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Super Investors Chesley Taft & Associates LLC
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Chesley Taft & Associates LLC

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

Portfolio value
$2.56B
Positions
365
Quarter ended
September 30, 2026
Filed
October 13, 2026

Reported portfolio value by quarter (54 quarters reported)

$2.57B $863M
Q2 13 Q1 16 Q4 18 Q3 21 Q2 24 Q3 26

$863M in Q2 2013 → $2.56B 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
Alphabet Inc 5.4% Trimmed 2.2% 409,124 $139M
Microsoft Corp 4.3% Trimmed 1.6% 213,746 $110M
Nvidia Corporation 4.1% Trimmed 0.3% 463,267 $106M
Apple Inc 3.6% Trimmed 1.9% 278,953 $92.9M
Amazon Com Inc 3.3% Trimmed 1.0% 336,775 $83.9M
Broadcom Inc 2.9% Trimmed 0.9% 211,031 $74.1M
Palo Alto Networks Inc 2.4% Trimmed 14% 157,154 $62.4M
Costco Wholesale Corporation 2.3% Trimmed 1.6% 64,951 $59.1M
Jpmorgan Chase & Co 2.2% Trimmed 1.4% 168,747 $55.8M
Johnson & Johnson 2.2% Trimmed 0.7% 208,339 $55.2M
IT Ishares Tr 2.0% Added 1.9% 550,684 $52.3M
IT Ishares Tr 1.9% Trimmed 1.3% 366,778 $49.9M
SS State Str SPDR S&P 500 ETF T 1.8% Trimmed 1.3% 60,649 $46.3M
Visa Inc 1.7% Trimmed 0.9% 121,436 $43.6M
IT Ishares Tr 1.7% Trimmed 0.1% 601,627 $43.3M
Stryker Corporation 1.5% Trimmed 0.6% 137,980 $38M
SG SPDR Gold Tr 1.5% Added 6.1% 99,356 $37.8M
Alphabet Inc 1.3% Trimmed 2.1% 98,667 $33.9M
Chubb Limited 1.3% Added 0.5% 104,214 $33.9M
Amphenol Corp 1.3% Added 95% 393,350 $33.2M
Thermo Fisher Scientific Inc 1.1% Trimmed 0.1% 42,278 $28.5M
Mastercard Incorporated 1.1% Added 0.6% 50,818 $28M
Abbott Laboratories 1.1% Added 1.0% 282,519 $27.9M
Meta Platforms Inc 1.0% Trimmed 2.3% 36,394 $26.4M
VT Vanguard Tax-managed Fds 1.0% Added 1.7% 361,112 $25.5M
American Express Co 1.0% Trimmed 0.8% 81,243 $24.7M
IT Ishares Tr 0.9% Trimmed 6.6% 31,191 $23.9M
EL Eli Lilly & Co 0.9% Trimmed 0.2% 20,302 $23.5M
Rtx Corporation 0.9% Added 1.1% 125,803 $23.4M
Coca Cola Co 0.9% Trimmed 1.3% 264,146 $22.7M
VI Vanguard Intl Equity Index F 0.8% Trimmed 1.3% 259,794 $21.6M
CO Capital One Finl Corp 0.8% Added 2.0% 110,914 $21.4M
Oracle Corp 0.8% Trimmed 0.6% 146,265 $20.1M
Pepsico Inc 0.8% Trimmed 2.6% 157,864 $20M
Citigroup Inc 0.8% Added 0.6% 153,002 $19.8M
WM Waste Mgmt Inc Del 0.8% Added 2.0% 94,353 $19.2M
IT Illinois Tool Wks Inc 0.7% Trimmed 0.7% 73,883 $19M
Autozone Inc 0.7% Added 0.5% 6,599 $18.7M
Salesforce Inc 0.7% Trimmed 6.6% 79,545 $18.3M
Wells Fargo & Co 0.7% Trimmed 2.6% 213,495 $17.1M
AP Accenture PLC Ireland 0.6% Trimmed 0.9% 89,447 $16.4M
JP J P Morgan Exchange Traded F 0.6% Added 6.1% 331,298 $15.8M
JP J P Morgan Exchange Traded F 0.6% Added 5.5% 301,115 $15.2M
DW Disney Walt Co 0.6% Trimmed 2.0% 141,913 $14.9M
Astrazeneca PLC 0.6% Added 12% 91,361 $14.8M
Eqt Corp 0.6% Trimmed 12% 300,828 $14.6M
UP Union Pac Corp 0.6% Added 7.9% 53,202 $14.5M
HA Honeywell Aerospace Inc 0.6% New 93,068 $14.4M
IT Ishares Tr 0.5% Added 0.0% 135,428 $14.1M
IT Ishares Tr 0.5% Trimmed 3.0% 134,801 $13.6M
SS Select Sector SPDR Tr 0.5% Added 0.0% 253,915 $13.6M
Chevron Corporation 0.5% Added 30% 60,655 $12.4M
VI Vanguard Index Fds 0.5% Added 1.8% 40,619 $11.6M
IE Intercontinental Exchange In 0.5% Trimmed 1.4% 75,794 $11.5M
Ecolab Inc 0.4% Added 1.0% 40,811 $11.2M
HI Honeywell Intl Inc 0.4% New 52,529 $11.1M
Nextera Energy Inc 0.4% Added 0.7% 145,263 $11M
VI Vanguard Index Fds 0.4% Added 3.7% 138,411 $10.9M
IT Ishares Tr 0.4% Added 3.9% 210,870 $10.8M
VI Vanguard Index Fds 0.4% Trimmed 1.2% 28,377 $10.6M

