AA
Aufman Associates Inc 13F Portfolio & Top Holdings (Q2 2026)
Aufman Associates IncCIK: 0001801573
Sector-focusedMomentum followerQuality / disciplined sizing
Total reported value
$250.9M
Reporting period: 2026-06-30 · Number of holdings: 67
Aufman Associates Inc disclosed 67 holdings in its latest 13F filing for the period ending 2026-06-30, with total reported value of $250.9M and a quarterly turnover rate of 23.1%.
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Personality snowflake
- Concentration
- 49.45
- Portfolio Stability
- 23.13
- Momentum
- 100
- Sector conviction
- 100
- Diversification
- 100
- Sizing Uniformity
- 72.81
Aufman Associates Inc's disclosed holdings carry a Herfindahl concentration index of 0.124 — mathematically equivalent to about 8 equally-sized positions, well below its 67 actual disclosed holdings. That gap points to a strategy built around a small core of high-conviction bets rather than broad diversification.
Position sizes vary widely across the portfolio (a coefficient of variation of 2.72), with a handful of outsized bets alongside many smaller positions.
No strong tilt toward either adding to existing winners or initiating outsized new positions was observed in the latest reported quarter.
Sector classification currently covers about 28% of this portfolio's disclosed value; the remainder includes holdings (e.g. unmapped tickers, options, or other security types) not yet covered by our sector mapping.
Source and citation information
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Recent moves
View source Form 13F filing on SEC.govAdd STX
-22.7% $23.2M
Trim VEA
-2.7% $2.6M
Trim VB
-1.2% $5.4M
Trim VOO
-0.2% $5.3M
Sold out XOM
Trim FNDX
+3.0% $2.8M
Holdings Map
New buyAddUnchangedTrim
Top 10 holdings by weight
Full holdings list this quarter
| # | Ticker | Issuer | Asset Subclass | Weight | Weight Change | Shares Change | 4Q Trend |
|---|---|---|---|---|---|---|---|
| 1 | STX | Seagate Technology Holdings plc | Stock-Tech | 19.47% | +6.88% | -22.74% | |
| 2 | VB | Vanguard Small-cap ETF | ETF-Other | 17.04% | -1.31% | -1.20% | |
| 3 | VOO | Vanguard S&p 500 ETF | ETF-Large Cap & Growth | 16.33% | -1.18% | -0.18% | |
| 4 | VEA | Vanguard Ftse Developed ETF | ETF-Other | 14.01% | -1.94% | -2.74% | |
| 5 | FNDX | Schwab Fndmntl US Lrg Co ETF | ETF-Other | 8.67% | -0.60% | +3.00% | |
| 6 | VOT | Vanguard Mid-cap Growth ETF | ETF-Other | 2.98% | -0.14% | -1.00% | |
| 7 | IVV | Ishares Core S&p 500 ETF | ETF-Large Cap & Growth | 2.29% | -0.15% | +0.52% | |
| 8 | MRNA | Moderna Inc | Stock-Healthcare | 1.82% | +0.47% | +15.24% | |
| 9 | VEU | Vanguard Ftse All-world Ex-u | ETF-Other | 1.72% | -0.20% | -1.57% | |
| 10 | GOOG | Alphabet Inc-cl C | Stock-Comm Services | 1.38% | +0.38% | +38.53% | |
| 11 | BRK-B | Berkshire Hathaway Inc-cl B | Stock-Other | 1.23% | -0.36% | -9.15% | |
| 12 | MTX | Minerals Technologies Inc | Stock-Other | 1.06% | -0.26% | -5.26% | |
| 13 | AAPL | Apple Inc | Stock-Tech | 0.85% | -0.11% | -5.10% | |
| 14 | VXUS | Vanguard Total Intl Stock | ETF-Other | 0.52% | -0.04% | +4.25% | |
| 15 | USXF | Ishares Esg Advance Msci USA | ETF-Other | 0.50% | +0.01% | +0.16% | |
| 16 | MSFT | Microsoft CORP | Stock-Tech | 0.49% | -0.11% | -0.03% | |
| 17 | ESML | Ishares Esg Aware Msci USA S | ETF-Other | 0.49% | -0.02% | -0.70% | |
| 18 | ✓ | Stock-Other | 0.41% | +0.41% | NEW | ||
| 19 | IWF | Ishares Russell 1000 Growth | ETF-Other | 0.38% | -0.02% | +300.00% | |
| 20 | VO | Vanguard Mid-cap ETF | ETF-Other | 0.37% | -0.04% | +300.03% | |
