | 2022 Q4 | 13F Filing | 2026-09-30 | 2026-10-22 | |||
|
MNST
MONSTER BEVERAG...
|
Consumer Defensive | 2.36% | 2.62% |
#15
4
Prev: #11
|
3.9 |
—
|
122,539 | 98.6% |
P
S
|
246,880 | $10,275,146 | 2024 Q2 | 13F Filing | 2026-09-30 | 2026-10-22 | |||
|
COST
COSTCO WHOLESAL...
|
Consumer Defensive | 2.26% | 2.22% |
#16
1
Prev: #17
|
1.4 |
—
|
9 | 0.1% |
P
S
|
10,830 | $9,858,982 | 2014 Q1 | 13F Filing | 2026-09-30 | 2026-10-22 | |||
|
PH
PARKER-HANNIFIN...
|
Industrials | 2.20% | 2.38% |
#17
3
Prev: #14
|
1.4 |
—
|
-1,092 | -9.8% |
P
S
|
10,020 | $9,573,308 | 2008 Q2 | 13F Filing | 2026-09-30 | 2026-10-22 | |||
|
MSI
MOTOROLA SOLUTI...
|
Technology | 2.03% | 1.74% |
#18
8
Prev: #26
|
1.3 |
—
|
750 | 3.9% |
P
S
|
19,819 | $8,838,679 | 2021 Q3 | 13F Filing | 2026-09-30 | 2026-10-22 | |||
|
CTAS
CINTAS CORP
|
Industrials | 1.99% | 1.64% |
#19
9
Prev: #28
|
1.3 |
—
|
525 | 1.2% |
P
S
|
44,495 | $8,679,195 | 2001 Q4 | 13F Filing | 2026-09-30 | 2026-10-22 | |||
|
IDXX
IDEXX LABS INC
|
Healthcare | 1.99% | 1.92% |
#20
2
Prev: #22
|
1.3 |
—
|
-18 | -0.1% |
P
S
|
16,609 | $8,673,054 | 2002 Q1 | 13F Filing | 2026-09-30 | 2026-10-22 | |||
|
ORLY
OREILLY AUTOMOT...
|
Consumer Cyclical | 1.97% | 2.04% |
#21
Prev: #21
|
1.3 |
—
|
-669 | -0.7% |
P
S
|
100,424 | $8,577,214 | 2010 Q4 | 13F Filing | 2026-09-30 | 2026-10-22 | |||
|
FSS
FEDERAL SIGNAL ...
|
Industrials | 1.94% | 2.11% |
#22
4
Prev: #18
|
1.3 |
—
|
1,377 | 1.8% |
P
S
|
76,151 | $8,436,769 | 2025 Q4 | 13F Filing | 2026-09-30 | 2026-10-22 | |||
|
STE
STERIS PLC
|
Healthcare | 1.92% | 1.85% |
#23
1
Prev: #24
|
1.3 |
—
|
-324 | -0.8% |
P
S
|
39,766 | $8,351,258 | 2023 Q4 | 13F Filing | 2026-09-30 | 2026-10-22 | |||
|
SHW
SHERWIN WILLIAM...
|
Basic Materials | 1.86% | 1.92% |
#24
1
Prev: #23
|
1.2 |
—
|
-368 | -1.4% |
P
S
|
25,030 | $8,091,448 | 2017 Q1 | 13F Filing | 2026-09-30 | 2026-10-22 | |||
|
CDNS
CADENCE DESIGN ...
|
Technology | 1.80% | 2.05% |
#25
5
Prev: #20
|
1.2 |
—
|
-1,168 | -4.7% |
P
S
|
23,731 | $7,835,621 | 2020 Q4 | 13F Filing | 2026-09-30 | 2026-10-22 | |||
|
GWW
WW GRAINGER INC
|
Industrials | 1.77% | 2.05% |
#26
7
Prev: #19
|
1.2 |
—
|
-679 | -9.9% |
P
S
|
6,195 | $7,717,483 | 2001 Q4 | 13F Filing | 2026-09-30 | 2026-10-22 | |||
|
LIN
LINDE PLC
|
Basic Materials | 1.72% | 1.78% |
#27
2
Prev: #25
|
1.2 |
—
|
190 | 1.2% |
P
S
|
15,796 | $7,497,571 | 2025 Q2 | 13F Filing | 2026-09-30 | 2026-10-22 | |||
|
ACGL
ARCH CAP GROUP ...
