FD
Foster Dykema Cabot & Co Inc/ma Historical SEC 13F Holdings & Archive (Q3 2023)
Foster Dykema Cabot & Co Inc/maCIK: 0001037558
Diversified strategyLong-term holder
Total reported value
$826.8M
Reporting period: 2023-09-30 · Number of holdings: 335
FOSTER DYKEMA CABOT & CO INC/MA disclosed 335 holdings in its latest 13F filing for the period ending 2023-09-30, with total reported value of $826.8M and a quarterly turnover rate of 0.0%.
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Personality snowflake
- Concentration
- 30.52
- Portfolio Stability
- 0
- Momentum
- 50
- Sector conviction
- 48
- Diversification
- 100
- Sizing Uniformity
- 50.37
Foster Dykema Cabot & Co Inc/ma's disclosed holdings carry a Herfindahl concentration index of 0.076 — mathematically equivalent to about 13 equally-sized positions, well below its 335 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 4.96), 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.
Sector classification currently covers about 47% of this portfolio's disclosed value; the remainder includes holdings (e.g. unmapped tickers, options, or other security types) not yet covered by our sector mapping.
Source and citation information
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Recent moves
View source Form 13F filing on SEC.govNo holding changes this quarter
Holdings Map
New buyAddUnchangedTrim
Top 10 holdings by weight
Full holdings list this quarter
Showing top 200 holdings (of 335 total)
| # | Ticker | Issuer | Asset Subclass | Weight | Weight Change | Shares Change | 4Q Trend |
|---|---|---|---|---|---|---|---|
| 1 | SPY | Ss Spdr S&p 500 ETF Trust-us | ETF-Large Cap & Growth | 22.03% | — | +0.17% | |
| 2 | JPST | Jpmorgan Ultra-short Income | ETF-Other | 10.66% | — | +2.79% | |
| 3 | ICSH | Ishares Ultra Short Duration | ETF-Other | 4.20% | — | +0.90% | |
| 4 | AMZN | Amazon.com Inc | Stock-Consumer Disc | 4.00% | — | -1.38% | |
| 5 | MSFT | Microsoft CORP | Stock-Tech | 3.77% | — | -0.11% | |
| 6 | LLY | Eli Lilly & Co | Stock-Healthcare | 3.50% | — | -0.21% | |
| 7 | COST | Costco Wholesale CORP | Stock-Consumer Staples | 3.17% | — | -0.50% | |
| 8 | APH | Amphenol Corp-cl A | Stock-Tech | 2.96% | — | -0.26% | |
| 9 | PWR | Quanta Services Inc | Stock-Industrials | 2.78% | — | -0.26% | |
| 10 | TMO | Thermo Fisher Scientific Inc | Stock-Healthcare | 2.61% | — | -0.04% | |
| 11 | JPM | Jpmorgan Chase & Co | Stock-Financials | 2.58% | — | +0.24% | |
| 12 | BRK-B | Berkshire Hathaway Inc-cl B | Stock-Other | 2.57% | — | -0.86% | |
| 13 | VRTX | Vertex Pharmaceuticals Inc | Stock-Healthcare | 2.50% | — | +0.07% | |
| 14 | XLI | Ss Industrial Select Sector | ETF-Other | 2.48% | — | +0.13% | |
| 15 | ACN | Accenture plc | Stock-Tech | 2.45% | — | -0.24% | |
| 16 | AXP | American Express Co | Stock-Financials | 2.37% | — | -0.12% | |
| 17 | PLD | Prologis Inc | Stock-Real Estate | 2.18% | — | +0.35% | |
| 18 | XLV | Ss Health Care Select Sector | ETF-Other | 2.12% | — | +0.51% | |
| 19 | WM | Waste Management Inc | Stock-Industrials | 2.06% | — | +0.38% | |
| 20 | LOW | Lowe's Cos Inc | Stock-Consumer Disc | 1.88% | — | -0.06% | |
| 21 | NOC | Northrop Grumman CORP | Stock-Industrials | 1.78% | — | +0.03% | |
