CT
Chesley Taft & Associates LLC 13F Filings Tracker & Latest Positions (Q3 2026)
Chesley Taft & Associates LLCCIK: 0001164632
Diversified strategyMomentum followerLong-term holder
Total reported value
$2.6B
Reporting period: 2026-09-30 · Number of holdings: 629
Chesley Taft & Associates LLC disclosed 629 holdings in its latest 13F filing for the period ending 2026-09-30, with total reported value of $2.6B and a quarterly turnover rate of 12.7%.
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Personality snowflake
- Concentration
- 6.79
- Portfolio Stability
- 12.73
- Momentum
- 100
- Sector conviction
- 52.07
- Diversification
- 100
- Sizing Uniformity
- 77.17
Chesley Taft & Associates LLC's disclosed holdings carry a Herfindahl concentration index of 0.017 — mathematically equivalent to about 59 equally-sized positions, well below its 629 actual disclosed holdings. That gap points to a strategy built around a small core of high-conviction bets rather than broad diversification.
Position sizes vary widely across the portfolio (a coefficient of variation of 2.28), with a handful of outsized bets alongside many smaller positions.
No strong tilt toward either adding to existing winners or initiating outsized new positions was observed in the latest reported quarter.
Source and citation information
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Recent moves
View source Form 13F filing on SEC.govAdd MSFT
-1.6% $28.6M
Sold out XOM
New buy 43849R105
Trim HD
-54.4% -$13.6M
Add NVDA
-0.3% $12.8M
Trim UBER
-59.3% -$12.0M
Holdings Map
New buyAddUnchangedTrim
Top 10 holdings by weight
Full holdings list this quarter
Showing top 200 holdings (of 629 total)
| # | Ticker | Issuer | Asset Subclass | Weight | Weight Change | Shares Change | 4Q Trend |
|---|---|---|---|---|---|---|---|
| 1 | GOOG | Alphabet Inc-cl C | Stock-Comm Services | 5.45% | -0.31% | -2.23% | |
| 2 | MSFT | Microsoft CORP | Stock-Tech | 4.28% | +1.13% | -1.58% | |
| 3 | NVDA | Nvidia CORP | Stock-Tech | 4.13% | +0.51% | -0.31% | |
| 4 | AAPL | Apple Inc | Stock-Tech | 3.63% | +0.43% | -1.90% | |
| 5 | AMZN | Amazon.com Inc | Stock-Consumer Disc | 3.28% | +0.12% | -0.96% | |
| 6 | AVGO | Broadcom Inc | Stock-Tech | 2.90% | -0.23% | -0.91% | |
| 7 | PANW | Palo Alto Networks Inc | Stock-Tech | 2.44% | +0.02% | -13.70% | |
| 8 | COST | Costco Wholesale CORP | Stock-Consumer Staples | 2.31% | -0.10% | -1.64% | |
| 9 | JPM | Jpmorgan Chase & Co | Stock-Financials | 2.18% | — | -1.36% | |
| 10 | JNJ | Johnson & Johnson | Stock-Healthcare | 2.16% | +0.09% | -0.67% | |
| 11 | IXUS | Ishares Core Intl Stock ETF | ETF-Other | 2.04% | +0.03% | +1.94% | |
| 12 | IJR | Ishares Core S&p Small-cap E | ETF-Small Cap | 1.95% | -0.20% | -1.33% | |
| 13 | SPY | Ss Spdr S&p 500 ETF Trust-us | ETF-Large Cap & Growth | 1.81% | +0.02% | -1.33% | |
| 14 | V | Visa Inc-class A Shares | Stock-Financials | 1.71% | +0.07% | -0.90% | |