| 21 | CCI | Crown Castle Inc | Stock-Real Estate | 0.37% | -0.20% | -14.01% | |
| 22 | SPY | Ss Spdr S&p 500 ETF Trust-us | ETF-Large Cap & Growth | 0.36% | -0.03% | -0.41% | |
| 23 | VUG | Vanguard Growth ETF | ETF-Other | 0.35% | -0.07% | +428.76% | |
| 24 | RVTY | Revvity Inc | Stock-Healthcare | 0.33% | -0.03% | -10.75% | |
| 25 | JNJ | Johnson & Johnson | Stock-Healthcare | 0.32% | -0.06% | -1.12% | |
| 26 | ABBV | Abbvie Inc | Stock-Healthcare | 0.32% | -0.03% | -2.02% | |
| 27 | ESGD | Ishares Trust Ishares Esg Aw | ETF-Other | 0.29% | -0.03% | +1.33% | |
| 28 | AVGO | Broadcom Inc | Stock-Tech | 0.28% | -0.01% | +0.05% | |
| 29 | VTI | Vanguard Total Stock Mkt ETF | ETF-Other | 0.28% | -0.02% | +0.21% | |
| 30 | IJR | Ishares Core S&p Small-cap E | ETF-Small Cap | 0.23% | -0.01% | -0.35% | |
| 31 | IWD | Ishares Russell 1000 Value E | ETF-Other | 0.22% | -0.02% | — | |
| 32 | ONEQ | Fidelity Nasdaq Comp Indx | ETF-Tech | 0.20% | -0.01% | — | |
| 33 | IWP | Ishares Russell Mid-cap Grow | ETF-Other | 0.20% | -0.02% | -0.54% | |
| 34 | CVX | Chevron CORP | Stock-Energy | 0.19% | -0.11% | -1.60% | |
| 35 | GOOGL | Alphabet Inc-cl A | Stock-Comm Services | 0.18% | -0.01% | -3.79% | |
| 36 | KHC | Kraft Heinz Co/the | Stock-Consumer Staples | 0.18% | -0.03% | — | |
| 37 | AMD | Advanced Micro Devices | Stock-Tech | 0.17% | +0.17% | NEW | |
| 38 | SUSA | Ishares Esg Optimized Msci U | ETF-Other | 0.17% | — | +0.07% | |
| 39 | TSM | Taiwan Semiconductor-sp Adr | Stock-Tech | 0.17% | — | -15.53% | |
| 40 | DIS | Walt Disney Co/the | Stock-Comm Services | 0.15% | -0.04% | +0.25% | |
| 41 | MRK | Merck & Co. Inc. | Stock-Healthcare | 0.15% | -0.07% | -18.64% | |
| 42 | EFAX | State Street Spdr Msci Eafe | ETF-Other | 0.15% | -0.02% | +1.52% | |
| 43 | CAT | Caterpillar Inc | Stock-Industrials | 0.15% | +0.03% | — | |
| 44 | AMZN | Amazon.com Inc | Stock-Consumer Disc | 0.15% | +0.01% | +12.73% | |
| 45 | IWN | Ishares Russell 2000 Value E | ETF-Small Cap | 0.13% | -0.01% | — | |
| 46 | IJH | Ishares Core S&p Midcap ETF | ETF-Other | 0.13% | -0.01% | — | |
| 47 | PAYX | Paychex Inc | Stock-Tech | 0.12% | -0.02% | — | |
| 48 | TOTL | Ss Doubleline Tr Tact ETF | ETF-Other | 0.12% | -0.03% | +1.11% | |
| 49 | KO | Coca-cola Co/the | Stock-Consumer Staples | 0.12% | -0.02% | -1.39% | |
| 50 | IBM | Intl Business Machines CORP | Stock-Tech | 0.12% | +0.12% | NEW |
1–50 of 67
Portfolio Performance
Performance for Q3 2026
+2.8%
Performance Last 4 Quarters
+50.9%
- Stdev
- +16.8%
- Beta
- +1.17
- Alpha
- +3.3%
- Max Drawdown
- -7.8%
- Annualized Perf
- +28.4%
- Batting Avg vs S&P
- +61.1%
- Sortino
- +3.71
- Stutzer
- +0.48
- Treynor
- +0.23
- Sterling
- +1.78
- Calmar
- +3.65
- Information Ratio
- +0.85
- Tracking Error
- +7.7%
- Stdev Down
- +7.2%
- Winning Months %
- +69.4%
- Losing Months %
- +30.6%
- Best 12 Months
- +63.6%
- Worst 12 Months
- +2.6%
- Efficiency Ratio
- +0.73
- Sharpe
- +1.58
- Stdev Sectors
- +23.4%
- Skewness
- +0.5
- Kurtosis
- +0.6
- Upside Potential
- +5.43
Reported value over time
Sector allocation
Sector allocation over time
Quarterly history
| Period | Holdings | Total value | Stability | Top holdings | |
|---|---|---|---|---|---|
| 2026 Q2 | 67 | $250.9M | 23 | ||
| 2026 Q1 | 65 | $203.8M | 10 | ||
| 2025 Q4 | 67 | $195.1M | 12 | ||
| 2025 Q3 | 66 | $177.7M | 21 | ||
| 2025 Q2 | 64 | $162.2M | 0 | ||
| 2025 Q1 | 57 | $145.5M | 100 | ||
| 2024 Q4 | 59 | $148.1M | 0 | ||
| 2024 Q3 | 64 | $155.6M | 0 | ||
| 2024 Q2 | 46 | $140.5M | 0 | ||
