Skip to main content

FOSTER DYKEMA CABOT & PARTNERS, LLC

Location
WALTHAM, MA
Portfolio Value
Mid $1,029,355,671
Diversification
Diversified
Filing Date
Global Rank
#1,731 / 8,623 ▲ 6 · as of Mar 2026
Top Industry
Electronic Components 8.5%
3Y Alpha vs SPY
0.0%
Period ended 4 months ago
Filed May 14, 2026 · 3mo
10 quarters · since Dec 2023

Clone Performance

Feb 2024–Jul 2026 · vs SPY

Hypothetical growth of buying every stock this filer reported holding, rebalancing on each filing and indexed to the same start. Option positions cannot be bought this way and are left out.

Cloned portfolio
+50.7%
SPY
+50.3%
Annualised alpha
+0.1%
Max drawdown
−17.7%

Estimate. 13F holdings are quarter-lagged, so the clone rebalances about 45 days after each period end — when the filing becomes public — and it excludes option and short positions. It tracks 100% of reported value on average across 10 quarters. Past performance does not predict future results.

Portfolio Concentration

251 tracked positions · as of Mar 31, 2026 · Δ vs Dec 31, 2025
Top Position
26.3%
−0.0 pts
Top 5
47.2%
−0.5 pts
Top 10
65.6%
−0.4 pts
HHI
951
Dec 2023 → Mar 2026 · range 870 – 1,218
Diversified−3

Portfolio Trend

10 quarters · across all stocks

Sector Breakdown

As of Mar 31, 2026
Sector % Portfolio Value
Unclassified 26.5% $272,698,221
Technology 18.7% $192,033,103
Industrials 17.4% $178,637,305
Financial Services 14.0% $143,684,643
Healthcare 7.8% $80,643,598
Consumer Defensive 5.3% $54,393,883
Consumer Cyclical 5.2% $53,481,553
Communication Services 4.7% $48,587,152
Energy 0.2% $1,866,868
Real Estate 0.1% $1,194,914
Utilities 0.1% $1,176,607
Basic Materials 0.1% $957,824

Last Quarter's Activity

Export CSV
Mar 31, 2026 vs Dec 31, 2025

Added To

Positions the filer increased
7 positions
Ticker Δ Shares Shares Value Open

Trimmed

Positions the filer reduced
25 positions
Ticker Δ Shares Shares Value Open

New Positions

Positions the filer opened this quarter
2 positions
Ticker Shares Value Open

Sold Out

Positions the filer fully exited
7 positions
Ticker Shares Value Open

Portfolio Positions

Export CSV View 13F filing
251 tracked positions · $1,029,355,671 total · filing declares 323 positions · $1,571,808,547 · as of Mar 31, 2026
Showing 1–50 of 251 positions by value · page 1 of 6
Ticker Company Shares Value (USD) % of Portfolio History

Covers the securities this platform tracks: U.S.-listed common stock and the put/call positions reported on it. A 13F can also report security types outside that coverage — preferred shares, bonds, warrants, untracked share classes — so the filing's own declared total can exceed the figures above. The source filing is linked at the top of this table.