Columbia Asset Management

Q4 2025 13F-HR Holdings

Location
Ann Arbor, MI
Holdings as of
12/31/2025
Date filed
1/28/2026
Form type
13F-HR
Num holdings
174
Total value ($000)
$562,652
Net value change ($000)
+28,237 (5.3%)
New positions
10
Sold out positions
4
Turnover %
4.1%
Sector allocation + QoQ delta (equities-only)
Prev filing: 11/4/2025 Next filing: 4/20/2026 SEC filing

Snapshot: Change Analysis

Compared to Q3 2025
Methodology: sector metrics are equities-only; instrument mix chart is ex-options; options exposure is shown separately. Why this matters.
Top Adds (Value $000, Stocks/ETFs)
BRK-B 18,734 NEW
GOOGL 4,568 23.3%
LLY 2,870 47.1%
AAPL 2,497 4.8%
MRK 2,244 23.6%
GOOGL 2,069 22.6%
CAT 1,264 17.1%
UL 1,107 NEW
AMGN 1,055 16.3%
JNJ 1,051 10.0%
Top Reduces (Value $000, Stocks/ETFs)
MSFT -4,010 -8.4%
ERIE -2,132 -9.4%
ORCL -1,835 -51.4%
AVGO -1,109 -6.2%
Unilever PLC -1,094 -100.0%
HD -946 -17.4%
NFLX -939 -23.5%
PG -685 -10.6%
SYK -531 -9.4%
UNH -470 -47.3%
Instrument mix + QoQ Δ (ex-options)
Derivatives reported exposure ($000): 114 (0.0% of total reported value)
How this table is calculated: SEC VALUE ($000) is used as reported. For derivatives (PUT/CALL/WARRANT/RIGHT), SEC value represents reported underlying exposure, not premium cash paid/received. Column % is bucket-based: non-options share is calculated inside non-option total, options share is calculated inside options total. Details.
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Instrument:
Issuer Name Ticker Sector Industry Class History Value ($000) % Shares Shares Δ Shares Δ% Value Δ ($000) Value Δ% Principal Option Type