NORTHSTAR ASSET MANAGEMENT INC
SEC Form 13F institutional filer · CIK 0000869304
13F-HR · 58 reported holdings · 2026-03-31
Reported long-US-equity value
$0.23B
Top-10 concentration
60.7%
NORTHSTAR ASSET MANAGEMENT INC — $231M AUM allocation strategy
NORTHSTAR ASSET MANAGEMENT INC files SEC Form 13F and reports $231M of long US equity value across 58 reported holdings for 2026-03-31.
Its largest sector bet is Industrials 20.3%, followed by Information Technology 18.7% and Consumer Discretionary 10.0%.
The top 10 holdings account for 61% 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.
NORTHSTAR ASSET MANAGEMENT INC — latest SEC 13F insights
Reported long-US-equity value (13F AUM)
$231M
total across 58 reported holdings · 2026-03-31 · excludes shorts, cash, non-US
Top-10 concentration
61% of value
higher = narrower conviction; lower = spread / hedging
Biggest adds (shares)
+$PANW +10K sh · +$1.53M+$AMD +6.44K sh · +$1.23M+$VRSK +3.96K sh · +$238K
Biggest trims (shares)
−$DLR −34.3K sh · −$4.72M−$TJX −24.5K sh · −$3.21M−$VLTO −19.4K sh · −$2.66M
Added from nil (new positions)
None this quarter
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 & Services9.3%—
- Health Care Equipment8.2%—
- Technology Hardware, Storage & Peripherals7.7%—
- Systems Software6.9%—
- Consumer Staples Merchandise Retail6.7%—
- Apparel Retail6.3%—
- Industrial Gases5.7%—
- Human Resource & Employment Services4.5%—
- Other holdings44.7%—
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
10 of 10 rows · sorted by Value ↓
| Ticker | Holding | Shares | Value | Δ QoQ | Weight |
|---|---|---|---|---|---|
| $GOOG | Alphabet Inc. Class C Capital Stock | 75K | $21.6M | -6.74K | 9.3% |
| $AAPL | Apple Inc | 70.3K | $17.8M | -8.27K | 7.7% |
| $MSFT | Microsoft Corporation | 43.3K | $16M | -726 | 6.9% |
| $COST | Costco Wholesale Corporation | 15.5K | $15.4M | -2.49K | 6.7% |
| $TJX | TJX Companies Inc | 91K | $14.5M | -24.5K | 6.3% |
| $LIN | Linde plc | 26.7K | $13.3M | -7.47K | 5.7% |
| $SYK | Stryker Corporation | 35.8K | $11.8M | -6.62K | 5.1% |
| $ADP | Automatic Data Processing Inc | 51.1K | $10.4M | -5.01K | 4.5% |
| $HONA | Honeywell Aerospace Inc | 14 | $10.1M | +0 | 4.3% |
| $ETN | Eaton Corporation PLC | 26.4K | $9.45M | -9.47K | 4.1% |
…and 48 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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