|
Financial Services | 1.52% | 1.50% |
#28
4
Prev: #32
|
1.1 |
—
|
1,147 | 1.6% |
P
S
|
71,495 | $6,603,278 | 2023 Q1 | 13F Filing | 2026-09-30 | 2026-10-22 | |||
|
SPGI
S&P GLOBAL INC
|
Financial Services | 1.50% | 1.46% |
#29
5
Prev: #34
|
1.1 |
—
|
221 | 1.4% |
P
S
|
16,578 | $6,539,524 | 2020 Q2 | 13F Filing | 2026-09-30 | 2026-10-22 | |||
|
ITW
ILLINOIS TOOL W...
|
Industrials | 1.48% | 1.45% |
#30
5
Prev: #35
|
1.1 |
—
|
659 | 2.7% |
P
S
|
25,079 | $6,452,325 | 2001 Q4 | 13F Filing | 2026-09-30 | 2026-10-22 | |||
|
MCO
MOODYS CORP
|
Financial Services | 1.48% | 1.37% |
#31
5
Prev: #36
|
1.1 |
—
|
443 | 3.2% |
P
S
|
14,193 | $6,445,467 | 2006 Q4 | 13F Filing | 2026-09-30 | 2026-10-22 | |||
|
WAT
WATERS CORP
|
Healthcare | 1.45% | 0.61% |
#32
14
Prev: #46
|
3.6 |
—
|
6,987 | 94.2% |
P
S
|
14,404 | $6,328,974 | 2021 Q3 | 13F Filing | 2026-09-30 | 2026-10-22 | |||
|
ISRG
INTUITIVE SURGI...
|
Healthcare | 1.43% | 1.59% |
#33
4
Prev: #29
|
1.1 |
—
|
-2,905 | -16.0% |
P
S
|
15,302 | $6,222,252 | 2011 Q4 | 13F Filing | 2026-09-30 | 2026-10-22 | |||
|
APD
AIR PRODUCTS AN...
|
Basic Materials | 1.38% | 1.51% |
#34
3
Prev: #31
|
1.1 |
—
|
-1,847 | -7.9% |
P
S
|
21,658 | $6,025,905 | 2015 Q4 | 13F Filing | 2026-09-30 | 2026-10-22 | |||
|
ADP
AUTOMATIC DATA ...
|
Technology | 1.37% | 1.16% |
#35
4
Prev: #39
|
1.0 |
—
|
-469 | -2.0% |
P
S
|
23,177 | $5,981,057 | 2001 Q4 | 13F Filing | 2026-09-30 | 2026-10-22 | |||
|
SYK
STRYKER CORPORA...
|
Healthcare | 1.36% | 1.50% |
#36
3
Prev: #33
|
1.0 |
—
|
-179 | -0.8% |
P
S
|
21,463 | $5,910,696 | 2001 Q4 | 13F Filing | 2026-09-30 | 2026-10-22 | |||
|
AON
AON PLC
|
Financial Services | 1.33% | 1.71% |
#37
10
Prev: #27
|
1.0 |
—
|
-2,663 | -11.3% |
P
S
|
20,896 | $5,783,386 | 2015 Q2 | 13F Filing | 2026-09-30 | 2026-10-22 | |||
|
WCN
WASTE CONNECTIO...
|
Industrials | 1.25% | 1.28% |
#38
1
Prev: #37
|
1.0 |
—
|
447 | 1.3% |
P
S
|
35,474 | $5,460,513 | 2020 Q2 | 13F Filing | 2026-09-30 | 2026-10-22 | |||
|
IR
INGERSOLL RAND ...
