CIK: 0002011882
Total reported value
$1.6B
Reporting period: 2026-03-31 · Number of holdings: 323
FOSTER DYKEMA CABOT & PARTNERS, LLC disclosed 323 holdings in its latest 13F filing for the period ending 2026-03-31, with total reported value of $1.6B and a quarterly turnover rate of 8.1%.
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Foster Dykema Cabot & Partners, LLC's disclosed holdings carry a Herfindahl concentration index of 0.083 — mathematically equivalent to about 12 equally-sized positions, well below its 323 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 5.08), with a handful of outsized bets alongside many smaller positions.
Recent activity leans toward adding more aggressively to already-large existing positions than to newly initiated ones (a 2.5 percentage-point tilt) — a pattern consistent with a momentum-following approach.
Sector classification currently covers about 48% 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.
Add ICSH
+3.2% $6.7M
Add PWR
-1.6% $12.1M
Trim MSFT
+0.4% -$12.7M
Add COST
-0.3% $5.9M
Trim AXP
+0.3% -$7.5M
Add NOC
-1.9% $4.4M
Showing top 200 holdings (of 323 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 | 17.30% | -0.26% | -0.19% | |
| 2 | JPST | Jpmorgan Ultra-short Income | ETF-Other | 15.32% | +0.08% | -2.57% | |
| 3 | ICSH | Ishares Ultra Short Duration | ETF-Other | 13.38% | +0.87% | +3.20% | |
| 4 | APH | Amphenol Corp-cl A | Stock-Tech | 4.04% | -0.21% | -1.73% | |
| 5 | PWR | Quanta Services INC | Stock-Industrials | 3.50% | +0.86% | -1.55% | |
| 6 | AMZN | Amazon.com INC | Stock-Consumer Disc | 3.13% | -0.24% | -0.34% | |
| 7 | GOOGL | Alphabet Inc-cl A | Stock-Comm Services | 3.02% | -0.14% | +0.47% | |
| 8 | COST | Costco Wholesale CORP | Stock-Consumer Staples | 2.86% | +0.46% | -0.33% | |
| 9 | MSFT | Microsoft CORP | Stock-Tech | 2.68% | -0.69% | +0.42% | |
| 10 | JPM | Jpmorgan Chase & Co | Stock-Financials | 2.22% | -0.15% | -1.04% | |
| 11 | AXP | American Express Co | Stock-Financials | 2.19% | -0.39% | +0.34% | |
| 12 | NVDA | Nvidia CORP | Stock-Tech | 2.10% | -0.10% | -1.44% | |
| 13 | ETN | Eaton Corporation plc | Stock-Industrials | 2.08% | +0.28% | -0.68% | |
| 14 | GS | Goldman Sachs Group INC | Stock-Financials | 2.03% | +0.04% | +2.38% | |
| 15 | WM | Waste Management INC | Stock-Industrials | 1.88% | +0.14% | -0.29% | |
| 16 | NOC | Northrop Grumman CORP | Stock-Industrials | 1.87% | +0.33% | -1.88% | |
| 17 | BRK-B | Berkshire Hathaway Inc-cl B | Stock-Other | 1.70% | -0.04% | -0.51% | |
| 18 | LLY | Eli Lilly & Co | Stock-Healthcare | 1.64% | -0.22% | -0.16% | |
| 19 | VRTX | Vertex Pharmaceuticals INC | Stock-Healthcare | 1.64% | +0.01% | -0.95% | |
| 20 | CTAS | Cintas CORP | Stock-Industrials | 1.63% | -0.13% | -0.45% | |
| 21 | IEFA | Ishares Core Msci Eafe ETF | ETF-Other | 1.58% | — | -1.60% | |
| 22 | AAPL | Apple INC | Stock-Tech | 1.52% | -0.08% | -1.80% | |
| 23 | AVGO | Broadcom INC | Stock-Tech | 1.48% | -0.06% | +4.14% | |
