MIDDLETON & CO INC/MA
SEC Form 13F institutional filer · CIK 0000919497
13F-HR · 121 reported holdings · 2026-03-31
Middleton & Co Inc/MA is a registered investment advisor.
Reported long-US-equity value
$0.80B
Top-10 concentration
44.5%
MIDDLETON & CO INC/MA — $804M AUM allocation strategy
MIDDLETON & CO INC/MA files SEC Form 13F and reports $804M of long US equity value across 121 reported holdings for 2026-03-31.
Its largest sector bet is Information Technology 18.3%, followed by Consumer Discretionary 8.7% and Communication Services 7.4%.
The top 10 holdings account for 45% of reported value — a broadly spread portfolio. 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.
MIDDLETON & CO INC/MA — latest SEC 13F insights
Reported long-US-equity value (13F AUM)
$804M
total across 121 reported holdings · 2026-03-31 · excludes shorts, cash, non-US
Top-10 concentration
45% of value
higher = narrower conviction; lower = spread / hedging
Biggest adds (shares)
+$UBER +23.5K sh · +$1.62M+$MKC +13.1K sh · +$241K+$NOW +10.9K sh · −$3.67M
Biggest trims (shares)
−$FTV −37.5K sh · −$2.06M−$MRK −23.2K sh · −$607K−$GOOG −13.9K sh · −$9.64M
Exited to nil (held last quarter, gone now)
$KKR ($334K last qtr)$BX ($231K last qtr)$WFC ($215K last qtr)$ANET ($210K 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)
- Interactive Media & Services7.4%—
- Technology Hardware, Storage & Peripherals7.1%—
- Semiconductors6.5%—
- Broadline Retail6.3%—
- Systems Software4.6%—
- Pharmaceuticals3.3%—
- Consumer Staples Merchandise Retail3.0%—
- Transaction & Payment Processing Services2.6%—
- Other holdings59.0%—
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 |
|---|---|---|---|---|---|
| $GOOG | Alphabet Inc. Class C Capital Stock | 208K | $59.7M | -13.9K | 7.4% |
| $AAPL | Apple Inc | 224K | $56.9M | -3.34K | 7.1% |
| $AMZN | Amazon.com Inc | 245K | $51.1M | -1.36K | 6.4% |
| $AVGO | Broadcom Inc | 129K | $39.8M | -679 | 5.0% |
| $COST | Costco Wholesale Corporation | 24.5K | $24.4M | -149 | 3.0% |
| $V | Visa Inc | 70.7K | $21.4M | -426 | 2.7% |
| $MSFT | Microsoft Corporation | 57.1K | $21.2M | -522 | 2.6% |
| $JPM | JP Morgan Chase & Co | 71.6K | $21.1M | -977 | 2.6% |
| $XOM | ExxonMobil Holdings Corporation | 116K | $19.7M | +1.43K | 2.4% |
…and 112 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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