Institutional Manager · CIK 0002011882
FOSTER DYKEMA CABOT & PARTNERS, LLC
WALTHAM, MA · File #028-23799
Latest AUM
$1.63B
Positions
330
Top-10 Concentration
68.9%
Filings
8
Portfolio Value Over Time
2024-03
2024-06
2024-09
2024-12
2025-03
2025-06
2025-09
2025-12
Biggest QoQ Changes
Ranked by conviction flow (share change × current price) so mark-to-market moves don't dominate. Price effect column shows how much of the $ change was just the stock moving.
| Action | Issuer | Ticker / CUSIP | Δ Shares | Flow ($) | Price Effect |
|---|---|---|---|---|---|
| ADD | ISHARES TR | 46434V878 | +1,846,242 | +$93.4M | -$370,419 |
| ADD | J P MORGAN EXCHANGE TRADED F | 46641Q837 | +1,016,542 | +$51.6M | +$152,624 |
| NEW | GOLDMAN SACHS GROUP INC | GSCE | +36,889 | +$32.4M | $0 |
| REDUCE | MOTOROLA SOLUTIONS INC | MSI | -68,621 | -$27.9M | -$3.6M |
| REDUCE | SYNOPSYS INC | SNPS | -54,330 | -$25.5M | -$1.3M |
| ADD | BROADCOM INC | AVGO | +68,375 | +$23.7M | +$65,068 |
| REDUCE | KKR & CO INC | KKRT | -185,314 | -$23.6M | -$474,366 |
| REDUCE | LOWES COS INC | 548661107 | -82,459 | -$19.9M | -$882,677 |
| REDUCE | AMPHENOL CORP NEW | 032095101 | -91,127 | -$12.3M | +$6.9M |
| REDUCE | QUANTA SVCS INC | 74762E102 | -14,277 | -$6.0M | +$891,565 |
Sector Allocation
Filing History
- 13F HOLDINGS REPORTQ/E Dec 2025330 pos · $1.63B
- 13F HOLDINGS REPORTQ/E Sep 2025421 pos · $1.52B
- 13F HOLDINGS REPORTQ/E Jun 2025343 pos · $1.42B
- 13F HOLDINGS REPORTQ/E Mar 2025342 pos · $1.25B
- 13F HOLDINGS REPORTQ/E Dec 2024379 pos · $1.28B
- 13F HOLDINGS REPORTQ/E Sep 2024520 pos · $1.19B
- 13F HOLDINGS REPORTQ/E Jun 2024332 pos · $1.12B
- 13F HOLDINGS REPORTQ/E Mar 2024320 pos · $1.07B
Top 20 Holdings — Dec 2025
| # | Issuer | Ticker | Shares | Value | % of Portfolio |
|---|---|---|---|---|---|
| 1 | SPDR S&P 500 ETF TR | SPY | 417,814 | $285.7M | 18.04% |
| 2 | J P MORGAN EXCHANGE TRADED F | 46641Q837 | 4,884,480 | $248.0M | 15.65% |
| 3 | ISHARES TR | 46434V878 | 4,025,851 | $203.6M | 12.85% |
| 4 | AMPHENOL CORP NEW | 032095101 | 510,294 | $69.1M | 4.36% |
| 5 | MICROSOFT CORP | MSFT | 113,455 | $54.9M | 3.46% |
| 6 | AMAZON COM INC | AMZN | 237,246 | $54.8M | 3.46% |
| 7 | ALPHABET INC | GOOG | 164,357 | $51.4M | 3.25% |
| 8 | QUANTA SVCS INC | 74762E102 | 101,893 | $43.0M | 2.71% |
| 9 | AMERICAN EXPRESS CO | AXP | 113,369 | $41.9M | 2.65% |
| 10 | COSTCO WHSL CORP NEW | 22160K105 | 45,237 | $39.0M | 2.46% |
| 11 | JPMORGAN CHASE & CO. | VYLD | 119,718 | $38.6M | 2.43% |
| 12 | NVIDIA CORPORATION | NVDA | 191,832 | $35.8M | 2.26% |
| 13 | GOLDMAN SACHS GROUP INC | GSCE | 36,889 | $32.4M | 2.05% |
| 14 | ELI LILLY & CO | LLY | 28,117 | $30.2M | 1.91% |
| 15 | EATON CORP PLC | ETN | 92,060 | $29.3M | 1.85% |
| 16 | CINTAS CORP | CTAS | 152,324 | $28.6M | 1.81% |
| 17 | WASTE MGMT INC DEL | 94106L109 | 128,686 | $28.3M | 1.78% |
| 18 | BERKSHIRE HATHAWAY INC DEL | BRK-A | 56,186 | $28.2M | 1.78% |
| 19 | VERTEX PHARMACEUTICALS INC | VRTX | 58,344 | $26.5M | 1.67% |
| 20 | THERMO FISHER SCIENTIFIC INC | TMO | 45,240 | $26.2M | 1.66% |