| 2024 Q1 | 46 | $142.0M | 0 | ||
| 2023 Q4 | 43 | $132.5M | 0 | ||
| 2023 Q3 | 43 | $119.2M | 0 | ||
| 2023 Q2 | 43 | $121.2M | 0 | ||
| 2023 Q1 | 42 | $117.5M | 0 | ||
| 2022 Q4 | 43 | $108.2M | 0 | ||
| 2022 Q3 | 40 | $95.0M | 0 | ||
| 2022 Q2 | 44 | $105.2M | 0 | ||
| 2022 Q1 | 47 | $126.9M | 0 | ||
| 2021 Q4 | 54 | $135.2M | 0 | ||
| 2021 Q3 | 46 | $121.6M | 0 | ||
| 2021 Q2 | 49 | $129.7M | 96 | ||
| 2021 Q1 | 44 | $120.1M | 18 | ||
| 2020 Q4 | 43 | $111.5M | 20 | ||
| 2020 Q3 | 37 | $93.0M | 10 | ||
| 2020 Q2 | 35 | $88.1M | 22 | ||
| 2020 Q1 | 35 | $72.5M | 38 | ||
| 2019 Q4 | 42 | $97.1M | 0 |
Holding changes this quarter
Aufman Associates Inc's most significant position changes for 2026-06-30: Sold out: Exxon Mobil CORP (XOM); New buy: ; New buy: Advanced Micro Devices (AMD); Sold out: Conocophillips (COP); New buy: Intl Business Machines CORP (IBM).
1–50 of 70
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Data Source Notice: AlphaSMO is the web's most authoritative 13F / Inside Trader database. Institutional holdings and insider trades presented here are precisely computed to deliver accurate portfolio reporting.
Filing History
FAQ
What is Aufman Associates Inc and what type of investor is it?
Aufman Associates Inc is an investment manager that files SEC Form 13F quarterly, disclosing its U.S. public equity holdings to regulators. As of the most recent reporting period (2026-06-30), the firm manages a tracked equity portfolio valued at approximately $250.9M, spread across 67 disclosed positions.
What are Aufman Associates Inc's largest equity positions?
Based on the latest 13F filing, Aufman Associates Inc's top holdings by market value are:
1. Seagate Technology Holdings plc (STX) — $48.8M (19.5%)
2. Vanguard Small-cap ETF (VB) — $42.8M (17.0%)
3. Vanguard S&p 500 ETF (VOO) — $41.0M (16.3%)
4. Vanguard Ftse Developed ETF (VEA) — $35.1M (14.0%)
5. Schwab Fndmntl US Lrg Co ETF (FNDX) — $21.7M (8.7%)
What changes did Aufman Associates Inc make in its most recent portfolio filing?
In the latest reported quarter, Aufman Associates Inc made 55 notable position adjustments: 5 new positions were initiated, 19 existing holdings were added to, 28 positions were partially reduced, and 3 were completely exited. The largest of these moves: Sold out: Exxon Mobil CORP (XOM); New buy: ; New buy: Advanced Micro Devices (AMD); Sold out: Conocophillips (COP); New buy: Intl Business Machines CORP (IBM)
What sectors does Aufman Associates Inc focus on?
Aufman Associates Inc is concentrated in the following sectors based on its current disclosed equity portfolio:
• Information Technology: 76.6%
• Health Care: 11.5%
• Communication Services: 6.4%
• Consumer Staples: 1.4%
• Real Estate: 1.3%
• Consumer Discretionary: 1.2%
Investment Profile
Aufman Associates Inc returned an annualized 28.4% over the trailing 36 months — outperforming the S&P 500 by 3.3 points — based on a reconstructed track record of its disclosed 13F positions, with a beta of 1.17 (more volatile than the market) and a 61% quarterly batting average against the index.
Its portfolio is moderately concentrated and moderately active, with 76.6% of the portfolio concentrated in Information Technology.
Its turnover score has risen from 0 to 23 over the past 4 quarters — a shift toward more active trading.
It has added to its STX position over the past two quarters (+$30.8M, now $48.8M), while trimming CCI over the same stretch (-$526.1K, still holding $929.5K).
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