| 15 | IJH | Ishares Core S&p Midcap ETF | ETF-Other | 1.69% | -0.12% | -0.09% | |
| 16 | SYK | Stryker CORP | Stock-Healthcare | 1.48% | -0.22% | -0.55% | |
| 17 | GLD | Spdr Gold Shares | ETF-Commodities | 1.48% | +0.14% | +6.07% | |
| 18 | GOOGL | Alphabet Inc-cl A | Stock-Comm Services | 1.33% | -0.07% | -2.14% | |
| 19 | CB | Chubb Limited | Stock-Financials | 1.32% | -0.06% | +0.52% | |
| 20 | APH | Amphenol Corp-cl A | Stock-Tech | 1.30% | -0.09% | +94.67% | |
| 21 | TMO | Thermo Fisher Scientific Inc | Stock-Healthcare | 1.12% | +0.29% | -0.13% | |
| 22 | MA | Mastercard Inc - A | Stock-Financials | 1.10% | +0.09% | +0.59% | |
| 23 | ABT | Abbott Laboratories | Stock-Healthcare | 1.09% | +0.10% | +1.01% | |
| 24 | META | Meta Platforms Inc-class A | Stock-Comm Services | 1.03% | +0.21% | -2.33% | |
| 25 | VEA | Vanguard Ftse Developed ETF | ETF-Other | 1.00% | +0.02% | +1.71% | |
| 26 | AXP | American Express Co | Stock-Financials | 0.97% | -0.11% | -0.85% | |
| 27 | IVV | Ishares Core S&p 500 ETF | ETF-Large Cap & Growth | 0.93% | -0.04% | -6.60% | |
| 28 | LLY | Eli Lilly & Co | Stock-Healthcare | 0.92% | -0.03% | -0.22% | |
| 29 | RTX | Rtx CORP | Stock-Industrials | 0.91% | -0.01% | +1.09% | |
| 30 | KO | Coca-cola Co/the | Stock-Consumer Staples | 0.89% | +0.04% | -1.31% | |
| 31 | VEU | Vanguard Ftse All-world Ex-u | ETF-Other | 0.84% | -0.02% | -1.34% | |
| 32 | COF | Capital One Financial CORP | Stock-Financials | 0.84% | -0.01% | +2.01% | |
| 33 | ORCL | Oracle CORP | Stock-Tech | 0.78% | -0.06% | -0.64% | |
| 34 | PEP | Pepsico Inc | Stock-Consumer Staples | 0.78% | -0.07% | -2.58% | |
| 35 | C | Citigroup Inc | Stock-Financials | 0.77% | -0.06% | +0.62% | |
| 36 | WM | Waste Management Inc | Stock-Industrials | 0.75% | -0.05% | +2.02% | |
| 37 | ITW | Illinois Tool Works | Stock-Industrials | 0.74% | -0.04% | -0.71% | |
| 38 | AZO | Autozone Inc | Stock-Consumer Disc | 0.73% | -0.09% | +0.46% | |
| 39 | CRM | Salesforce Inc | Stock-Tech | 0.71% | +0.19% | -6.62% | |
| 40 | WFC | Wells Fargo & Co | Stock-Financials | 0.67% | -0.04% | -2.64% | |
| 41 | ACN | Accenture plc | Stock-Tech | 0.64% | +0.20% | -0.91% | |
| 42 | JMUB | Jpmorgan Municipal ETF | ETF-Other | 0.62% | — | +6.12% | |
| 43 | JMST | JPM Ultra-short Muni Income | ETF-Other | 0.59% | +0.03% | +5.53% | |
| 44 | DIS | Walt Disney Co/the | Stock-Comm Services | 0.58% | +0.04% | -2.04% | |
| 45 | AZN | AstraZeneca PLC | Stock-Healthcare | 0.58% | -0.02% | +12.41% | |
| 46 | EQT | Eqt CORP | Stock-Energy | 0.57% | -0.14% | -12.41% | |
| 47 | UNP | Union Pacific CORP | Stock-Industrials | 0.57% | +0.05% | +7.93% | |
| 48 | ✓ | Stock-Other | 0.56% | +0.56% | NEW | ||
| 49 | EFA | Ishares Msci Eafe ETF | ETF-Other | 0.55% | — | +0.00% | |
| 50 | MUB | Ishares National Muni Bond E | ETF-Other | 0.53% | -0.05% | -2.98% |