| 24 | TMO | Thermo Fisher Scientific INC | Stock-Healthcare | 1.41% | -0.20% | -0.30% | |
| 25 | VTI | Vanguard Total Stock Mkt ETF | ETF-Other | 1.09% | -0.02% | -0.73% | |
| 26 | GOOG | Alphabet Inc-cl C | Stock-Comm Services | 0.57% | -0.04% | -2.18% | |
| 27 | XLK | Ss Technology Select Sector | ETF-Tech | 0.46% | -0.02% | -0.81% | |
| 28 | INDB | Independent Bank Corp/ma | Stock-Other | 0.40% | +0.03% | — | |
| 29 | SPYX | Ss Spdr S&p 500 Foss Fl ETF | ETF-Large Cap & Growth | 0.34% | -0.01% | — | |
| 30 | VOO | Vanguard S&p 500 ETF | ETF-Large Cap & Growth | 0.31% | — | — | |
| 31 | IWF | Ishares Russell 1000 Growth | ETF-Other | 0.29% | -0.02% | -0.85% | |
| 32 | PG | Procter & Gamble Co/the | Stock-Consumer Staples | 0.25% | — | -1.50% | |
| 33 | IVV | Ishares Core S&p 500 ETF | ETF-Large Cap & Growth | 0.18% | — | -0.35% | |
| 34 | IWD | Ishares Russell 1000 Value E | ETF-Other | 0.13% | — | -1.21% | |
| 35 | PHYS | Sprott Physical Gold Trust | Stock-Other | 0.13% | — | — | |
| 36 | WMT | Walmart INC | Stock-Consumer Staples | 0.13% | +0.02% | — | |
| 37 | SDG | Ish Msci Glob Sust Deve Goal | ETF-Other | 0.11% | — | — | |
| 38 | VEU | Vanguard Ftse All-world Ex-u | ETF-Other | 0.09% | — | — | |
| 39 | V | Visa Inc-class A Shares | Stock-Financials | 0.09% | -0.01% | — | |
| 40 | PEP | Pepsico INC | Stock-Consumer Staples | 0.08% | — | -6.15% | |
| 41 | MCD | Mcdonald's CORP | Stock-Consumer Disc | 0.08% | — | — | |
| 42 | JNJ | Johnson & Johnson | Stock-Healthcare | 0.08% | +0.01% | — | |
| 43 | SPGI | S&p Global INC | Stock-Financials | 0.08% | -0.01% | — | |
| 44 | PLD | Prologis INC | Stock-Real Estate | 0.07% | — | — | |
| 45 | CSCO | Cisco Systems INC | Stock-Tech | 0.07% | — | +2.77% | |
| 46 | MS | Morgan Stanley | Stock-Financials | 0.07% | — | — | |
| 47 | MRK | Merck & Co. INC. | Stock-Healthcare | 0.07% | — | -2.64% | |
| 48 | CAT | Caterpillar INC | Stock-Industrials | 0.06% | +0.01% | — | |
| 49 | XOM | Exxon Mobil CORP | Stock-Energy | 0.06% | +0.02% | — | |
| 50 | QQQ | Invesco Qqq Trust Series 1 | ETF-Tech | 0.06% | — | — |
Performance for Q3 2026
+0.9%
Performance Last 4 Quarters
+16.5%
Based on 73% of reported portfolio value with available pricing
| Period | Holdings | Total value | Stability | Top holdings |
|---|---|---|---|---|
| 2026-03-31 | 323 | $1.6B | 8 | |
| 2025-12-31 | 330 | $1.6B | 25 | |
| 2025-09-30 | 421 | $1.5B | 22 | |
| 2025-06-30 | 343 | $1.4B | 0 | |
| 2025-03-31 | 342 | $1.2B | 0 | |
| 2024-12-31 | 379 | $1.3B | 0 | |
| 2024-09-30 | 520 | $1.2B | 0 | |
| 2024-06-30 | 332 | $1.1B | 0 | |
| 2024-03-31 | 320 | $1.1B | 0 | |
| 2023-12-31 | 317 | $943.9M | 0 |
Foster Dykema Cabot & Partners, LLC's most significant position changes for 2026-03-31: Sold out: Motorola Solutions INC (MSI); Sold out: Synopsys INC (SNPS); Sold out: Servicenow INC (NOW); Add: Ishares Ultra Short Duration (ICSH) — shares +3.20%; Trim: Quanta Services INC (PWR) — shares -1.55%.
