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Super Investors GRANDFIELD & DODD, LLC
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GRANDFIELD & DODD, LLC

Quarterly 13F snapshot: US-listed longs only, no performance figures — 13F data cannot support them.

Portfolio value
$1.87B
Positions
216
Quarter ended
September 30, 2026
Filed
October 29, 2026

Reported portfolio value by quarter (54 quarters reported)

$1.91B $528M
Q2 13 Q1 16 Q4 18 Q3 21 Q2 24 Q3 26

$528M in Q2 2013 → $1.87B now. Hover for any quarter.

Holdings

As reported for the quarter ended September 30, 2026. Activity is the change in share count since the prior quarter's filing.

Holding % of portfolio Activity Shares Value
AM Applied Matls Inc 6.6% Trimmed 2.6% 241,627 $124M
Microsoft Corp 6.2% Added 0.4% 225,063 $115M
Analog Devices Inc 4.8% Trimmed 1.7% 227,490 $90.2M
GA Ge Aerospace 3.7% Trimmed 2.1% 222,828 $69.6M
JC Johnson Controls Internation 3.3% Trimmed 4.3% 414,631 $61.6M
Rtx Corporation 3.2% Trimmed 1.0% 327,976 $60.9M
CI Caci Intl Inc 2.8% Added 0.6% 87,402 $53.2M
Linde PLC 2.7% Added 0.2% 106,679 $50.6M
BH Berkshire Hathaway Inc Del 2.7% Added 0.8% 100,929 $50.3M
Chubb Limited 2.5% Trimmed 0.1% 143,353 $46.6M
Alphabet Inc 2.2% Trimmed 0.8% 121,365 $41.8M
IT Illinois Tool Wks Inc 2.2% Added 0.5% 162,034 $41.7M
Paychex Inc 2.2% Added 0.8% 420,273 $41.4M
Synopsys Inc 1.7% Added 3.7% 74,648 $32.5M
Apple Inc 1.7% Added 1.1% 96,629 $32.2M
Autodesk Inc 1.7% Added 3.5% 152,450 $31.9M
AP Air Products And Chemicals I 1.6% Added 0.6% 110,064 $30.6M
Regeneron Pharmaceuticals 1.5% Added 1.3% 37,098 $28.1M
Johnson & Johnson 1.5% Trimmed 1.0% 105,751 $28M
HN Hexcel Corp New 1.5% Added 1.0% 330,077 $27.7M
Stryker Corporation 1.4% Added 0.8% 98,086 $27M
Verisk Analytics Inc 1.4% Added 2.8% 154,328 $25.9M
Merck & Co Inc 1.3% Trimmed 0.4% 170,824 $24.8M
Albemarle Corp 1.3% Added 0.5% 233,291 $24.7M
Teledyne Technologies Inc 1.3% Added 1.1% 39,794 $24.1M
Chevron Corporation 1.3% Trimmed 0.2% 116,426 $23.8M
DW Disney Walt Co 1.3% Added 1.1% 225,814 $23.7M
Shell PLC 1.2% Trimmed 0.3% 244,727 $23.3M
Gilead Sciences Inc 1.2% Trimmed 0.9% 152,837 $22.8M
Trimble Inc 1.2% Added 1.9% 398,551 $22.8M
GH Ge Healthcare Technologies I 1.2% Trimmed 0.6% 335,368 $21.9M
Novartis Ag 1.2% Trimmed 0.1% 153,313 $21.9M
Mettler Toledo International 1.1% Added 3.0% 14,149 $21.4M
Unilever PLC 1.1% Added 0.6% 335,587 $20.4M
Hormel Foods Corp 1.1% Trimmed 1.1% 995,031 $19.8M
PH Paypal Hldgs Inc 1.0% Trimmed 4.0% 367,656 $19.3M
Rockwell Automation Inc 1.0% Trimmed 1.7% 42,298 $18.4M
Boeing Co 0.9% Added 31% 93,327 $17.4M
Procter & Gamble Co 0.9% Trimmed 0.6% 119,359 $17.3M
PI Ppg Inds Inc 0.9% Added 2.6% 162,171 $16.9M
Exxonmobil Holdings Corp 0.9% New 102,762 $16.7M
DE Devon Energy Corp New 0.9% Added 0.7% 356,690 $16.4M
Sanofi Sa 0.8% Added 0.1% 385,082 $15.9M
Autozone Inc 0.8% Added 4.6% 5,222 $14.8M
SA Smith A O Corp 0.8% Added 21% 253,455 $14.3M
Vertex Pharmaceuticals Inc 0.7% Added 3.4% 25,689 $13.4M
Thermo Fisher Scientific Inc 0.7% Trimmed 0.7% 19,224 $13M
BH Berkshire Hathaway Inc Del 0.7% Unchanged 17 $12.7M
Weyerhaeuser Co 0.6% Added 1.8% 631,188 $12M
LW Lamb Weston Hldgs Inc 0.6% Trimmed 3.9% 283,416 $11.8M
CT Cognizant Technology Solutio 0.5% Added 1.9% 161,041 $9.25M
Alphabet Inc 0.5% Trimmed 0.6% 27,147 $9.25M
Diageo PLC 0.5% Trimmed 23% 107,867 $9.23M
Ecolab Inc 0.4% Added 2.2% 29,375 $8.07M
Corning Inc 0.4% Added 6.5% 50,176 $7.72M
Jpmorgan Chase & Co 0.4% Trimmed 3.3% 20,097 $6.65M
Medtronic PLC 0.3% Trimmed 5.1% 65,661 $5.67M
Mastercard Incorporated 0.3% Added 2.3% 9,053 $4.99M
Conocophillips 0.3% Added 1.6% 39,113 $4.9M
Ge Vernova Inc 0.3% Added 8.3% 5,124 $4.87M