| 22 | AAPL | Apple Inc | Stock-Tech | 1.75% | — | -1.28% | |
| 23 | XLF | Ss Financial Select Sector | ETF-Other | 1.68% | — | +0.31% | |
| 24 | IEFA | Ishares Core Msci Eafe ETF | ETF-Other | 1.63% | — | -2.50% | |
| 25 | VTI | Vanguard Total Stock Mkt ETF | ETF-Other | 1.55% | — | -2.07% | |
| 26 | GOOG | Alphabet Inc-cl C | Stock-Comm Services | 0.59% | — | — | |
| 27 | PG | Procter & Gamble Co/the | Stock-Consumer Staples | 0.58% | — | -0.77% | |
| 28 | XLK | Ss Technology Select Sector | ETF-Tech | 0.55% | — | -0.28% | |
| 29 | SPYX | Ss Spdr S&p 500 Foss Fl ETF | ETF-Large Cap & Growth | 0.47% | — | — | |
| 30 | IWF | Ishares Russell 1000 Growth | ETF-Other | 0.42% | — | -1.72% | |
| 31 | GOOGL | Alphabet Inc-cl A | Stock-Comm Services | 0.41% | — | — | |
| 32 | BRK-A | Berkshire Hathaway Inc-cl A | Stock-Other | 0.32% | — | — | |
| 33 | VOO | Vanguard S&p 500 ETF | ETF-Large Cap & Growth | 0.29% | — | -13.55% | |
| 34 | IWD | Ishares Russell 1000 Value E | ETF-Other | 0.25% | — | — | |
| 35 | PEP | Pepsico Inc | Stock-Consumer Staples | 0.23% | — | +5.56% | |
| 36 | IVV | Ishares Core S&p 500 ETF | ETF-Large Cap & Growth | 0.21% | — | +47.09% | |
| 37 | SDG | Ish Msci Glob Sust Deve Goal | ETF-Other | 0.19% | — | — | |
| 38 | RSP | Invesco S&p 500 Equal Weight | ETF-Large Cap & Growth | 0.17% | — | +64.22% | |
| 39 | IJR | Ishares Core S&p Small-cap E | ETF-Small Cap | 0.11% | — | — | |
| 40 | MRK | Merck & Co. Inc. | Stock-Healthcare | 0.11% | — | +9.28% | |
| 41 | MCD | Mcdonald's CORP | Stock-Consumer Disc | 0.11% | — | — | |
| 42 | KO | Coca-cola Co/the | Stock-Consumer Staples | 0.11% | — | — | |
| 43 | PHYS | Sprott Physical Gold Trust | Stock-Other | 0.10% | — | — | |
| 44 | ✓ | Enterprise Bancorp Inc Mass | Stock-Other | 0.10% | — | — | |
| 45 | XOM | Exxon Mobil CORP | Stock-Energy | 0.10% | — | +18.71% | |
| 46 | IWR | Ishares Russell Mid-cap ETF | ETF-Other | 0.09% | — | — | |
| 47 | JNJ | Johnson & Johnson | Stock-Healthcare | 0.09% | — | +18.70% | |
| 48 | CSCO | Cisco Systems Inc | Stock-Tech | 0.08% | — | — | |
| 49 | IVW | Ishares S&p 500 Growth ETF | ETF-Large Cap & Growth | 0.08% | — | — | |
| 50 | DIS | Walt Disney Co/the | Stock-Comm Services | 0.08% | — | +2.53% |
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.
Portfolio Performance
Performance for Q3 2026
+2.9%
Performance Last 4 Quarters
+18.9%
- Stdev
- +11.2%
- Beta
- +0.83
- Alpha
- +1.5%
- Max Drawdown
- -6.5%
- Annualized Perf
- +19%
- Batting Avg vs S&P
- +44.4%
- Sortino
- +3.27
- Stutzer
- +0.47
- Treynor
- +0.22
- Sterling
- +1.28
- Calmar
- +2.94
- Information Ratio
- -0.5
- Tracking Error
- +3.8%
- Stdev Down
- +5.5%
- Winning Months %
- +75%
- Losing Months %
- +25%
- Best 12 Months
- +34.1%
- Worst 12 Months
- +7%
- Efficiency Ratio
- +0.66
- Sharpe
- +1.62
- Stdev Sectors
- +7.9%
- Skewness
- -0.12
- Kurtosis
- -0.1
- Upside Potential
- +4.78
Reported value over time
Sector allocation
Sector allocation over time
Quarterly history
| Period | Holdings | Total value | Stability | Top holdings | |
|---|---|---|---|---|---|
| 2023 Q3 | 335 | $826.8M | 0 | ||
| 2023 Q2 | 391 | $849.9M | 0 | ||
| 2023 Q1 | 249 | $777.2M | 0 | ||
| 2022 Q4 | 77 | $713.9M | 0 | ||
| 2022 Q3 | 105 | $796.2M | 0 | ||
| 2022 Q2 | 106 | $810.7M | 0 | ||