Showing top 60 of 365 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 13, 2026

Company Action Shares changed Value of change % of portfolio
Exxon Mobil Corp Exited −129,699 −$17.7M —
Amphenol Corp Added +191,288 +$16.1M 1.3%
HA Honeywell Aerospace Inc New +93,068 +$14.4M 0.6%
HI Honeywell Intl Inc New +52,529 +$11.1M 0.4%
Uber Technologies Inc Trimmed −161,036 −$11M 0.3%
Palo Alto Networks Inc Trimmed −24,951 −$9.91M 2.4%
Home Depot Inc Trimmed −33,087 −$9.41M 0.3%
ON Oneok Inc New Exited −62,253 −$5.41M —
IT Ishares Tr Added +138,250 +$3.47M 0.1%
Valero Energy Corp Added +8,418 +$3.26M 0.2%

Showing the 10 largest of 307 changes.

Q2 2026

quarter ended June 30, 2026 · filed July 08, 2026

Company Action Shares changed Value of change % of portfolio
HI Honeywell Intl Inc Exited −99,097 −$22.4M —
VI Vanguard Index Fds Added +101,478 +$8.18M 0.4%
Microsoft Corp Trimmed −20,915 −$7.8M 3.2%
Salesforce Inc Added +41,847 +$6.56M 0.5%
Tractor Supply Co Exited −114,324 −$5.18M —
Micron Technology Inc Added +3,454 +$3.99M 0.3%
CD Cadence Design System Inc Trimmed −10,367 −$3.89M —
Palo Alto Networks Inc Trimmed −10,434 −$3.56M 2.4%
Abbott Laboratories Added +37,055 +$3.36M 1.0%
Uber Technologies Inc Added +45,090 +$3.25M 0.8%

Showing the 10 largest of 345 changes.

Q1 2026

quarter ended March 31, 2026 · filed April 13, 2026

Company Action Shares changed Value of change % of portfolio
Eqt Corp Added +299,915 +$19.1M 0.9%
Astrazeneca PLC New +78,802 +$15.5M 0.6%
Astrazeneca PLC Exited −152,750 −$14M —
Broadcom Inc Trimmed −38,844 −$12M 2.8%
SG SPDR Gold Tr Trimmed −20,255 −$8.72M 1.7%
IS Ishares Silver Tr Exited −101,350 −$6.53M —
Amazon Com Inc Added +24,300 +$5.06M 3.0%
Oracle Corp Trimmed −31,845 −$4.68M 0.9%
BD Becton Dickinson & Co Trimmed −29,568 −$4.65M —
CO Capital One Finl Corp Added +23,809 +$4.34M 0.8%

Showing the 10 largest of 334 changes.