Showing top 60 of 216 positions.

Timeline of changes

What changed each quarter, from the filings' own share counts. Largest moves first; most recent 8 quarters.

Q3 2026

quarter ended September 30, 2026 · filed October 29, 2026

Company Action Shares changed Value of change % of portfolio
Exxonmobil Holdings Corp New +102,762 +$16.7M 0.9%
Exxon Mobil Corp Exited −102,931 −$14.1M —
Boeing Co Added +22,015 +$4.1M 0.9%
AM Applied Matls Inc Trimmed −6,400 −$3.27M 6.6%
JC Johnson Controls Internation Trimmed −18,408 −$2.74M 3.3%
Diageo PLC Trimmed −31,839 −$2.73M 0.5%
SA Smith A O Corp Added +43,125 +$2.43M 0.8%
CC Carlisle Cos Inc New +6,797 +$2.19M 0.1%
Veralto Corp Added +17,926 +$1.69M 0.1%
Analog Devices Inc Trimmed −4,024 −$1.6M 4.8%

Showing the 10 largest of 138 changes.

Q2 2026

quarter ended June 30, 2026 · filed August 07, 2026

Company Action Shares changed Value of change % of portfolio
Boeing Co Added +69,627 +$15.1M 0.8%
AM Applied Matls Inc Trimmed −20,318 −$14.7M 9.4%
SA Smith A O Corp Added +120,224 +$7.54M 0.7%
JC Johnson Controls Internation Trimmed −48,530 −$7.09M 3.3%
Diageo PLC Trimmed −86,526 −$6.95M 0.6%
Analog Devices Inc Trimmed −16,663 −$6.62M 4.8%
GA Ge Aerospace Trimmed −15,091 −$5.64M 4.5%
Corning Inc Trimmed −18,838 −$4.81M 0.6%
Paychex Inc Added +30,914 +$3.04M 2.1%
DE Devon Energy Corp New Added +49,153 +$2.03M 0.8%

Showing the 10 largest of 156 changes.

Q1 2026

quarter ended March 31, 2026 · filed May 07, 2026

Company Action Shares changed Value of change % of portfolio
Exact Sciences Corp Exited −107,468 −$10.9M —
JC Johnson Controls Internation Trimmed −32,535 −$4.26M 3.6%
SA Smith A O Corp Added +63,449 +$4.18M 0.3%
Paychex Inc Added +18,346 +$1.69M 2.0%
LW Lamb Weston Hldgs Inc Added +38,674 +$1.63M 0.6%
GA Ge Aerospace Trimmed −5,649 −$1.6M 3.9%
Diageo PLC Trimmed −21,329 −$1.59M 1.0%
Microsoft Corp Added +3,806 +$1.41M 4.7%
Autodesk Inc Added +4,958 +$1.19M 2.0%
Gilead Sciences Inc Trimmed −8,425 −$1.17M 1.3%

Showing the 10 largest of 159 changes.

