Q3 2026 13F · SEC CIK 1308016

Grandfield & Dodd, LLC

Wealth managerFiled 2026-10-29 for Q3 2026. Open the filing ↗ · All SEC filings ↗

Reported 13F value: $1.9B
Reported positions: 216
Top holdings a year, 3 yrs: +14.9%
Assets under management: $2.2B

Grandfield & Dodd, LLC is a wealth manager that reported 216 positions worth $1.9B in its Q3 2026 13F, filed 2026-10-29. Its largest holdings were Applied Matls Inc (AMAT, 6.6%), Microsoft Corp (MSFT, 6.2%), Analog Devices Inc (ADI, 4.8%). A portfolio copying its top holdings returned 14.9% a year over the last 3 years, against 20.4% for the S&P 500.

Grandfield & Dodd, LLC holdings largest 50 of 216 positions.

Weights are shares of the filer's total reported 13F value, compared with Q2 2026. Share changes may reflect splits; weight changes also reflect price moves. A 13F shows long US-listed positions only, up to 135 days after the fact.

Grandfield & Dodd, LLC 13F holdings
Stock	% of 13F value	Q2 2026	Shares	Share change	Reported value
AMATApplied Matls Inc	6.6%	9.4%	241,627	-2.6%	$123.6M
MSFTMicrosoft Corp	6.2%	4.4%	225,063	+0.4%	$115.4M
ADIAnalog Devices Inc	4.8%	4.8%	227,490	-1.7%	$90.2M
GEGe Aerospace	3.7%	4.5%	222,828	-2.1%	$69.6M
JCIJohnson Controls Internation	3.3%	3.3%	414,631	-4.3%	$61.6M
RTXRtx Corporation	3.2%	3.3%	327,976	-1.0%	$60.9M
CACICaci Intl Inc	2.8%	2.1%	87,402	+0.6%	$53.2M
LINLinde PLC	2.7%	2.9%	106,679	+0.2%	$50.6M
BRK-BBerkshire Hathaway Inc Del	2.7%	2.6%	100,929	+0.8%	$50.3M
CBChubb Limited	2.5%	2.6%	143,353	-0.1%	$46.6M
GOOGLAlphabet Inc	2.2%	2.3%	121,365	-0.8%	$41.8M
ITWIllinois Tool Wks Inc	2.2%	2.3%	162,034	+0.5%	$41.7M
PAYXPaychex Inc	2.2%	2.1%	420,273	+0.8%	$41.4M
SNPSSynopsys Inc	1.7%	1.7%	74,648	+3.7%	$32.5M
AAPLApple Inc	1.7%	1.4%	96,629	+1.1%	$32.2M
ADSKAutodesk Inc	1.7%	1.5%	152,450	+3.5%	$31.9M
APDAir Products and Chemicals I	1.6%	1.7%	110,064	+0.6%	$30.6M
REGNRegeneron Pharmaceuticals	1.5%	1.2%	37,098	+1.3%	$28.1M
JNJJohnson & Johnson	1.5%	1.4%	105,751	-1.0%	$28.0M
HXLHexcel Corp New	1.5%	1.7%	330,077	+1.0%	$27.7M
SYKStryker Corporation	1.4%	1.6%	98,086	+0.8%	$27.0M
VRSKVerisk Analytics Inc	1.4%	1.4%	154,328	+2.8%	$25.9M
MRKMerck & Co Inc	1.3%	1.2%	170,824	-0.4%	$24.8M
ALBAlbemarle Corp	1.3%	1.6%	233,291	+0.5%	$24.7M
TDYTeledyne Technologies Inc	1.3%	1.4%	39,794	+1.1%	$24.1M
CVXChevron Corporation	1.3%	1.0%	116,426	-0.2%	$23.8M
DISDisney Walt Co	1.3%	1.1%	225,814	+1.1%	$23.7M
SHELShell PLC	1.2%	1.0%	244,727	-0.3%	$23.3M
GILDGilead Sciences Inc	1.2%	1.0%	152,837	-0.9%	$22.8M
TRMBTrimble Inc	1.2%	1.0%	398,551	+1.9%	$22.8M
GEHCGe Healthcare Technologies I	1.2%	1.1%	335,368	-0.6%	$21.9M
NVSNovartis AG	1.2%	1.3%	153,313	-0.1%	$21.9M
MTDMettler Toledo International	1.1%	0.9%	14,149	+3.0%	$21.4M
ULUnilever PLC	1.1%	1.1%	335,587	+0.6%	$20.4M
HRLHormel Foods Corp	1.1%	1.3%	995,031	-1.1%	$19.8M
PYPLPaypal Hldgs Inc	1.0%	0.9%	367,656	-4.0%	$19.3M
ROKRockwell Automation Inc	1.0%	1.1%	42,298	-1.7%	$18.4M
BABoeing Co	0.9%	0.8%	93,327	+30.9%	$17.4M
PGProcter & Gamble Co	0.9%	0.9%	119,359	-0.6%	$17.3M
PPGPpg Inds Inc	0.9%	1.0%	162,171	+2.6%	$16.9M
XOMExxonmobil Holdings Corp	0.9%	—	102,762	—	$16.7M
DVNDevon Energy Corp New	0.9%	0.8%	356,690	+0.7%	$16.4M
SNYNFSanofi SA	0.8%	0.9%	385,082	+0.1%	$15.9M
AZOAutozone Inc	0.8%	0.8%	5,222	+4.6%	$14.8M
AOSSmith A O Corp	0.8%	0.7%	253,455	+20.5%	$14.3M
VRTXVertex Pharmaceuticals Inc	0.7%	0.6%	25,689	+3.4%	$13.4M
TMOThermo Fisher Scientific Inc	0.7%	—	19,224	—	$13.0M
BRK-ABerkshire Hathaway Inc Del	0.7%	0.7%	17	+0.0%	$12.7M
WYWeyerhaeuser Company Com New REIT	0.6%	0.8%	631,188	+1.8%	$12.0M
LWLamb Weston Hldgs Inc	0.6%	0.7%	283,416	-3.9%	$11.8M

