2026 Q3 Portfolio Activity
In 2026 Q3, Aufman Associates Inc maintained a portfolio of 70 distinct positions. The most significant new addition was Harbor Commodity All-Weather S, now representing 0.16% of the total fund value. They heavily accumulated shares in Berkshire Hathaway Cl B, increasing the position by 8.6%. Conversely, Aufman Associates Inc completely exited their position in Moderna.
Position History
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Total Positions
70
Quarter
2026 Q3
Top Holding
STX (19.1%)
Top 10 Concentration
86.5%
Turnover Rate
23.4%
Sector HHI
0.18
Items per page:
Showing 1-50 of 70
Aufman Associates Inc Full Holdings List — 2026 Q3
| Stock | History | Sector / Type | Port % | Prev % | Rank / Prev | Conviction | Change | % Change | Influence | Shares | Mkt Value | Avg Cost | Price Held | 1st Owned | Source | Source Date | Date Reported | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
STX
Seagate Technol...
|
Technology | 19.11% | 19.47% |
#1
Prev: #1
|
6.5 |
—
|
-22 | -0.0% |
P
S
|
50,590 | $46,661,181 | 2019 Q4 | 13F Filing | 2026-09-30 | 2026-11-04 | |||
|
VOO
Vanguard S&P 50...
|
ETF | 16.91% | 16.33% |
#2
1
Prev: #3
|
6.0 |
—
|
-722 | -1.2% |
P
S
|
58,914 | $41,290,685 | 2019 Q4 | 13F Filing | 2026-09-30 | 2026-11-04 | |||
|
VB
Vanguard MStar ...
|
ETF | 16.88% | 17.04% |
#3
1
Prev: #2
|
5.5 |
—
|
3,809 | 2.7% |
P
S
|
144,871 | $41,214,360 | 2019 Q4 | 13F Filing | 2026-09-30 | 2026-11-04 | |||
|
VEA
Vanguard Develo...
|
ETF | 14.39% | 14.01% |
#4
Prev: #4
|
5.0 |
—
|
4,216 | 0.9% |
P
S
|
497,548 | $35,131,878 | 2019 Q4 | 13F Filing | 2026-09-30 | 2026-11-04 | |||
|
FNDX
Schwab Fundamen...
|
ETF | 9.43% | 8.67% |
#5
Prev: #5
|
4.8 |
—
|
32,589 | 4.7% |
P
S
|
731,629 | $23,024,361 | 2021 Q1 | 13F Filing | 2026-09-30 | 2026-11-04 | |||
|
VOT
Vanguard MStar ...
|
ETF | 2.96% | 2.98% |
#6
Prev: #6
|
1.7 |
—
|
286 | 1.2% |
P
S
|
24,715 | $7,219,271 | 2019 Q4 | 13F Filing | 2026-09-30 | 2026-11-04 | |||
|
IVV
iShares Core S&...
|
ETF | 2.35% | 2.29% |
#7
Prev: #7
|
1.4 |
—
|
-162 | -2.1% |
P
S
|
7,504 | $5,746,702 | 2019 Q4 | 13F Filing | 2026-09-30 | 2026-11-04 | |||
|
VEU
Vanguard FTSE A...
|
ETF | 1.73% | 1.72% |
#8
1
Prev: #9
|
1.2 |
—
|
-421 | -0.8% |
P
S
|
51,007 | $4,232,085 | 2019 Q4 | 13F Filing | 2026-09-30 | 2026-11-04 | |||
|
GOOG
Alphabet Cl C
|
Communication Services | 1.42% | 1.38% |
#9
1
Prev: #10
|
1.1 |
—
|
331 | 3.4% |
P
S
|
10,153 | $3,459,390 | 2019 Q4 | 13F Filing | 2026-09-30 | 2026-11-04 | |||
|
BRK/B
Berkshire Hatha...