Q4 2025

quarter ended December 31, 2025 · filed February 10, 2026

Company Action Shares changed Value of change % of portfolio
Unilever PLC Exited −393,834 −$23.3M —
Unilever PLC New +343,077 +$22.4M 1.3%
GA Ge Aerospace Trimmed −16,669 −$5.13M 4.3%
JC Johnson Ctls Intl PLC Trimmed −41,303 −$4.95M 3.5%
Microsoft Corp Trimmed −9,593 −$4.64M 6.1%
Gilead Sciences Inc Trimmed −28,306 −$3.47M 1.2%
Rtx Corporation Trimmed −14,556 −$2.67M 3.5%
Analog Devices Inc Trimmed −8,905 −$2.42M 3.8%
Albemarle Corp Trimmed −13,568 −$1.92M 1.9%
LW Lamb Weston Hldgs Inc Added +44,564 +$1.87M 0.5%

Showing the 10 largest of 155 changes.

Q3 2025

quarter ended September 30, 2025 · filed October 30, 2025

Company Action Shares changed Value of change % of portfolio
AM Applied Matls Inc Added +17,397 +$3.56M 3.1%
Corning Inc Trimmed −36,291 −$2.98M 0.4%
JC Johnson Ctls Intl PLC Trimmed −26,607 −$2.93M 3.5%
LW Lamb Weston Hldgs Inc Added +40,944 +$2.38M 0.6%
Gilead Sciences Inc Trimmed −20,655 −$2.29M 1.3%
Alphabet Inc Added +7,221 +$1.76M 1.8%
Alphabet Inc Added +6,625 +$1.61M 0.4%
GA Ge Aerospace Trimmed −4,964 −$1.49M 4.5%
Microsoft Corp Trimmed −2,074 −$1.07M 6.8%
BH Berkshire Hathaway Inc Del Trimmed −1,818 −$914K 2.9%

Showing the 10 largest of 142 changes.

Q2 2025

quarter ended June 30, 2025 · filed August 08, 2025

Company Action Shares changed Value of change % of portfolio
Gilead Sciences Inc Trimmed −60,746 −$6.73M 1.4%
AM Applied Matls Inc Added +29,956 +$5.48M 2.7%
Ge Vernova Inc Trimmed −8,134 −$4.3M 0.3%
LW Lamb Weston Hldgs Inc Added +55,139 +$2.86M 0.4%
Merck & Co Inc Trimmed −35,972 −$2.85M 0.9%
Corning Inc Trimmed −48,379 −$2.54M 0.4%
Microsoft Corp Trimmed −4,328 −$2.15M 6.8%
BH Berkshire Hathaway Inc Del Trimmed −2 −$1.46M 0.6%
Alphabet Inc Added +6,923 +$1.22M 1.3%
Fastenal Co Added +26,550 +$1.12M 0.1%

Showing the 10 largest of 165 changes.

Q1 2025

quarter ended March 31, 2025 · filed May 02, 2025

Company Action Shares changed Value of change % of portfolio
Corning Inc Trimmed −114,973 −$5.26M 0.5%
Ge Vernova Inc Trimmed −15,459 −$4.72M 0.3%
Merck & Co Inc Trimmed −39,396 −$3.54M 1.3%
AM Applied Matls Inc Added +15,648 +$2.27M 2.0%
LW Lamb Weston Hldgs Inc Added +37,740 +$2.01M 0.2%
Alphabet Inc Added +11,922 +$1.84M 1.1%
Diageo PLC Added +15,254 +$1.6M 1.7%
CI Caci Intl Inc Added +3,580 +$1.31M 2.0%
Albemarle Corp Added +12,014 +$865K 1.1%
Fedex Corp Trimmed −3,120 −$761K —

Showing the 10 largest of 149 changes.

Q4 2024

quarter ended December 31, 2024 · filed February 06, 2025

Company Action Shares changed Value of change % of portfolio
BH Berkshire Hathaway Inc Del Added +10 +$9.51M 1.0%
Ge Vernova Inc Trimmed −17,147 −$5.64M 0.7%
Alphabet Inc Added +23,269 +$4.4M 1.2%
Corning Inc Trimmed −57,332 −$2.72M 0.8%
LW Lamb Weston Hldgs Inc New +35,022 +$2.34M 0.1%
Teledyne Technologies Inc Added +4,125 +$1.91M 1.1%
Merck & Co Inc Trimmed −16,716 −$1.66M 1.6%
Nike Inc Added +17,168 +$1.3M 0.4%
Hormel Foods Corp Added +40,935 +$1.28M 1.9%
Blackbaud Inc Trimmed −17,350 −$1.28M —

Showing the 10 largest of 143 changes.

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