2026 Q3 Portfolio Activity
In 2026 Q3, Tandem Investment Advisors, Inc. maintained a portfolio of 74 distinct positions. The most significant new addition was ECOLAB INC COM, now representing 1.65% of the total fund value. They heavily accumulated shares in STERIS PLC SHS USD, increasing the position by 41.6%. Conversely, Tandem Investment Advisors, Inc. completely exited their position in BECTON DICKINSON & CO COM.
Position History
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Total Positions
74
Quarter
2026 Q3
Top Holding
MSFT (5.2%)
Top 10 Concentration
40.5%
Turnover Rate
23.4%
Sector HHI
0.18
Items per page:
Showing 1-50 of 74
Tandem Investment Advisors, 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 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
MSFT
MICROSOFT CORP ...
|
Technology | 5.25% | 4.36% |
#1
4
Prev: #5
|
4.6 |
—
|
-31,876 | -18.3% |
P
S
|
142,450 | $73,062,605 | 2016 Q4 | 13F Filing | 2026-09-30 | 2026-11-04 | |||
|
APH
AMPHENOL CORP N...
|
Technology | 5.19% | 6.17% |
#2
1
Prev: #1
|
6.6 |
—
|
334,863 | 64.1% |
P
S
|
857,090 | $72,252,687 | 2022 Q2 | 13F Filing | 2026-09-30 | 2026-11-04 | |||
|
RMD
RESMED INC COM
|
Healthcare | 4.30% | 4.31% |
#3
3
Prev: #6
|
3.2 |
—
|
-58,998 | -17.9% |
P
S
|
270,856 | $59,886,262 | 2016 Q4 | 13F Filing | 2026-09-30 | 2026-11-04 | |||
|
NEE
NEXTERA ENERGY ...
|
Utilities | 4.00% | 5.18% |
#4
2
Prev: #2
|
2.6 |
—
|
-146,695 | -16.7% |
P
S
|
734,320 | $55,617,397 | 2016 Q4 | 13F Filing | 2026-09-30 | 2026-11-04 | |||
|
TRNO
TERRENO RLTY CO...
|
Real Estate | 3.93% | 4.41% |
#5
1
Prev: #4
|
2.6 |
—
|
-170,025 | -16.7% |
P
S
|
847,031 | $54,675,851 | 2022 Q4 | 13F Filing | 2026-09-30 | 2026-11-04 | |||
|
N/A
STERIS PLC SHS ...
|
|
Unknown | 3.73% | 4.20% |
#6
1
Prev: #7
|
2.0 |
—
|
-50,273 | -16.9% |
P
S
|
247,553 | $51,988,606 | — | 13F Filing | 2026-09-30 | 2026-11-04 | ||
|
JKHY
JACK HENRY & AS...
|
Technology | 3.66% | 3.93% |
#7
1
Prev: #8
|
2.0 |
—
|
-70,751 | -16.6% |
P
S
|
355,258 | $50,887,156 | 2021 Q4 | 13F Filing | 2026-09-30 | 2026-11-04 | |||
|
ICE
INTERCONTINENTA...
|
Financial Services | 3.59% | 4.45% |
#8
5
Prev: #3
|
1.4 |
—
|
-210,515 | -39.0% |
P
S
|
328,840 | $49,993,545 | 2016 Q4 | 13F Filing | 2026-09-30 | 2026-11-04 | |||
|
SYK
STRYKER CORP CO...
|
Healthcare | 3.47% | 3.77% |
#9
1
Prev: #10
|
1.9 |
—
|
-3,437 | -1.9% |
P
S
|
175,490 | $48,328,191 | 2016 Q4 | 13F Filing | 2026-09-30 | 2026-11-04 | |||
|
ROP
ROPER TECHNOLOG...
|
Technology | 3.34% | 3.63% |
#10
1
Prev: #11
|
1.8 |
—
|
-26,913 | -16.8% |
P
S
|
133,090 | $46,502,977 | 2022 Q2 | 13F Filing | 2026-09-30 | 2026-11-04 | |||
|
BRO
BROWN & BROWN I...
|
Financial Services | 3.21% | 3.82% |
#11
2
Prev: #9
|
1.8 |
—
|
-154,988 | -17.4% |
P
S
|
734,661 | $44,740,855 | 2016 Q4 | 13F Filing | 2026-09-30 | 2026-11-04 | |||
|
CHD
CHURCH & DWIGHT...