1–50 of 200
Portfolio Performance
Performance for Q4 2026
+1.4%
Performance Last 4 Quarters
+9.4%
- Stdev
- +10.8%
- Beta
- +0.84
- Alpha
- -1.5%
- Max Drawdown
- -7.3%
- Annualized Perf
- +18.7%
- Batting Avg vs S&P
- +36.1%
- Sortino
- +3.34
- Stutzer
- +0.48
- Treynor
- +0.21
- Sterling
- +1.2
- Calmar
- +2.56
- Information Ratio
- -1.38
- Tracking Error
- +3.7%
- Stdev Down
- +5.3%
- Winning Months %
- +69.4%
- Losing Months %
- +30.6%
- Best 12 Months
- +29.9%
- Worst 12 Months
- +6.6%
- Efficiency Ratio
- +0.65
- Sharpe
- +1.66
- Stdev Sectors
- +8.7%
- Skewness
- -0.15
- Kurtosis
- +0.2
- Upside Potential
- +4.88
Reported value over time
Sector allocation
Sector allocation over time
Quarterly history
| Period | Holdings | Total value | Stability | Top holdings | |
|---|---|---|---|---|---|
| 2026 Q3 | 629 | $2.6B | 13 | ||
| 2026 Q2 | 637 | $2.6B | 17 | ||
| 2026 Q1 | 621 | $2.4B | 16 | ||
| 2025 Q4 | 624 | $2.5B | 13 | ||
| 2025 Q3 | 348 | $2.4B | 24 | ||
| 2025 Q2 | 334 | $2.2B | 0 | ||
| 2025 Q1 | 330 | $2.1B | 100 | ||
| 2024 Q4 | 326 | $2.2B | 0 | ||
| 2024 Q3 | 323 | $2.1B | 0 | ||
| 2024 Q2 | 309 | $2.0B | 0 | ||
| 2024 Q1 | 311 | $2.0B | 0 | ||
| 2023 Q4 | 301 | $1.8B | 0 | ||
| 2023 Q3 | 289 | $1.5B | 0 | ||
| 2023 Q2 | 291 | $1.6B | 0 | ||
| 2023 Q1 | 286 | $1.5B | 0 | ||
| 2022 Q4 | 284 | $1.5B | 0 | ||
| 2022 Q3 | 279 | $1.4B | 0 | ||
| 2022 Q2 | 286 | $1.5B | 0 | ||
| 2022 Q1 | 294 | $1.7B | 0 | ||
| 2021 Q4 | 300 | $1.9B | 0 | ||
| 2021 Q3 | 298 | $1.8B | 0 | ||
| 2021 Q2 | 294 | $1.7B | 100 | ||
| 2021 Q1 | 288 | $1.7B | 13 | ||
| 2020 Q4 | 286 | $1.6B | 14 | ||
| 2020 Q3 | 264 | $1.4B | 14 | ||
| 2020 Q2 | 257 | $1.3B | 25 | ||
| 2020 Q1 | 247 | $1.1B | 29 | ||
| 2019 Q4 | 263 | $1.4B | 15 | ||
| 2019 Q3 | 266 | $1.3B | 12 | ||
| 2019 Q2 | 253 | $1.3B | 13 | ||
| 2019 Q1 | 256 | $1.2B | 22 | ||
| 2018 Q4 | 254 | $1.0B | 27 | ||
| 2018 Q3 | 281 | $1.3B | 13 | ||
| 2018 Q2 | 273 | $1.2B | 11 | ||
| 2018 Q1 | 267 | $1.1B | 14 | ||
| 2017 Q4 | 285 | $1.2B | 13 | ||
| 2017 Q3 | 278 | $1.2B | 20 | ||
| 2017 Q2 | 276 | $1.1B | 13 | ||
| 2017 Q1 | 273 | $1.1B | 14 | ||
| 2016 Q4 | 268 | $1.0B | 17 | ||
| 2016 Q3 | 253 | $992.7M | 13 | ||
| 2016 Q2 | 250 | $975.2M | 11 | ||
| 2016 Q1 | 243 | $948.4M | 19 | ||
| 2015 Q4 | 246 | $951.8M | 26 | ||
| 2015 Q3 | 228 | $916.4M | 20 | ||
| 2015 Q2 | 232 | $980.7M | 11 | ||
| 2015 Q1 | 241 | $974.5M | 15 | ||
| 2014 Q4 | 244 | $988.9M | 19 | ||
| 2014 Q3 | 245 | $955.6M | 11 | ||
| 2014 Q2 | 250 | $967.3M | 15 | ||
| 2014 Q1 | 249 | $933.2M | 21 | ||
| 2013 Q4 | 268 | $1.0B | 15 | ||
| 2013 Q3 | 265 | $917.1M | 15 | ||
| 2013 Q2 | 264 | $862.9M | — |
Holding changes this quarter
Chesley Taft & Associates LLC's most significant position changes for 2026-09-30: Sold out: Exxon Mobil CORP (XOM); New buy: ; New buy: ; Sold out: Oneok Inc (OKE); Sold out: Ishares Ibonds Dec 2029 Term (IBDU).