| # | Ticker | Issuer | Weight Change | Shares Change | Action |
|---|---|---|---|---|---|
| 1 | ICSH | Ishares Ultra Short Duration | +0.9% | +3.20% | Add |
| 2 | PWR | Quanta Services INC | +0.9% | -1.55% | Trim |
| 3 | COST | Costco Wholesale CORP | +0.5% | -0.33% | Trim |
| 4 | NOC | Northrop Grumman CORP | +0.3% | -1.88% | Trim |
| 5 | ETN | Eaton Corporation plc | +0.3% | -0.68% | Trim |
| 6 | WM | Waste Management INC | +0.1% | -0.29% | Trim |
| 7 | JPST | Jpmorgan Ultra-short Income | +0.1% | -2.57% | Trim |
| 8 | GS | Goldman Sachs Group INC | 0% | +2.38% | Add |
| 9 | INDB | Independent Bank Corp/ma | 0% | — | Unchanged |
| 10 | XOM | Exxon Mobil CORP | 0% | — | Unchanged |
| 11 | WMT | Walmart INC | 0% | — | Unchanged |
| 12 | VRTX | Vertex Pharmaceuticals INC | 0% | -0.95% | Trim |
| 13 | JNJ | Johnson & Johnson | 0% | — | Unchanged |
| 14 | CAT | Caterpillar INC | 0% | — | Unchanged |
| 15 | LMT | Lockheed Martin CORP | 0% | — | Unchanged |
| 16 | VOO | Vanguard S&p 500 ETF | — | — | Unchanged |
| 17 | SPYX | Ss Spdr S&p 500 Foss Fl ETF | 0% | — | Unchanged |
| 18 | SPGI | S&p Global INC | 0% | — | Unchanged |
| 19 | ADP | Automatic Data Processing | 0% | -6.02% | Trim |
| 20 | V | Visa Inc-class A Shares | 0% | — | Unchanged |
| 21 | ABT | Abbott Laboratories | 0% | -6.24% | Trim |
| 22 | IVW | Ishares S&p 500 Growth ETF | 0% | -10.52% | Trim |
| 23 | TSLA | Tesla INC | 0% | -9.34% | Trim |
| 24 | VTI | Vanguard Total Stock Mkt ETF | 0% | -0.73% | Trim |
| 25 | XLK | Ss Technology Select Sector | 0% | -0.81% | Trim |
| 26 | IWF | Ishares Russell 1000 Growth | 0% | -0.85% | Trim |
| 27 | META | Meta Platforms Inc-class A | 0% | -87.98% | Trim |
| 28 | PANW | Palo Alto Networks INC | 0% | -96.32% | Trim |
| 29 | ACN | Accenture plc | 0% | -7.74% | Trim |
| 30 | MTB | M & T Bank CORP | 0% | -51.62% | Trim |
| 31 | KKR | Kkr & Co INC | 0% | -94.98% | Trim |
| 32 | BRK-B | Berkshire Hathaway Inc-cl B | 0% | -0.51% | Trim |
| 33 | GOOG | Alphabet Inc-cl C | 0% | -2.18% | Trim |
| 34 | LOW | Lowe's Cos INC | 0% | -75.80% | Trim |
| 35 | AVGO | Broadcom INC | -0.1% | +4.14% | Add |
| 36 | AAPL | Apple INC | -0.1% | -1.80% | Trim |
| 37 | NVDA | Nvidia CORP | -0.1% | -1.44% | Trim |
| 38 | CTAS | Cintas CORP | -0.1% | -0.45% | Trim |
| 39 | GOOGL | Alphabet Inc-cl A | -0.1% | +0.47% | Add |
| 40 | JPM | Jpmorgan Chase & Co | -0.2% | -1.04% | Trim |
| 41 | TMO | Thermo Fisher Scientific INC | -0.2% | -0.30% | Trim |
| 42 | APH | Amphenol Corp-cl A | -0.2% | -1.73% | Trim |
| 43 | LLY | Eli Lilly & Co | -0.2% | -0.16% | Trim |
| 44 | AMZN | Amazon.com INC | -0.2% | -0.34% | Trim |
| 45 | SPY | Ss Spdr S&p 500 ETF Trust-us | -0.3% | -0.19% | Trim |
| 46 | AXP | American Express Co | -0.4% | +0.34% | Add |
| 47 | MSFT | Microsoft CORP | -0.7% | +0.42% | Add |
| 48 | MSI | Motorola Solutions INC | — | EXIT | Sold out |
| 49 | SNPS | Synopsys INC | — | EXIT | Sold out |
| 50 | NOW | Servicenow INC | — | EXIT | Sold out |
| Period | Filed | Type | EDGAR |
|---|---|---|---|
| 2026-03-31 | 2026-05-14 | 13F-HR | View on EDGAR |
| 2025-12-31 | 2026-02-12 | 13F-HR | View on EDGAR |
| 2025-09-30 | 2025-11-12 | 13F-HR | View on EDGAR |
| 2025-06-30 | 2025-08-12 | 13F-HR | View on EDGAR |
| 2025-03-31 | 2025-05-09 | 13F-HR | View on EDGAR |
| 2024-12-31 | 2025-02-13 | 13F-HR | View on EDGAR |
| 2024-09-30 | 2024-11-12 | 13F-HR | View on EDGAR |
| 2024-06-30 | 2024-08-14 | 13F-HR | View on EDGAR |
| 2024-03-31 | 2024-05-10 | 13F-HR | View on EDGAR |
| 2023-12-31 | 2024-02-14 | 13F-HR | View on EDGAR |
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