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GRANDFIELD & DODD, LLC — 13F Holdings & Portfolio

CIK 1308016 · latest 13F-HR filed 2026-10-29

Backtest portfolio

GRANDFIELD & DODD, LLC manages $1.87B in 13F-reported U.S. long-equity assets across 216 reported positions as of its 2026-09-30 13F-HR filing. Its largest disclosed positions are AMAT (6.59%), MSFT (6.16%), ADI (4.81%). Quarter over quarter (versus its 2026-06-30 filing) the fund opened 7 new positions and exited 8; 59 existing positions rose in reported value and 83 fell.

AUM is the long-equity portion reported on Form 13F-HR. Excludes short positions, cash, foreign holdings, and non-13F assets. For informational purposes only — not investment advice.

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AUM
$1.87B

Long-equity book

Holdings
216

Distinct positions

Period
2026-09-30

Filed 2026-10-29

Q/Q Activity
+7 / −8 / ↑59 / ↓83

vs 2026-06-30

Portfolio charts

Latest quarter's book, what changed, and how the portfolio has evolved across filings.

Portfolio map

Q3 26
AMAT6.6% · -3%MSFT6.2% · +0%ADI4.8% · -2%GE3.7% · -2%JCI3.3% · -4%RTX3.2% · -1%CACI2.8% · +1%LIN2.7% · +0%BRK.B2.7% · +1%CB2.5% · -0%GOOGL2.2% · -1%ITW2.2% · +0%PAYX2.2% · +1%SNPS1.7% · +4%AAPL1.7% · +1%ADSK1.7% · +4%APD1.6% · +1%REGN1.5% · +1%JNJ1.5% · -1%HXL1.5% · +1%SYK1.4% · +1%VRSK1.4% · +3%MRK1.3% · -0%ALB1.3% · +0%TDY1.3% · +1%CVX1.3% · -0%DIS1.3% · +1%SHEL1.2% · -0%GILD1.2% · -1%TRMB1.2% · +2%GEHC1.2% · -1%NVS1.2% · -0%MTD1.1% · +3%UL1.1% · +1%HRL1.1% · -1%PYPL1.0% · -4%ROK1.0% · -2%BA0.9% · +31%PG0.9% · -1%PPG0.9% · +3%XOM0.9% · -0%DVN0.9% · +1%SNY0.8% · +0%AZO0.8% · +5%AOS0.8% · +20%VRTX0.7% · +3%TMO0.7% · -1%BRK.A0.7% · 0%WY0.6% · +2%LW0.6% · -4%CTSH0.5% · +2%GOOG0.5% · -1%DEO0.5% · -23%ECL0.4% · +2%GLW0.4% · +6%JPM0.4% · -3%MDT0.3% · -5%MA0.3% · +2%COP0.3% · +2%GEV0.3% · +8%

Box size = position value; colour = change in share count vs the prior quarter (green added, red trimmed, blue new). Rows split across managers or share classes are combined. Click a box for the stock.

Sector mix

% of 13F value

Sectors from each company's SIC code; funds and ETFs grouped separately.

Biggest buys and sells

Q2 26 → Q3 26

Estimated from the change in shares held × the quarter-end price, so price moves alone don't count as buying. New and exited positions are included.

13F assets and positions

4 quarters

Total reported 13F value (bars) and number of positions (line) each quarter. Value changes include market moves.

Top positions over time

reported value

The eight largest current positions, valued at each quarter end.

Concentration

top 10 = 38.5%

Cumulative share of the portfolio held in the largest N positions.

Firm Profile & Key People

As of the firm’s regulatory filing dated Mar 13, 2026.

Assets Under Management
$2.21B
Discretionary
$2.21B
Employees
16
Accounts
1,763
Address
28 LIBERTY STREET
SUITE 5901
NEW YORK, NY 10005
Phone
(212) 477-9626
Website
Name Title / Status Ownership Type
CHO, TAE-GENE, KIM ControlMEMBER, CHIEF COMPLIANCE OFFICER
since Jan 2005
25–50%Individual
GRANDFIELD, CHERYL, LEE ControlMEMBER
since Jan 2001
25–50%Individual
MACDONAGH, JEFFREY, THOMAS STENSVEN ControlMEMBER
since Jan 2011
25–50%Individual
Netcher, ANDREA, Sharkey ControlMEMBER
since Jan 2019
25–50%Individual
Ownership & leadership changes · 5 filings with changes since Feb 10, 2012

From the firm’s regulatory filings, newest first. Dates are filing dates: a filing that no longer lists someone does not say when they left.

