Columbia Asset Management
SEC Form 13F institutional filer · CIK 0001585047
13F-HR · 130 reported holdings · 2026-03-31
Reported long-US-equity value
$0.48B
Top-10 concentration
43.5%
Columbia Asset Management — $479M AUM allocation strategy
Columbia Asset Management files SEC Form 13F and reports $479M of long US equity value across 130 reported holdings for 2026-03-31.
Its largest sector bet is Information Technology 22.0%, followed by Health Care 10.5% and Financials 9.1%.
The top 10 holdings account for 44% 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.
Columbia Asset Management — latest SEC 13F insights
Reported long-US-equity value (13F AUM)
$479M
total across 130 reported holdings · 2026-03-31 · excludes shorts, cash, non-US
Top-10 concentration
44% of value
higher = narrower conviction; lower = spread / hedging
Biggest adds (shares)
+$NKE +4.88K sh · −$792K+$TGT +3.72K sh · +$1.35M+$CMCSA +3.4K sh · +$70.8K
Biggest trims (shares)
−$CSCO −7.02K sh · −$490K−$TJX −5.71K sh · −$847K−$INTC −4.93K sh · −$63.7K
Exited to nil (held last quarter, gone now)
$BRK.B ($18.7M last qtr)$UNH ($523K last qtr)$CVS ($417K last qtr)$PLTR ($258K last qtr)$MA ($209K 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)
- Technology Hardware, Storage & Peripherals10.5%—
- Pharmaceuticals7.2%—
- Systems Software7.0%—
- Interactive Media & Services6.6%—
- Insurance Brokers3.8%—
- Broadline Retail3.7%—
- Biotechnology3.3%—
- Transaction & Payment Processing Services3.2%—
- Other holdings54.8%—
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 |
|---|---|---|---|---|---|
| $AAPL | Apple Inc | 198K | $50.3M | -1.55K | 10.5% |
| $MSFT | Microsoft Corporation | 90.1K | $33.4M | -64 | 7.0% |
| $GOOG | Alphabet Inc. Class C Capital Stock | 74.1K | $21.3M | -3.08K | 4.4% |
| $ERIE | Erie Indemnity Company | 72.6K | $18.2M | +821 | 3.8% |
| $AMZN | Amazon.com Inc | 84.5K | $17.6M | +148 | 3.7% |
| $V | Visa Inc | 51.1K | $15.5M | -671 | 3.2% |
| $AVGO | Broadcom Inc | 47.5K | $14.7M | -1.13K | 3.1% |
| $MRK | Merck & Company Inc | 112K | $13.4M | +129 | 2.8% |
| $JNJ | Johnson & Johnson | 54.3K | $13.3M | -1.8K | 2.8% |
| $CAT | Caterpillar Inc | 15.1K | $10.7M | -25 | 2.2% |
…and 120 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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