What Grandfield & Dodd, LLC bought and sold in Q3 2026, against Q2 2026.

New positions

Q2 2026's filing was too long to tell new positions apart.

Added to

BA Boeing Co+30.9% shares
AOS Smith A O Corp+20.5% shares

Reduced

No position shrank by more than 5%.

Left the top 50

XOM Exxon Mobil Corpwas 0.7%
GLW Corning Incwas 0.6%

Share counts compared with the Q2 2026 13F; a split also changes share counts. The latest filing lists more than 50 positions, so a position that left the top 50 may still be held.

How the holdings did against the S&P 500.

1 year: +18.0% /yr; S&P 500 +20.1%
3 years: +14.9% /yr; S&P 500 +20.4%
5 years: +6.9% /yr; S&P 500 +11.6%

A portfolio of the filer's 20 largest 13F positions, weighted by value, bought the trading day after each 13F was filed and held until the next one was: what copying this filer could have earned. 13Fs show long US-listed positions only, so this is an estimate of the stock picks, not the fund's reported returns.

Reported 13F value by quarter.

13F value by quarter
Quarter	13F value	Positions
Q3 2026	$1.9B	216
Q2 2026	$1.9B	217
Q1 2026	$1.8B	209
Q4 2025	$1.8B	207
Q3 2025	$1.8B	211
Q2 2025	$1.7B	212
Q1 2025	$1.6B	197
Q4 2024	$1.6B	202
Q3 2024	$1.7B	207
Q2 2024	$1.6B	200
Q1 2024	$1.6B	203
Q4 2023	$1.4B	195

Questions about Grandfield & Dodd, LLC's portfolio

What stocks does Grandfield & Dodd, LLC own?

Grandfield & Dodd, LLC's latest 13F, for Q3 2026 and filed Oct 29, 2026, lists 216 positions worth $1.9B. The largest are Applied Matls Inc (AMAT) at 6.6%, Microsoft Corp (MSFT) at 6.2%, Analog Devices Inc (ADI) at 4.8%, Ge Aerospace (GE) at 3.7% and Johnson Controls Internation (JCI) at 3.3%.

What did Grandfield & Dodd, LLC buy last quarter?

In Q3 2026, Grandfield & Dodd, LLC added Boeing Co (BA) (+30.9% shares) and Smith A O Corp (AOS) (+20.5% shares), compared with its Q2 2026 filing.

What did Grandfield & Dodd, LLC sell last quarter?

In Q3 2026, Grandfield & Dodd, LLC cut from its top 50 Exxon Mobil Corp (XOM) and cut from its top 50 Corning Inc (GLW), compared with its Q2 2026 filing.

How has Grandfield & Dodd, LLC's portfolio performed?

A portfolio copying Grandfield & Dodd, LLC's 20 largest 13F holdings each quarter, from the day each filing was public, returned +14.9% a year over the last 3 years, against +20.4% for the S&P 500. Over 1 year: +18.0% against +20.1%. Over 5 years: +6.9% a year against +11.6%.

When is Grandfield & Dodd, LLC's next 13F filing due?

13F filings are due 45 days after each quarter ends. Grandfield & Dodd, LLC's filing for the quarter ending Dec 31, 2026 is due by Feb 14, 2027; this page updates the day after it is published.

How much money does Grandfield & Dodd, LLC manage?

Grandfield & Dodd, LLC reported $2.2B of regulatory assets under management on its latest SEC Form ADV. Its 13F, which covers only US-listed stocks and options, totals $1.9B.