Showing top 200 changes by size (of 382 total)
| # | Ticker | Issuer | Weight Change | Shares Change | Action |
|---|---|---|---|---|---|
| 1 | MSFT | Microsoft CORP | +1.1% | -1.58% | Trim |
| 2 | ✓ | +0.6% | NEW | New buy | |
| 3 | NVDA | Nvidia CORP | +0.5% | -0.31% | Trim |
| 4 | ✓ | +0.4% | NEW | New buy | |
| 5 | AAPL | Apple Inc | +0.4% | -1.90% | Trim |
| 6 | TMO | Thermo Fisher Scientific Inc | +0.3% | -0.13% | Trim |
| 7 | META | Meta Platforms Inc-class A | +0.2% | -2.33% | Trim |
| 8 | ACN | Accenture plc | +0.2% | -0.91% | Trim |
| 9 | CRM | Salesforce Inc | +0.2% | -6.62% | Trim |
| 10 | CVX | Chevron CORP | +0.2% | +30.08% | Add |
| 11 | GLD | Spdr Gold Shares | +0.1% | +6.07% | Add |
| 12 | VLO | Valero Energy CORP | +0.1% | +484.91% | Add |
| 13 | OEF | Ishares S&p 100 ETF | +0.1% | +15872.56% | Add |
| 14 | AMZN | Amazon.com Inc | +0.1% | -0.96% | Trim |
| 15 | ABT | Abbott Laboratories | +0.1% | +1.01% | Add |
| 16 | MA | Mastercard Inc - A | +0.1% | +0.59% | Add |
| 17 | JNJ | Johnson & Johnson | +0.1% | -0.67% | Trim |
| 18 | ICE | Intercontinental Exchange In | +0.1% | -1.35% | Trim |
| 19 | V | Visa Inc-class A Shares | +0.1% | -0.90% | Trim |
| 20 | UNP | Union Pacific CORP | +0.1% | +7.93% | Add |
| 21 | DHR | Danaher CORP | 0% | -0.96% | Trim |
| 22 | MCK | Mckesson CORP | 0% | +11.63% | Add |
| 23 | KO | Coca-cola Co/the | 0% | -1.31% | Trim |
| 24 | JPIE | Jpmorgan Income ETF | 0% | +26.61% | Add |
| 25 | DIS | Walt Disney Co/the | 0% | -2.04% | Trim |
| 26 | MRK | Merck & Co. Inc. | 0% | -0.35% | Trim |
| 27 | CBOE | Cboe Global Markets Inc | 0% | -0.66% | Trim |
| 28 | PFE | Pfizer Inc | 0% | -1.39% | Trim |
| 29 | IXUS | Ishares Core Intl Stock ETF | 0% | +1.94% | Add |
| 30 | ESGV | Vanguard Esg US Stock ETF | 0% | +289.02% | Add |
| 31 | WTW | Willis Towers Watson Public Limited Company | 0% | -1.14% | Trim |
| 32 | AMGN | Amgen Inc | 0% | -5.15% | Trim |
| 33 | ✓ | 0% | NEW | New buy | |
| 34 | JMST | JPM Ultra-short Muni Income | 0% | +5.53% | Add |
| 35 | CWI | State Street Spdr Msci Acwi | 0% | +17.53% | Add |
| 36 | ULTA | Ulta Beauty Inc | 0% | +12.21% | Add |
| 37 | VSGX | Vanguard Esg Intl Stock ETF | 0% | NEW | New buy |
| 38 | IBTI | Ishares Ibonds Dec 2028 Term | 0% | NEW | New buy |
| 39 | GPN | Global Payments Inc | 0% | NEW | New buy |
| 40 | FLOT | Ishares Floating Rate Bond E | 0% | +3.94% | Add |
| 41 | ADP | Automatic Data Processing | 0% | -4.07% | Trim |
| 42 | DELL | Dell Technologies -c | 0% | -15.31% | Trim |
| 43 | NEM | Newmont CORP | 0% | -1.47% | Trim |
| 44 | SPY | Ss Spdr S&p 500 ETF Trust-us | 0% | -1.33% | Trim |
| 45 | ZBRA | Zebra Technologies Corp-cl A | 0% | — | Unchanged |
| 46 | PANW | Palo Alto Networks Inc | 0% | -13.70% | Trim |