|
Consumer Defensive | 3.10% | 3.57% |
#12
Prev: #12
|
1.7 |
—
|
-92,031 | -16.7% |
P
S
|
457,759 | $43,130,053 | 2022 Q2 | 13F Filing | 2026-09-30 | 2026-11-04 | |||
|
BLK
BLACKROCK INC C...
|
Financial Services | 2.98% | 3.07% |
#13
1
Prev: #14
|
1.7 |
—
|
-8,570 | -17.9% |
P
S
|
39,174 | $41,457,452 | 2020 Q1 | 13F Filing | 2026-09-30 | 2026-11-04 | |||
|
V
VISA INC ...
|
Financial Services | 2.85% | 3.11% |
#14
1
Prev: #13
|
1.6 |
—
|
-25,056 | -18.5% |
P
S
|
110,267 | $39,622,241 | 2020 Q3 | 13F Filing | 2026-09-30 | 2026-11-04 | |||
|
MA
MASTERCARD INC ...
|
Financial Services | 2.82% | 2.95% |
#15
Prev: #15
|
1.6 |
—
|
-14,588 | -17.0% |
P
S
|
71,238 | $39,285,620 | 2022 Q2 | 13F Filing | 2026-09-30 | 2026-11-04 | |||
|
ABT
ABBOTT LABORATO...
|
Healthcare | 2.79% | 2.90% |
#16
Prev: #16
|
1.6 |
—
|
-84,176 | -17.7% |
P
S
|
392,377 | $38,778,619 | 2016 Q4 | 13F Filing | 2026-09-30 | 2026-11-04 | |||
|
PG
PROCTER & GAMBL...
|
Consumer Defensive | 2.53% | 2.86% |
#17
Prev: #17
|
1.5 |
—
|
-48,753 | -16.7% |
P
S
|
242,729 | $35,263,669 | 2018 Q4 | 13F Filing | 2026-09-30 | 2026-11-04 | |||
|
RSG
REPUBLIC SVCS I...
|
Industrials | 2.39% | 2.74% |
#18
Prev: #18
|
1.5 |
—
|
-33,637 | -17.5% |
P
S
|
158,365 | $33,236,063 | 2016 Q4 | 13F Filing | 2026-09-30 | 2026-11-04 | |||
|
EXPD
EXPEDITORS INTL...
|
Industrials | 2.38% | 2.40% |
#19
2
Prev: #21
|
1.5 |
—
|
-40,226 | -18.3% |
P
S
|
179,785 | $33,195,502 | 2016 Q4 | 13F Filing | 2026-09-30 | 2026-11-04 | |||
|
WCN
WASTE CONNECTIO...
|
Industrials | 2.24% | 2.73% |
#20
1
Prev: #19
|
1.4 |
—
|
-41,937 | -17.2% |
P
S
|
202,161 | $31,118,643 | 2018 Q4 | 13F Filing | 2026-09-30 | 2026-11-04 | |||
|
JNJ
JOHNSON & JOHNS...
|
Healthcare | 2.11% | 2.32% |
#21
2
Prev: #23
|
1.3 |
—
|
-25,097 | -18.4% |
P
S
|
111,101 | $29,412,879 | 2017 Q2 | 13F Filing | 2026-09-30 | 2026-11-04 | |||
|
ZTS
ZOETIS INC CL A
|
Healthcare | 2.05% | 2.40% |
#22
Prev: #22
|
1.3 |
—
|
-88,624 | -17.8% |
P
S
|
409,471 | $28,593,360 | 2024 Q4 | 13F Filing | 2026-09-30 | 2026-11-04 | |||
|
BR
BROADRIDGE FINL...
|
Technology | 2.04% | 1.28% |
#23
8
Prev: #31
|
3.3 |
—
|
35,905 | 25.7% |
P
S
|
175,873 | $28,333,140 | 2025 Q4 | 13F Filing | 2026-09-30 | 2026-11-04 | |||
|
N/A
WEC ENERGY GROU...
