Columbia Asset Management

CIK

1585047

Location

Ann Arbor, MI

Portfolio Value

Small $139,376,718

Diversification

Diversified

Filing Date

Global Rank

#2,659 / 8,586 ▼ 59

Top Industry

Drug Manufacturers - General 12.1%

3Y Alpha vs SPY

-5.9%

Period ended 3 months ago

Filed Apr 21, 2026 · 56d

24 quarters · since Mar 2020

Clone Performance

Jun 2023–Jun 2026 · vs SPY

Hypothetical growth of cloning every reported 13F position and rebalancing on each filing, indexed to the same start.

Cloned portfolio

+53.2%

SPY

+78.1%

Annualised alpha

-5.9%

Max drawdown

−17.3%

Estimate. 13F holdings are quarter-lagged and long-only, so the clone rebalances about 45 days after each period end — when the filing becomes public — and excludes options and short positions. Past performance does not predict future results.

Portfolio Concentration

149 positions · as of Mar 31, 2026 · Δ vs Dec 31, 2025

Top Position

10.4%

−0.0 pts

Top 5

29.0%

−2.0 pts

Top 10

43.0%

−2.8 pts

HHI

295

Diversified−29

Portfolio Trend

24 quarters · across all stocks

Sector Breakdown

As of Mar 31, 2026

Sector	% Portfolio	Value	Positions
Technology	28.8%	$139,376,718	22
Healthcare	14.5%	$70,307,619	17
Financial Services	12.8%	$62,274,590	17
Consumer Cyclical	9.8%	$47,400,234	17
Industrials	8.9%	$43,259,387	20
Communication Services	8.2%	$39,781,641	9
Consumer Defensive	7.1%	$34,521,041	19
Energy	4.8%	$23,093,881	9
Unclassified	2.3%	$10,957,541	2
Utilities	1.3%	$6,118,947	6
Basic Materials	0.8%	$3,915,036	7
Real Estate	0.7%	$3,625,233	4

Last Quarter's Activity

Export CSV

Mar 31, 2026 vs Dec 31, 2025

Added To

Positions the filer increased

25 positions

Ticker	Company	Δ Shares	Shares	Value
EQNR	Equinor ASA	+9,950	22,835	$963,637
NKE	NIKE, Inc.	+4,875	101,202	$5,345,489
TGT	Target Corp	+3,717	41,957	$5,085,188
CMCSA	Comcast Corp	+3,405	26,274	$754,326
BP	Bp PLC	+3,370	129,274	$6,075,878
RIO	Rio Tinto PLC	+2,155	12,245	$1,142,336
NFLX	Netflix Inc	+1,950	34,548	$3,321,790
MU	Micron Technology Inc	+1,768	5,643	$1,906,431
PFE	Pfizer Inc	+1,698	194,260	$5,454,820
CLX	Clorox Co /De/	+1,610	12,576	$1,303,250
PEP	Pepsico Inc	+1,384	31,968	$4,964,310
CVX	Chevron Corp	+1,262	36,182	$7,486,055
UPS	United Parcel Service Inc	+1,208	39,370	$3,873,220
AEP	American Electric Power Co Inc	+1,097	11,629	$1,524,329
UNP	Union Pacific Corp	+941	24,343	$5,906,098
T	At&T Inc.	+937	97,382	$2,823,104
ERIE	Erie Indemnity Co	+821	72,569	$18,237,315
DUK	Duke Energy CORP	+710	13,144	$1,721,075
VRTX	Vertex Pharmaceuticals Inc / Ma	+646	2,889	$1,290,054
MDLZ	Mondelez International, Inc.	+550	14,404	$830,246
UL	Unilever PLC	+516	17,449	$994,069
USB	US Bancorp De	+470	32,463	$1,688,400
NVDA	Nvidia Corp	+370	33,179	$5,786,417
XOM	Exxon Mobil Corp	+370	23,061	$3,912,529
AMT	American Tower Corp /Ma/	+315	7,732	$1,334,388
No positions match the current search.