|
Industrials | 1.17% | 1.17% |
#39
1
Prev: #38
|
1.0 |
—
|
2,341 | 3.6% |
P
S
|
67,564 | $5,074,732 | 2023 Q2 | 13F Filing | 2026-09-30 | 2026-10-22 | |||
|
ETN
EATON CORP PLC
|
Industrials | 1.11% | 0.86% |
#40
4
Prev: #44
|
2.9 |
—
|
2,037 | 22.2% |
P
S
|
11,197 | $4,811,463 | 2021 Q3 | 13F Filing | 2026-09-30 | 2026-10-22 | |||
|
AJG
GALLAGHER ARTHU...
|
Financial Services | 1.10% | 0.82% |
#41
4
Prev: #45
|
2.9 |
—
|
4,617 | 28.3% |
P
S
|
20,947 | $4,778,220 | 2013 Q1 | 13F Filing | 2026-09-30 | 2026-10-22 | |||
|
WMT
WALMART INC
|
Consumer Defensive | 1.05% | 1.11% |
#42
1
Prev: #41
|
0.9 |
—
|
-749 | -1.7% |
P
S
|
44,088 | $4,581,625 | 2001 Q4 | 13F Filing | 2026-09-30 | 2026-10-22 | |||
|
TJX
TJX COS INC NEW
|
Consumer Cyclical | 0.89% | 1.15% |
#43
3
Prev: #40
|
0.9 |
—
|
-5,251 | -15.2% |
P
S
|
29,235 | $3,868,083 | 2025 Q4 | 13F Filing | 2026-09-30 | 2026-10-22 | |||
|
INTC
INTEL CORP
|
Technology | 0.88% | 0.98% |
#44
1
Prev: #43
|
1.4 |
—
|
no change | no change |
P
S
|
32,000 | $3,847,360 | 2001 Q4 | 13F Filing | 2026-09-30 | 2026-10-22 | |||
|
HD
HOME DEPOT INC
|
Consumer Cyclical | 0.76% | 1.55% |
#45
15
Prev: #30
|
0.3 |
—
|
-8,453 | -42.2% |
P
S
|
11,579 | $3,294,110 | 2001 Q4 | 13F Filing | 2026-09-30 | 2026-10-22 | |||
|
BRK/A
BERKSHIRE HATHA...
|
Financial Services | 0.51% | 0.49% |
#46
1
Prev: #47
|
1.2 |
—
|
no change | no change |
P
S
|
3 | $2,241,015 | 2026 Q1 | 13F Filing | 2026-09-30 | 2026-10-22 | |||
|
AMZN
AMAZON COM INC
|
Consumer Cyclical | 0.44% | — |
#47
Prev: #—
|
3.7 |
—
|
7,652 | — |
NEW
|
7,652 | $1,906,496 | 2019 Q3 | 13F Filing | 2026-09-30 | 2026-10-22 | |||
|
L
LOEWS CORP
|
Financial Services | 0.29% | 0.30% |
#48
Prev: #48
|
1.1 |
—
|
no change | no change |
P
S
|
12,000 | $1,253,160 | 2026 Q1 | 13F Filing | 2026-09-30 | 2026-10-22 | |||
|
XOM
EXXONMOBIL HOLD...
|
Energy | 0.27% | 0.22% |
#49
Prev: #49
|
0.6 |
—
|
-50 | -0.7% |
P
S
|
7,183 | $1,169,033 | 2001 Q4 | 13F Filing | 2026-09-30 | 2026-10-22 | |||
|
BR
BROADRIDGE FINL...
|
Technology | 0.26% | — |
#50
Prev: #—
|
3.6 |
—
|
6,928 | — |
NEW
|
6,928 | $1,116,101 | 2026 Q3 | 13F Filing | 2026-09-30 | 2026-10-22 |
Showing 1-50 of 73 holdings