|
|
Unknown | 1.99% | 1.37% |
#24
5
Prev: #29
|
3.8 |
—
|
100,141 | 57.3% |
P
S
|
275,001 | $27,714,601 | — | 13F Filing | 2026-09-30 | 2026-11-04 | ||
|
PEP
PEPSICO INC
|
Consumer Defensive | 1.95% | 1.75% |
#25
2
Prev: #27
|
2.8 |
—
|
21,153 | 11.0% |
P
S
|
214,311 | $27,157,490 | 2019 Q1 | 13F Filing | 2026-09-30 | 2026-11-04 | |||
|
MCD
MCDONALDS CORP ...
|
Consumer Cyclical | 1.89% | 2.49% |
#26
6
Prev: #20
|
1.3 |
—
|
-23,879 | -17.4% |
P
S
|
113,696 | $26,256,954 | 2018 Q4 | 13F Filing | 2026-09-30 | 2026-11-04 | |||
|
NDAQ
NASDAQ OMX GROU...
|
Financial Services | 1.88% | 1.20% |
#27
5
Prev: #32
|
3.3 |
—
|
58,092 | 25.6% |
P
S
|
284,802 | $26,204,632 | 2026 Q1 | 13F Filing | 2026-09-30 | 2026-11-04 | |||
|
COST
COSTCO WHOLESAL...
|
Consumer Defensive | 1.88% | 2.11% |
#28
4
Prev: #24
|
1.3 |
—
|
-4,926 | -14.6% |
P
S
|
28,750 | $26,172,275 | 2016 Q4 | 13F Filing | 2026-09-30 | 2026-11-04 | |||
|
INTU
INTUIT COM
|
Technology | 1.72% | 1.82% |
#29
4
Prev: #25
|
1.2 |
—
|
-17,226 | -16.5% |
P
S
|
86,936 | $23,969,125 | 2024 Q1 | 13F Filing | 2026-09-30 | 2026-11-04 | |||
|
ECL
ECOLAB INC COM
|
Basic Materials | 1.65% | — |
#30
Prev: #—
|
4.2 |
—
|
83,767 | — |
NEW
|
83,767 | $23,000,743 | 2016 Q4 | 13F Filing | 2026-09-30 | 2026-11-04 | |||
|
KNSL
KINSALE CAP GRO...
|
Financial Services | 1.59% | — |
#31
Prev: #—
|
4.1 |
—
|
68,383 | — |
NEW
|
68,383 | $22,070,613 | 2025 Q3 | 13F Filing | 2026-09-30 | 2026-11-04 | |||
|
VRSK
VERISK ANALYTIC...
|
Industrials | 1.48% | 1.76% |
#32
6
Prev: #26
|
1.1 |
—
|
-23,947 | -16.3% |
P
S
|
122,699 | $20,595,027 | 2017 Q2 | 13F Filing | 2026-09-30 | 2026-11-04 | |||
|
ROL
ROLLINS INC COM
|
Consumer Cyclical | 1.46% | 1.72% |
#33
5
Prev: #28
|
2.6 |
—
|
60,228 | 9.8% |
P
S
|
676,017 | $20,361,632 | 2026 Q2 | 13F Filing | 2026-09-30 | 2026-11-04 | |||
|
CTAS
CINTAS CORP COM
|
Industrials | 1.38% | 1.34% |
#34
4
Prev: #30
|
1.1 |
—
|
-19,335 | -16.4% |
P
S
|
98,503 | $19,213,995 | 2024 Q3 | 13F Filing | 2026-09-30 | 2026-11-04 | |||
|
ATO
ATMOS ENERGY CO...
|
Utilities | 1.26% | — |
#35
Prev: #—
|
4.0 |
—
|
112,214 | — |
NEW
|
112,214 | $17,554,758 | 2026 Q3 | 13F Filing | 2026-09-30 | 2026-11-04 | |||
|
MSI
MOTOROLA SOLUTI...
|
Technology | 1.26% | — |
#36
Prev: #—
|
4.0 |
—
|
39,192 | — |
NEW
|
39,192 | $17,478,456 | 2026 Q3 | 13F Filing | 2026-09-30 | 2026-11-04 | |||
|
EGP
EASTGROUP PROPE...
|
Real Estate | 1.20% | — |
#37
Prev: #—
|
4.0 |
—
|
84,713 | — |
NEW
|
84,713 | $16,726,582 | 2026 Q3 | 13F Filing | 2026-09-30 | 2026-11-04 | |||
|
TJX
TJX COS INC NEW...