| 47 | ETN | Eaton Corporation plc | 0% | +4.39% | Add |
| 48 | AMD | Advanced Micro Devices | 0% | +4.40% | Add |
| 49 | T | At&t Inc | 0% | +1.36% | Add |
| 50 | VEA | Vanguard Ftse Developed ETF | 0% | +1.71% | Add |
1–50 of 200
* This report is exclusively curated by the AlphaSMO team. AlphaSMO is the web's most authoritative 13F / Inside Trader database, delivering precise insider trading and institutional holdings insights.
Filing History
FAQ
What is Chesley Taft & Associates LLC and what type of investor is it?
Chesley Taft & Associates LLC is an investment manager that files SEC Form 13F quarterly, disclosing its U.S. public equity holdings to regulators. As of the most recent reporting period (2026-09-30), the firm manages a tracked equity portfolio valued at approximately $2.6B, spread across 629 disclosed positions.
What are Chesley Taft & Associates LLC's largest equity positions?
Based on the latest 13F filing, Chesley Taft & Associates LLC's top holdings by market value are:
1. Alphabet Inc-cl C (GOOG) — $139.4M (5.5%)
2. Microsoft CORP (MSFT) — $109.6M (4.3%)
3. Nvidia CORP (NVDA) — $105.8M (4.1%)
4. Apple Inc (AAPL) — $92.9M (3.6%)
5. Amazon.com Inc (AMZN) — $83.9M (3.3%)
What changes did Chesley Taft & Associates LLC make in its most recent portfolio filing?
In the latest reported quarter, Chesley Taft & Associates LLC made 189 notable position adjustments: 13 new positions were initiated, 60 existing holdings were added to, 99 positions were partially reduced, and 17 were completely exited. The largest of these moves: Sold out: Exxon Mobil CORP (XOM); New buy: ; New buy: ; Sold out: Oneok Inc (OKE); Sold out: Ishares Ibonds Dec 2029 Term (IBDU)
What sectors does Chesley Taft & Associates LLC focus on?
Chesley Taft & Associates LLC is concentrated in the following sectors based on its current disclosed equity portfolio:
• Information Technology: 31.1%
• Financials: 17.0%
• Health Care: 13.3%
• Communication Services: 11.8%
• Industrials: 7.6%
• Consumer Discretionary: 7.5%
Investment Profile
Chesley Taft & Associates LLC returned an annualized 18.7% over the trailing 36 months — underperforming the S&P 500 by 1.5 points — based on a reconstructed track record of its disclosed 13F positions, with a beta of 0.84 (less volatile than the market) and a 36% quarterly batting average against the index.
Its portfolio is broadly diversified and long-term-holding, with 31.1% of the portfolio concentrated in Information Technology.
It has added to its PANW position over the past two quarters (+$31.6M, now $62.4M), while trimming COST over the same stretch (-$7.9M, still holding $59.1M).
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