Q4 2025

quarter ended December 31, 2025 · filed January 14, 2026

Company Action Shares changed Value of change % of portfolio
Netflix Inc Added +94,868 +$8.89M 0.4%
American Express Co Trimmed −20,733 −$7.67M 1.2%
Microsoft Corp Added +15,639 +$7.56M 4.6%
CI Canadian Imperial Bank Of Co Added +67,467 +$6.11M 0.3%
SG SPDR Gold Tr Added +12,402 +$4.92M 1.8%
IT Ishares Tr Added +52,900 +$4.48M 1.7%
SS SPDR S&P 500 ETF Tr Added +6,502 +$4.43M 1.7%
JP J P Morgan Exchange Traded F Added +78,847 +$3.98M 0.5%
Nvidia Corporation Added +19,111 +$3.56M 3.5%
Visa Inc Added +9,416 +$3.3M 1.8%

Showing the 10 largest of 355 changes.

Q3 2025

quarter ended September 30, 2025 · filed October 08, 2025

Company Action Shares changed Value of change % of portfolio
CO Capital One Finl Corp New +70,702 +$15M 0.6%
Uber Technologies Inc Added +103,779 +$10.2M 1.0%
Zoetis Inc Trimmed −63,356 −$9.27M 0.2%
Broadcom Inc Trimmed −15,238 −$5.03M 3.6%
Alphabet Inc Trimmed −15,620 −$3.8M 4.4%
Microsoft Corp Trimmed −5,892 −$3.05M 5.0%
DW Disney Walt Co Trimmed −22,875 −$2.62M 0.8%
Salesforce Inc Trimmed −10,597 −$2.51M 0.4%
Eqt Corp New +40,050 +$2.18M 0.1%
Stryker Corporation Trimmed −5,467 −$2.02M 2.2%

Showing the 10 largest of 292 changes.

Q2 2025

quarter ended June 30, 2025 · filed July 09, 2025

Company Action Shares changed Value of change % of portfolio
Uber Technologies Inc Added +133,835 +$12.5M 0.6%
Amazon Com Inc Added +52,638 +$11.5M 3.0%
BD Becton Dickinson & Co Trimmed −32,872 −$5.66M 0.3%
Alphabet Inc Trimmed −24,723 −$4.39M 3.5%
IT Ishares Tr Trimmed −67,008 −$4.16M 1.7%
Apple Inc Trimmed −17,549 −$3.6M 2.6%
IT Ishares Tr Trimmed −31,880 −$3.33M 0.7%
JP J P Morgan Exchange Traded F Added +66,440 +$3.3M 0.3%
CG Cboe Global Mkts Inc Added +13,675 +$3.19M 0.3%
Rtx Corporation Added +21,740 +$3.17M 0.7%

Showing the 10 largest of 285 changes.

Q1 2025

quarter ended March 31, 2025 · filed April 10, 2025

Company Action Shares changed Value of change % of portfolio
Broadcom Inc Trimmed −65,632 −$11M 2.2%
Pepsico Inc Trimmed −68,124 −$10.2M 1.3%
Astrazeneca PLC Added +128,510 +$9.45M 0.5%
BD Becton Dickinson & Co Added +33,860 +$7.76M 0.8%
Danaher Corporation Trimmed −36,810 −$7.55M 0.4%
HI Honeywell Intl Inc Trimmed −25,230 −$5.34M 1.0%
BA Bank America Corp Exited −112,627 −$4.95M —
Citigroup Inc Added +44,842 +$3.18M 0.4%
Arista Networks Inc Exited −25,254 −$2.79M —
SS Schwab Strategic Tr New +69,403 +$1.74M 0.1%

Showing the 10 largest of 303 changes.

Q4 2024

quarter ended December 31, 2024 · filed January 17, 2025

Company Action Shares changed Value of change % of portfolio
Palo Alto Networks Inc Added +92,350 +$16.8M 1.6%
BD Becton Dickinson & Co Added +31,732 +$7.2M 0.4%
Tractor Supply Co Added +93,376 +$4.95M 0.3%
Netflix Inc Added +5,463 +$4.87M 0.4%
Blackrock Inc New +4,666 +$4.78M 0.2%
American Express Co Added +14,111 +$4.19M 1.5%
WF Wells Fargo Co New Added +53,773 +$3.78M 0.6%
IT Ishares Tr Trimmed −30,345 −$2.94M 0.4%
Arista Networks Inc New +25,254 +$2.79M 0.1%
IT Ishares Tr Trimmed −23,345 −$2.49M 0.9%

Showing the 10 largest of 273 changes.

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