Nov 1, 2023 filing
  • No longer listedMCKENNA, BONNIE, CHRISTINE · MEMBER · 10–25% · control person · listed since Jan 2007
  • ChangedCHO, TAE-GENE, KIM · ownership 10–25% → 25–50%
  • ChangedGRANDFIELD, CHERYL, LEE · ownership 10–25% → 25–50%
  • ChangedMACDONAGH, JEFFREY, THOMAS STENSVEN · ownership 10–25% → 25–50%
  • ChangedNetcher, ANDREA, Sharkey · ownership 10–25% → 25–50%
Dec 20, 2019 filing
  • No longer listedDODD, RICHARD, WALLACE · MEMBER · 10–25% · control person · listed since Jan 2001
Jan 9, 2019 filing
  • AddedNetcher, ANDREA, Sharkey · MEMBER · 10–25% · control person
Mar 13, 2015 filing
  • No longer listedSPIEGEL, ERIC, PAUL · CHIEF FINANCIAL OFFICER · Less than 5% · control person · listed since Apr 2013
May 16, 2013 filing
  • AddedSPIEGEL, ERIC, PAUL · CHIEF FINANCIAL OFFICER · Less than 5% · control person
Feb 10, 2012 filing (earliest on record)
  • ListedCHO, TAE-GENE, KIM · MEMBER, CHIEF COMPLIANCE OFFICER · 10–25% · control person
  • ListedDODD, RICHARD, WALLACE · MEMBER · 10–25% · control person
  • ListedGRANDFIELD, CHERYL, LEE · MEMBER · 10–25% · control person
  • ListedMACDONAGH, JEFFREY, THOMAS STENSVEN · MEMBER · 10–25% · control person
  • ListedMCKENNA, BONNIE, CHRISTINE · MEMBER · 10–25% · control person

Quarter-over-quarter changes

Changes in reported position value vs the prior 13F, so price moves count too, not just shares bought or sold.

Top Adds (vs prior quarter)

Show all 59 →

Top Trims

Show all 83 →

New Positions

Show all 7 →

Exited Positions

Show all 8 →

GRANDFIELD & DODD, LLC Holdings (2026-09-30)

Rows tagged Call or Put are options positions, not stock. Per SEC Form 13F-HR, Value shows the notional value of the underlying (shares covered × underlying price), not the option premium. Shares is the number of underlying shares covered (divide by 100 for contract count).

