FOSTER DYKEMA CABOT & PARTNERS, LLC
SEC Form 13F institutional filer · CIK 0002011882
13F-HR · 213 reported holdings · 2026-03-31
Foster Dykema Cabot & Partners, LLC is a registered investment advisor.
Reported long-US-equity value
$1.09B
Top-10 concentration
61.9%
FOSTER DYKEMA CABOT & PARTNERS, LLC — $1.09B AUM allocation strategy
FOSTER DYKEMA CABOT & PARTNERS, LLC files SEC Form 13F and reports $1.09B of long US equity value across 213 reported holdings for 2026-03-31.
Its largest sector bet is Industrials 15.8%, followed by Information Technology 14.9% and Financials 11.7%.
The top 10 holdings account for 62% of reported value — a conviction-weighted book concentrated in its best ideas. The sector and industry splits below are of the same reported value. Track quarter-over-quarter adds, trims, new positions and exits below — sourced from SEC 13F filings, public domain.
FOSTER DYKEMA CABOT & PARTNERS, LLC — latest SEC 13F insights
Reported long-US-equity value (13F AUM)
$1.09B
total across 213 reported holdings · 2026-03-31 · excludes shorts, cash, non-US
Top-10 concentration
62% of value
higher = narrower conviction; lower = spread / hedging
Biggest adds (shares)
+$AVGO +3K sh · −$1.72M+$GS +877 sh · −$476K+$GOOG +769 sh · −$3.96M
Biggest trims (shares)
−$APH −8.83K sh · −$5.61M−$IVV −4.55K sh · −$248K−$KKR −3.78K sh · −$489K
Added from nil (new positions)
None this quarter
Exited to nil (held last quarter, gone now)
$MSI ($390K last qtr)$SNPS ($341K last qtr)$NOW ($311K last qtr)$SPYM ($155K last qtr)$DUK ($60K last qtr)
Sector allocation (share of reported value)
each slice is a share of the reported long-US-equity value — smaller sectors and the rest of the book roll into “Other holdings”
Qtr shift = share-point change vs the prior quarter's filing — first period tracked for this filer; the column fills in with the next quarterly refresh.
Industry allocation (share of reported value)
- Electronic Components5.8%—
- Construction & Engineering5.1%—
- Broadline Retail4.5%—
- Interactive Media & Services4.4%—
- Consumer Staples Merchandise Retail4.1%—
- Systems Software3.9%—
- Diversified Banks3.1%—
- Consumer Finance3.1%—
- Other holdings66.0%—
the finer GICS cut of the same book — same denominator — smaller industries roll into “Other holdings”
Qtr shift = share-point change vs the prior quarter's filing — first period tracked for this filer; the column fills in with the next quarterly refresh.
Top S&P 500 holdings
9 of 9 rows · sorted by Value ↓
| Ticker | Holding | Shares | Value | Δ QoQ | Weight |
|---|---|---|---|---|---|
| $APH | Amphenol Corporation | 501K | $63.5M | -8.83K | 5.8% |
| $PWR | Quanta Services Inc | 100K | $55.1M | -1.58K | 5.0% |
| $AMZN | Amazon.com Inc | 236K | $49.2M | -817 | 4.5% |
| $GOOG | Alphabet Inc. Class C Capital Stock | 165K | $47.5M | +769 | 4.3% |
| $COST | Costco Wholesale Corporation | 45.1K | $44.9M | -148 | 4.1% |
| $MSFT | Microsoft Corporation | 114K | $42.2M | +472 | 3.9% |
| $JPM | JP Morgan Chase & Co | 118K | $34.9M | -1.24K | 3.2% |
| $AXP | American Express Company | 114K | $34.4M | +380 | 3.1% |
| $NVDA | NVIDIA Corporation | 189K | $33M | -2.75K | 3.0% |
…and 204 more holdings in the full 13F filing (top positions only shown).
SEC Form 13F data sets · public domain · 45-day filing lag · >$100M AUM managers · as reported
← All 13F filers·← QuantOrb.pro
How to read Δ QoQ — the five insight categories, and the caveats
The categories. Analysts, quants and retail traders look past total portfolio value to isolate actionable signals. Five categories matter.
Conviction & concentration shifts
New positions vs complete exits — a brand-new stock signals high conviction; a full liquidation suggests a broken thesis or tax-loss harvesting. Aggressive sizing — look at share count, not dollars: a 20% share increase during a drawdown is strong dip-buying. Concentration — a narrowing top-5/10 means conviction; spreading capital across more names means hedging.
Sector & macro allocation rotations
Aggregating Δ QoQ moves across sectors shows where smart money is leaning in or sneaking out — rotating out of growth into defensives or energy, for example. The fund's total long equity exposure quarter-over-quarter is a proxy for overall institutional risk appetite.
Crowding & smart-money consensus
When several managers initiate or expand the same stock in the same quarter, that is institutional consensus. Contrarian reads: top pickers buying hard into a beaten-down name the market is selling.
Derivative & option overlays
Reported call/put changes indicate whether managers are adding downside hedges or leveraging upside exposure. Note: a long increase may be half of a market-neutral pair trade.
Who reads this
| Retail "cloners" | High-conviction ideas to replicate ~45 days after quarter-end. |
| Corporate IR | Which funds bought or dumped the stock, before the next call. |
| Quant / algo traders | Cross-sectional factor inputs: flow, momentum, ownership. |
Four caveats before you trade on it
- 45-day lag — holdings are quarter-end; positions may already be closed.
- Long-only — 13Fs miss shorts, pair trades and cash.
- No non-US / fixed income — the picture is US equities plus options.
- Corporate actions — splits and spinoffs distort raw share deltas.
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