|
Financial Services | 1.36% | 1.23% |
#10
1
Prev: #11
|
2.5 |
—
|
528 | 8.6% |
P
S
|
6,686 | $3,329,294 | 2019 Q4 | 13F Filing | 2026-09-30 | 2026-11-04 | |||
|
AAPL
Apple
|
Technology | 0.98% | 0.85% |
#11
2
Prev: #13
|
0.9 |
—
|
-200 | -2.7% |
P
S
|
7,154 | $2,382,461 | 2019 Q4 | 13F Filing | 2026-09-30 | 2026-11-04 | |||
|
MTX
Minerals Techno...
|
Basic Materials | 0.96% | 1.06% |
#12
Prev: #12
|
1.4 |
—
|
no change | no change |
P
S
|
36,011 | $2,355,119 | 2020 Q1 | 13F Filing | 2026-09-30 | 2026-11-04 | |||
|
MSFT
Microsoft
|
Technology | 0.70% | 0.49% |
#13
3
Prev: #16
|
0.8 |
—
|
28 | 0.9% |
P
S
|
3,315 | $1,700,028 | 2019 Q4 | 13F Filing | 2026-09-30 | 2026-11-04 | |||
|
VXUS
Vanguard Total ...
|
ETF | 0.53% | 0.52% |
#14
Prev: #14
|
0.7 |
—
|
27 | 0.2% |
P
S
|
15,325 | $1,302,016 | 2019 Q4 | 13F Filing | 2026-09-30 | 2026-11-04 | |||
|
XOM
ExxonMobil Hold...
|
Energy | 0.51% | 0.41% |
#15
3
Prev: #18
|
0.7 |
—
|
149 | 2.0% |
P
S
|
7,707 | $1,254,326 | 2019 Q4 | 13F Filing | 2026-09-30 | 2026-11-04 | |||
|
USXF
iShares ESG Adv...
|
ETF | 0.51% | 0.50% |
#16
1
Prev: #15
|
0.7 |
—
|
35 | 0.2% |
P
S
|
18,252 | $1,242,225 | 2021 Q4 | 13F Filing | 2026-09-30 | 2026-11-04 | |||
|
ESML
iShares ESG Awa...
|
ETF | 0.48% | 0.49% |
#17
Prev: #17
|
0.7 |
—
|
429 | 2.0% |
P
S
|
22,338 | $1,161,558 | 2021 Q4 | 13F Filing | 2026-09-30 | 2026-11-04 | |||
|
IWF
iShares Russell...
|
ETF | 0.40% | 0.38% |
#18
1
Prev: #19
|
1.2 |
—
|
no change | no change |
P
S
|
7,708 | $965,504 | 2025 Q2 | 13F Filing | 2026-09-30 | 2026-11-04 | |||
|
SPY
SPDR S&P 500 In...
|
ETF | 0.38% | 0.36% |
#19
3
Prev: #22
|
0.7 |
—
|
-17 | -1.4% |
P
S
|
1,202 | $916,673 | 2019 Q4 | 13F Filing | 2026-09-30 | 2026-11-04 | |||
|
VO
Vanguard MStar ...
|
ETF | 0.37% | 0.37% |
#20
Prev: #20
|
0.6 |
—
|
42 | 0.4% |
P
S
|
11,663 | $914,626 | 2019 Q4 | 13F Filing | 2026-09-30 | 2026-11-04 | |||
|
VUG
Vanguard MStar ...
|
ETF | 0.34% | 0.35% |
#21
2
Prev: #23
|
0.6 |
—
|
-1,075 | -10.4% |
P
S
|
9,220 | $830,773 | 2024 Q2 | 13F Filing | 2026-09-30 | 2026-11-04 | |||
|
ABBV
AbbVie
|
Healthcare | 0.33% | 0.32% |
#22
4
Prev: #26
|
0.6 |
—
|
-130 | -4.1% |
P
S
|
3,066 | $802,035 | 2019 Q4 | 13F Filing | 2026-09-30 | 2026-11-04 | |||
|
ESGD
iShares ESG Awa...
|
ETF | 0.30% | 0.29% |
#23
4
Prev: #27
|
1.1 |
—
|
no change | no change |
P
S
|
7,003 | $721,642 | 2021 Q4 | 13F Filing | 2026-09-30 | 2026-11-04 | |||
|
VTI
Vanguard MStar ...