| 2022 Q1 | 95 | $829.0M | 0 | ||
| 2021 Q4 | 94 | $886.7M | 0 | ||
| 2021 Q3 | 92 | $802.3M | 0 | ||
| 2021 Q2 | 96 | $801.1M | 96 | ||
| 2021 Q1 | 92 | $740.1M | 9 | ||
| 2020 Q4 | 95 | $712.9M | 23 | ||
| 2020 Q3 | 90 | $609.1M | 10 | ||
| 2020 Q2 | 88 | $553.1M | 33 | ||
| 2020 Q1 | 84 | $515.9M | 34 | ||
| 2019 Q4 | 95 | $711.8M | 20 | ||
| 2019 Q3 | 96 | $677.4M | 5 | ||
| 2019 Q2 | 98 | $660.9M | 15 | ||
| 2019 Q1 | 97 | $618.6M | 14 | ||
| 2018 Q4 | 93 | $553.1M | 13 | ||
| 2018 Q3 | 96 | $617.5M | 5 | ||
| 2018 Q2 | 97 | $597.2M | 17 | ||
| 2018 Q1 | 98 | $587.5M | 5 | ||
| 2017 Q4 | 99 | $597.9M | 14 | ||
| 2017 Q3 | 93 | $570.3M | 7 | ||
| 2017 Q2 | 106 | $558.2M | 10 | ||
| 2017 Q1 | 106 | $550.4M | 16 | ||
| 2016 Q4 | 108 | $531.7M | 41 | ||
| 2016 Q3 | 114 | $457.9M | 24 | ||
| 2016 Q2 | 90 | $428.4M | 14 | ||
| 2016 Q1 | 87 | $410.5M | 8 | ||
| 2015 Q4 | 86 | $399.6M | 26 | ||
| 2015 Q3 | 87 | $391.2M | 25 | ||
| 2015 Q2 | 90 | $385.2M | 17 | ||
| 2015 Q1 | 89 | $408.6M | 10 | ||
| 2014 Q4 | 92 | $421.9M | 26 | ||
| 2014 Q3 | 92 | $412.2M | 8 | ||
| 2014 Q2 | 89 | $418.4M | 19 | ||
| 2014 Q1 | 85 | $400.7M | 15 | ||
| 2013 Q4 | 91 | $376.4M | 21 | ||
| 2013 Q3 | 88 | $345.0M | 23 | ||
| 2013 Q2 | 79 | $336.6M | 0 |
Holding changes this quarter
| # | Ticker | Issuer | Weight Change | Shares Change | Action |
|---|
Filing History
FAQ
What is Foster Dykema Cabot & Co Inc/ma and what type of investor is it?
Foster Dykema Cabot & Co Inc/ma 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 (2023-09-30), the firm manages a tracked equity portfolio valued at approximately $826.8M, spread across 335 disclosed positions.
What are Foster Dykema Cabot & Co Inc/ma's largest equity positions?
Based on the latest 13F filing, Foster Dykema Cabot & Co Inc/ma's top holdings by market value are:
1. Ss Spdr S&p 500 ETF Trust-us (SPY) — $182.1M (22.0%)
2. Jpmorgan Ultra-short Income (JPST) — $88.2M (10.7%)
3. Ishares Ultra Short Duration (ICSH) — $34.8M (4.2%)
4. Amazon.com Inc (AMZN) — $33.0M (4.0%)
5. Microsoft CORP (MSFT) — $31.2M (3.8%)
What changes did Foster Dykema Cabot & Co Inc/ma make in its most recent portfolio filing?
No notable portfolio changes were recorded for Foster Dykema Cabot & Co Inc/ma in the most recent quarter. Holdings appear to have remained relatively stable.
What sectors does Foster Dykema Cabot & Co Inc/ma focus on?
Foster Dykema Cabot & Co Inc/ma is concentrated in the following sectors based on its current disclosed equity portfolio:
• Information Technology: 24.1%
• Health Care: 19.6%
• Industrials: 15.0%
• Consumer Discretionary: 13.1%
• Financials: 11.2%
• Consumer Staples: 9.3%
Investment Profile
Foster Dykema Cabot & Co Inc/ma returned an annualized 19.0% over the trailing 36 months — outperforming the S&P 500 by 1.5 points — based on a reconstructed track record of its disclosed 13F positions, with a beta of 0.83 (less volatile than the market) and a 44% quarterly batting average against the index.
Its portfolio is broadly diversified and long-term-holding.
It has added to its LLY position over the past two quarters (+$10.4M, now $29.0M), while trimming TMO over the same stretch (-$2.9M, still holding $21.6M).
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