# Issuer Symbol CUSIP Value Weight Shares Type
1 APPLIED MATLS INC AMAT 038222105 $123.6M 6.59% 241,627 SH
2 MICROSOFT CORP MSFT 594918104 $115.4M 6.16% 225,063 SH
3 ANALOG DEVICES INC ADI 032654105 $90.2M 4.81% 227,490 SH
4 GE AEROSPACE GE 369604301 $69.6M 3.71% 222,828 SH
5 JOHNSON CONTROLS INTERNATION JCI G51502105 $61.6M 3.29% 414,631 SH
6 RTX CORPORATION RTX 75513E101 $60.9M 3.25% 327,976 SH
7 CACI INTL INC CACI 127190304 $53.2M 2.84% 87,402 SH
8 LINDE PLC LIN G54950103 $50.6M 2.70% 106,679 SH
9 BERKSHIRE HATHAWAY INC DEL BRK.B 084670702 $50.3M 2.68% 100,929 SH
10 CHUBB LIMITED CB H1467J104 $46.6M 2.49% 143,353 SH
11 ALPHABET INC GOOGL 02079K305 $41.8M 2.23% 121,365 SH
12 ILLINOIS TOOL WKS INC ITW 452308109 $41.7M 2.22% 162,034 SH
13 PAYCHEX INC PAYX 704326107 $41.4M 2.21% 420,273 SH
14 SYNOPSYS INC SNPS 871607107 $32.5M 1.73% 74,648 SH
15 APPLE INC AAPL 037833100 $32.2M 1.72% 96,629 SH
16 AUTODESK INC ADSK 052769106 $31.9M 1.70% 152,450 SH
17 AIR PRODUCTS AND CHEMICALS I APD 009158106 $30.6M 1.63% 110,064 SH
18 REGENERON PHARMACEUTICALS REGN 75886F107 $28.1M 1.50% 37,098 SH
19 JOHNSON & JOHNSON JNJ 478160104 $28.0M 1.49% 105,751 SH
20 HEXCEL CORP NEW HXL 428291108 $27.7M 1.48% 330,077 SH
21 STRYKER CORPORATION SYK 863667101 $27.0M 1.44% 98,086 SH
22 VERISK ANALYTICS INC VRSK 92345Y106 $25.9M 1.38% 154,328 SH
23 MERCK & CO INC MRK 58933Y105 $24.8M 1.32% 170,824 SH
24 ALBEMARLE CORP ALB 012653101 $24.7M 1.32% 233,291 SH
25 TELEDYNE TECHNOLOGIES INC TDY 879360105 $24.1M 1.29% 39,794 SH
26 CHEVRON CORPORATION CVX 166764100 $23.8M 1.27% 116,426 SH
27 DISNEY WALT CO DIS 254687106 $23.7M 1.26% 225,814 SH
28 SHELL PLC SHEL 780259305 $23.3M 1.24% 244,727 SH
29 GILEAD SCIENCES INC GILD 375558103 $22.8M 1.22% 152,837 SH
30 TRIMBLE INC TRMB 896239100 $22.8M 1.21% 398,551 SH
31 GE HEALTHCARE TECHNOLOGIES I GEHC 36266G107 $21.9M 1.17% 335,368 SH
32 NOVARTIS AG NVS 66987V109 $21.9M 1.17% 153,313 SH
33 METTLER TOLEDO INTERNATIONAL MTD 592688105 $21.4M 1.14% 14,149 SH
34 UNILEVER PLC UL 904767803 $20.4M 1.09% 335,587 SH
35 HORMEL FOODS CORP HRL 440452100 $19.8M 1.06% 995,031 SH
36 PAYPAL HLDGS INC PYPL 70450Y103 $19.3M 1.03% 367,656 SH
37 ROCKWELL AUTOMATION INC ROK 773903109 $18.4M 0.98% 42,298 SH
38 BOEING CO BA 097023105 $17.4M 0.93% 93,327 SH
39 PROCTER & GAMBLE CO PG 742718109 $17.3M 0.92% 119,359 SH
40 PPG INDS INC PPG 693506107 $16.9M 0.90% 162,171 SH
41 EXXONMOBIL HOLDINGS CORP XOM 30233Q108 $16.7M 0.89% 102,762 SH
42 DEVON ENERGY CORP NEW DVN 25179M103 $16.4M 0.88% 356,690 SH
43 SANOFI SA SNY 80105N105 $15.9M 0.85% 385,082 SH
44 AUTOZONE INC AZO 053332102 $14.8M 0.79% 5,222 SH
45 SMITH A O CORP AOS 831865209 $14.3M 0.76% 253,455 SH
46 VERTEX PHARMACEUTICALS INC VRTX 92532F100 $13.4M 0.72% 25,689 SH
47 THERMO FISHER SCIENTIFIC INC TMO 883556102 $13.0M 0.69% 19,224 SH
48 BERKSHIRE HATHAWAY INC DEL BRK.A 084670108 $12.7M 0.68% 17 SH
49 WEYERHAEUSER CO WY 962166104 $12.0M 0.64% 631,188 SH
50 LAMB WESTON HLDGS INC LW 513272104 $11.8M 0.63% 283,416 SH
Filing History
Period Filed AUM Holdings Accession
2026-09-30 2026-10-29 $1.87B 216 0001308016-26-000006
2026-06-30 2026-08-07 $1.91B 217 0001308016-26-000004
2026-03-31 2026-05-07 $1.77B 209 0001308016-26-000002
2025-12-31 2026-02-10 $1.77B 207 0001308016-26-000001
Filer Information
Address
28 LIBERTY STREET, SUITE 5901
NEW YORK, NY 10005
Phone
(212) 477-9626
Filing Manager
GRANDFIELD & DODD, LLC
NEW YORK, NY
Signatory
Tae-Gene K. Cho
Principal & Chief Compliance Officer