Trimmed

Positions the filer reduced

25 positions

Ticker	Company	Δ Shares	Shares	Value
CSCO	Cisco Systems, Inc.	−7,021	89,982	$6,981,703
TJX	Tjx Companies Inc /De/	−5,705	4,797	$766,080
INTC	Intel Corp	−4,935	16,380	$722,849
GLW	Corning Inc /Ny	−3,970	30,656	$4,168,296
BAC	Bank Of America Corp /De/	−3,568	15,015	$731,981
IBM	International Business Machines Corp	−3,227	29,244	$7,088,453
GOOGL	Alphabet Inc.	−3,085	74,081	$21,302,732
SBUX	Starbucks Corp	−2,816	81,445	$7,296,657
GNRC	Generac Holdings Inc.	−2,645	2,809	$548,681
KHC	Kraft Heinz Co	−2,400	23,102	$519,563
SONY	Sony Group Corp	−2,200	107,500	$2,225,250
C	Citigroup Inc	−2,086	23,717	$2,689,744
JNJ	Johnson & Johnson	−1,799	54,270	$13,265,758
GIS	General Mills Inc	−1,710	12,890	$479,765
VZ	Verizon Communications Inc	−1,661	145,152	$7,286,630
MMM	3M Co	−1,580	14,586	$2,118,324
AAPL	Apple Inc.	−1,551	198,088	$50,272,753
DIS	Walt Disney Co	−1,517	34,651	$3,339,663
SIRI	Sirius Xm Holdings Inc.	−1,500	11,495	$265,304
BNY	Bank of New York Mellon Corp	−1,420	12,117	$1,437,439
ORCL	Oracle Corp	−1,335	7,572	$1,113,916
WMT	Walmart Inc.	−1,218	7,402	$919,920
KO	Coca Cola Co	−1,155	72,207	$5,491,342
AVGO	Broadcom Inc.	−1,133	47,472	$14,693,058
QCOM	Qualcomm Inc/De	−1,045	11,278	$1,452,380
No positions match the current search.

New Positions

Positions the filer opened this quarter

7 positions

Ticker	Company	Shares	Value
AZN	Astrazeneca PLC	4,189	$826,154
DELL	Dell Technologies Inc.	3,385	$555,580
FITB	Fifth Third Bancorp	8,342	$387,569
D	Dominion Energy, Inc	5,454	$337,166
MPC	Marathon Petroleum Corp	1,100	$268,598
DTM	DT Midstream, Inc.	1,633	$219,916
TTE	TotalEnergies SE	2,280	$207,434
No positions match the current search.

Sold Out

Positions the filer fully exited

6 positions

Ticker	Company	Shares	Value
BRK-B	Berkshire Hathaway Inc	37,270	$18,733,765
SEE	SEALED AIR CORP/DE	15,560	$644,650
UNH	Unitedhealth Group Inc	1,585	$523,224
CVS	CVS HEALTH Corp	5,248	$416,481
PLTR	Palantir Technologies Inc.	1,450	$257,737
MA	Mastercard Inc	366	$208,942
No positions match the current search.

Portfolio Positions

Compact Export CSV View 13F filing

22 positions · $139,376,718 total · Technology only · as of Mar 31, 2026

All sectors Basic Materials Communication Services Consumer Cyclical Consumer Defensive Energy Financial Services Healthcare Industrials Real Estate Technology Utilities

Ticker	Company	Type	Shares	Δ Shares	Value (USD)	% Δ Value	% of Portfolio
AAPL	Apple Inc. Technology	Reduced	198,088	-1,551	$50,272,753	−7.4%	36.07%
MSFT	Microsoft Corp Technology	Reduced	90,105	-64	$33,354,167	−23.5%	23.93%
AVGO	Broadcom Inc. Technology	Reduced	47,472	-1,133	$14,693,058	−12.7%	10.54%
IBM	International Business Machines Corp Technology	Reduced	29,244	-3,227	$7,088,453	−26.3%	5.09%
CSCO	Cisco Systems, Inc. Technology	Reduced	89,982	-7,021	$6,981,703	−6.6%	5.01%
NVDA	Nvidia Corp Technology	Added	33,179	+370	$5,786,417	−5.4%	4.15%
GLW	Corning Inc /Ny Technology	Reduced	30,656	-3,970	$4,168,296	+37.5%	2.99%
ADBE	Adobe Inc. Technology	Reduced	15,259	-618	$3,709,157	−33.3%	2.66%
ASML	Asml Holding NV Technology	Reduced	1,849	-7	$2,442,214	+23.0%	1.75%
SONY	Sony Group Corp Technology	Reduced	107,500	-2,200	$2,225,250	−20.8%	1.60%
MU	Micron Technology Inc Technology	Added	5,643	+1,768	$1,906,431	+72.4%	1.37%
QCOM	Qualcomm Inc/De Technology	Reduced	11,278	-1,045	$1,452,380	−31.1%	1.04%
ORCL	Oracle Corp Technology	Reduced	7,572	-1,335	$1,113,916	−35.8%	0.80%
LRCX	Lam Research Corp Technology	Held	4,750	0	$1,014,885	+24.8%	0.73%
INTC	Intel Corp Technology	Reduced	16,380	-4,935	$722,849	−8.1%	0.52%
DELL	Dell Technologies Inc. Technology	NEW	3,385	NEW	$555,580	NEW	0.40%
MCHP	Microchip Technology Inc Technology	Held	7,433	0	$480,246	+1.4%	0.34%
ADP	Automatic Data Processing Inc Technology	Added	1,764	+3	$358,409	−20.9%	0.26%
STX	Seagate Technology Holdings plc Technology	Held	750	0	$293,820	+42.3%	0.21%
DDOG	Datadog, Inc. Technology	Held	2,240	0	$264,432	−13.2%	0.19%
INTU	Intuit Inc. Technology	Held	602	0	$260,292	−34.7%	0.19%
GRMN	Garmin Ltd Technology	Held	1,000	0	$232,010	+14.4%	0.17%