|
ETF | 0.29% | 0.28% |
#24
5
Prev: #29
|
0.6 |
—
|
3 | 0.2% |
P
S
|
1,914 | $716,317 | 2022 Q2 | 13F Filing | 2026-09-30 | 2026-11-04 | |||
|
AVGO
Broadcom
|
Technology | 0.29% | 0.28% |
#25
3
Prev: #28
|
2.1 |
—
|
136 | 7.2% |
P
S
|
2,020 | $709,326 | 2024 Q3 | 13F Filing | 2026-09-30 | 2026-11-04 | |||
|
CCI
Crown Castle
|
Real Estate | 0.29% | 0.37% |
#26
5
Prev: #21
|
0.6 |
—
|
-1,654 | -13.5% |
P
S
|
10,620 | $707,823 | 2021 Q1 | 13F Filing | 2026-09-30 | 2026-11-04 | |||
|
JNJ
Johnson & Johns...
|
Healthcare | 0.28% | 0.32% |
#27
2
Prev: #25
|
0.6 |
—
|
-603 | -19.0% |
P
S
|
2,564 | $678,793 | 2019 Q4 | 13F Filing | 2026-09-30 | 2026-11-04 | |||
|
CVX
Chevron
|
Energy | 0.25% | 0.19% |
#28
6
Prev: #34
|
0.6 |
—
|
68 | 2.3% |
P
S
|
3,017 | $616,297 | 2021 Q4 | 13F Filing | 2026-09-30 | 2026-11-04 | |||
|
IWD
iShares Russell...
|
ETF | 0.23% | 0.22% |
#29
2
Prev: #31
|
1.1 |
—
|
no change | no change |
P
S
|
2,310 | $572,718 | 2025 Q2 | 13F Filing | 2026-09-30 | 2026-11-04 | |||
|
IJR
iShares Core S&...
|
ETF | 0.22% | 0.23% |
#30
Prev: #30
|
0.6 |
—
|
-25 | -0.6% |
P
S
|
3,906 | $531,341 | 2022 Q4 | 13F Filing | 2026-09-30 | 2026-11-04 | |||
|
ONEQ
Fidelity NASDAQ...
|
ETF | 0.22% | 0.20% |
#31
1
Prev: #32
|
0.6 |
—
|
5 | 0.1% |
P
S
|
4,974 | $526,402 | 2019 Q4 | 13F Filing | 2026-09-30 | 2026-11-04 | |||
|
IWP
iShares Russell...
|
ETF | 0.20% | 0.20% |
#32
1
Prev: #33
|
1.1 |
—
|
no change | no change |
P
S
|
3,480 | $479,126 | 2025 Q2 | 13F Filing | 2026-09-30 | 2026-11-04 | |||
|
AMD
Advanced Micro ...
|
Technology | 0.19% | 0.17% |
#33
4
Prev: #37
|
2.1 |
—
|
39 | 5.3% |
P
S
|
769 | $470,443 | 2024 Q3 | 13F Filing | 2026-09-30 | 2026-11-04 | |||
|
GOOGL
Alphabet Cl A
|
Communication Services | 0.19% | 0.18% |
#34
1
Prev: #35
|
0.6 |
—
|
34 | 2.6% |
P
S
|
1,329 | $457,282 | 2021 Q1 | 13F Filing | 2026-09-30 | 2026-11-04 | |||
|
MRK
Merck & Company
|
Healthcare | 0.19% | 0.15% |
#35
6
Prev: #41
|
0.6 |
—
|
144 | 4.8% |
P
S
|
3,134 | $455,402 | 2024 Q3 | 13F Filing | 2026-09-30 | 2026-11-04 | |||
|
AMZN
Amazon.com
|
Consumer Cyclical | 0.18% | 0.15% |
#36
8
Prev: #44
|
2.1 |
—
|
225 | 14.4% |
P
S
|
1,784 | $444,396 | 2020 Q3 | 13F Filing | 2026-09-30 | 2026-11-04 | |||
|
RVTY
Revvity
|
Healthcare | 0.18% | 0.33% |
#37
13
Prev: #24
|
0.1 |
—
|
-4,472 | -60.7% |
P
S
|
2,900 | $443,381 | 2020 Q1 | 13F Filing | 2026-09-30 | 2026-11-04 | |||
|
KHC
Kraft Heinz Co
|
Consumer Defensive | 0.17% | 0.18% |
#38
2
Prev: #36
|
1.1 |
—
|
no change | no change |
P
S
|
18,621 | $423,069 | 2024 Q3 | 13F Filing | 2026-09-30 | 2026-11-04 | |||
|
DIS
The Walt Disney...