|
Consumer Cyclical | 0.78% | 0.06% |
#38
9
Prev: #47
|
3.3 |
—
|
77,042 | 1407.2% |
P
S
|
82,517 | $10,917,824 | 2016 Q4 | 13F Filing | 2026-09-30 | 2026-11-04 | |||
|
MEDP
MEDPACE HLDGS I...
|
Healthcare | 0.35% | 0.33% |
#39
5
Prev: #34
|
0.6 |
—
|
-1,532 | -16.4% |
P
S
|
7,826 | $4,884,833 | 2025 Q1 | 13F Filing | 2026-09-30 | 2026-11-04 | |||
|
QLYS
QUALYS INC COM
|
Technology | 0.33% | 0.27% |
#40
3
Prev: #37
|
0.6 |
—
|
-4,838 | -16.6% |
P
S
|
24,350 | $4,558,320 | 2021 Q4 | 13F Filing | 2026-09-30 | 2026-11-04 | |||
|
FTNT
FORTINET INC CO...
|
Technology | 0.32% | 0.31% |
#41
6
Prev: #35
|
0.6 |
—
|
-5,090 | -17.0% |
P
S
|
24,768 | $4,427,528 | 2025 Q3 | 13F Filing | 2026-09-30 | 2026-11-04 | |||
|
IDXX
IDEXX LABS INC ...
|
Healthcare | 0.28% | 0.30% |
#42
6
Prev: #36
|
0.6 |
—
|
-1,005 | -12.0% |
P
S
|
7,384 | $3,855,851 | 2024 Q4 | 13F Filing | 2026-09-30 | 2026-11-04 | |||
|
ORLY
O REILLY AUTOMO...
|
Consumer Cyclical | 0.20% | 0.23% |
#43
5
Prev: #38
|
0.6 |
—
|
-3,815 | -10.4% |
P
S
|
32,772 | $2,799,057 | 2016 Q4 | 13F Filing | 2026-09-30 | 2026-11-04 | |||
|
ISRG
INTUITIVE SURGI...
|
Healthcare | 0.19% | 0.21% |
#44
5
Prev: #39
|
0.6 |
—
|
-1,246 | -16.0% |
P
S
|
6,547 | $2,662,207 | 2022 Q2 | 13F Filing | 2026-09-30 | 2026-11-04 | |||
|
TYL
TYLER TECHNOLOG...
|
Technology | 0.17% | 0.14% |
#45
4
Prev: #41
|
0.6 |
—
|
221 | 3.0% |
P
S
|
7,467 | $2,378,986 | 2018 Q4 | 13F Filing | 2026-09-30 | 2026-11-04 | |||
|
AKAM
AKAMAI TECHNOLO...
|
Technology | 0.13% | 0.16% |
#46
6
Prev: #40
|
0.6 |
—
|
-3,174 | -15.3% |
P
S
|
17,558 | $1,867,293 | 2022 Q2 | 13F Filing | 2026-09-30 | 2026-11-04 | |||
|
SNPS
SYNOPSYS INC CO...
|
Technology | 0.11% | 0.13% |
#47
5
Prev: #42
|
0.5 |
—
|
-739 | -17.3% |
P
S
|
3,532 | $1,536,208 | 2025 Q3 | 13F Filing | 2026-09-30 | 2026-11-04 | |||
|
ABBV
ABBVIE INC COM
|
Healthcare | 0.08% | 0.12% |
#48
5
Prev: #43
|
0.0 |
—
|
-2,710 | -39.1% |
P
S
|
4,223 | $1,104,695 | 2016 Q4 | 13F Filing | 2026-09-30 | 2026-11-04 | |||
|
MNST
MONSTER BEVERAG...
|
Consumer Defensive | 0.07% | 0.10% |
#49
5
Prev: #44
|
3.0 |
—
|
10,009 | 66.8% |
P
S
|
24,988 | $1,040,001 | 2026 Q2 | 13F Filing | 2026-09-30 | 2026-11-04 | |||
|
ADBE
ADOBE SYS INC C...
|
Technology | 0.07% | 0.07% |
#50
5
Prev: #45
|
0.0 |
—
|
-1,117 | -21.7% |
P
S
|
4,029 | $966,718 | 2020 Q4 | 13F Filing | 2026-09-30 | 2026-11-04 |
Showing 1-50 of 74 holdings