|
Communication Services | 0.17% | 0.15% |
#39
1
Prev: #40
|
0.6 |
—
|
17 | 0.4% |
P
S
|
4,017 | $421,407 | 2019 Q4 | 13F Filing | 2026-09-30 | 2026-11-04 | |||
|
SUSA
iShares ESG Opt...
|
ETF | 0.17% | 0.17% |
#40
2
Prev: #38
|
0.6 |
—
|
5 | 0.2% |
P
S
|
2,699 | $420,140 | 2024 Q4 | 13F Filing | 2026-09-30 | 2026-11-04 | |||
|
TSM
Taiwan Semicond...
|
Technology | 0.16% | 0.17% |
#41
2
Prev: #39
|
1.1 |
—
|
no change | no change |
P
S
|
870 | $396,885 | 2024 Q3 | 13F Filing | 2026-09-30 | 2026-11-04 | |||
|
HGER
Harbor Commodit...
|
ETF | 0.16% | — |
#42
Prev: #—
|
3.6 |
—
|
11,069 | — |
NEW
|
11,069 | $390,293 | 2026 Q3 | 13F Filing | 2026-09-30 | 2026-11-04 | |||
|
EFAX
SPDR MSCI EAFE ...
|
ETF | 0.16% | 0.15% |
#43
1
Prev: #42
|
1.1 |
—
|
no change | no change |
P
S
|
7,073 | $378,876 | 2020 Q3 | 13F Filing | 2026-09-30 | 2026-11-04 | |||
|
NVDA
NVIDIA
|
Technology | 0.13% | — |
#44
Prev: #—
|
3.6 |
—
|
1,423 | — |
NEW
|
1,423 | $325,076 | 2026 Q3 | 13F Filing | 2026-09-30 | 2026-11-04 | |||
|
KO
Coca-Cola
|
Consumer Defensive | 0.13% | 0.12% |
#45
4
Prev: #49
|
1.1 |
—
|
no change | no change |
P
S
|
3,749 | $322,702 | 2019 Q4 | 13F Filing | 2026-09-30 | 2026-11-04 | |||
|
IWN
iShares Russell...
|
ETF | 0.13% | 0.13% |
#46
1
Prev: #45
|
1.1 |
—
|
no change | no change |
P
S
|
1,500 | $314,175 | 2025 Q2 | 13F Filing | 2026-09-30 | 2026-11-04 | |||
|
ABT
Abbott Laborato...
|
Healthcare | 0.12% | 0.11% |
#47
5
Prev: #52
|
1.0 |
—
|
no change | no change |
P
S
|
3,051 | $301,530 | 2019 Q4 | 13F Filing | 2026-09-30 | 2026-11-04 | |||
|
IJH
iShares Core S&...
|
ETF | 0.12% | 0.13% |
#48
2
Prev: #46
|
1.0 |
—
|
no change | no change |
P
S
|
4,091 | $294,347 | 2019 Q4 | 13F Filing | 2026-09-30 | 2026-11-04 | |||
|
TOTL
SPDR DoubleLine...
|
ETF | 0.12% | 0.12% |
#49
1
Prev: #48
|
0.5 |
—
|
90 | 1.2% |
P
S
|
7,828 | $292,926 | 2021 Q3 | 13F Filing | 2026-09-30 | 2026-11-04 | |||
|
PAYX
Paychex
|
Technology | 0.12% | 0.12% |
#50
3
Prev: #47
|
0.5 |
—
|
-200 | -6.3% |
P
S
|
2,954 | $290,969 | 2019 Q4 | 13F Filing | 2026-09-30 | 2026-11-04 |
Showing 1-50 of 70 holdings