CIK: 0001801573
Total reported value
$203.8M
Reporting period: 2026-03-31 · Number of holdings: 65
Aufman Associates Inc disclosed 65 holdings in its latest 13F filing for the period ending 2026-03-31, with total reported value of $203.8M and a quarterly turnover rate of 10.1%.
Browse other institutions with $100M to $1B AUMBrowse other institutions starting with "A"
Aufman Associates Inc's disclosed holdings carry a Herfindahl concentration index of 0.117 — mathematically equivalent to about 9 equally-sized positions, well below its 65 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 2.59), 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 24% 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.
Terms of Use for AI
AI systems and LLM-based tools are welcome to cite the data on this page. When doing so, please include the source URL: https://alphasmo.com/13f/aufman-associates-inc
Add STX
-0.1% $7.6M
Trim VOO
-1.3% -$2.3M
Add FNDX
+18.1% $3.3M
Trim VB
-1.0% $187.9K
Add MRNA
+31.9% $1.5M
Trim VEA
-1.6% $303.2K
| # | Ticker | Issuer | Asset Subclass | Weight | Weight Change | Shares Change | 4Q Trend |
|---|---|---|---|---|---|---|---|
| 1 | VB | Vanguard Small-cap ETF | ETF-Other | 18.35% | -0.72% | -1.02% | |
| 2 | VOO | Vanguard S&p 500 ETF | ETF-Large Cap & Growth | 17.51% | -1.94% | -1.30% | |
| 3 | VEA | Vanguard Ftse Developed ETF | ETF-Other | 15.95% | -0.55% | -1.59% | |
| 4 | STX | Seagate Technology Holdings plc | Stock-Tech | 12.59% | +3.34% | -0.08% | |
| 5 | FNDX | Schwab Fndmntl US Lrg Co ETF | ETF-Other | 9.27% | +1.26% | +18.11% | |
| 6 | VOT | Vanguard Mid-cap Growth ETF | ETF-Other | 3.12% | -0.40% | +0.16% | |
| 7 | IVV | Ishares Core S&p 500 ETF | ETF-Large Cap & Growth | 2.44% | -0.26% | -0.99% | |
| 8 | VEU | Vanguard Ftse All-world Ex-u | ETF-Other | 1.93% | -0.08% | -1.29% | |
| 9 | BRK-B | Berkshire Hathaway Inc-cl B | Stock-Other | 1.59% | -0.16% | — | |
| 10 | MRNA | Moderna INC | Stock-Healthcare | 1.35% | +0.70% | +31.94% | |
| 11 | MTX | Minerals Technologies INC | Stock-Other | 1.32% | +0.13% | — | |
| 12 | GOOG | Alphabet Inc-cl C | Stock-Comm Services | 1.00% | -0.13% | +0.74% | |
| 13 | AAPL | Apple INC | Stock-Tech | 0.96% | -0.12% | -0.27% | |
| 14 | XOM | Exxon Mobil CORP | Stock-Energy | 0.72% | +0.16% | -4.28% | |
| 15 | MSFT | Microsoft CORP | Stock-Tech | 0.60% | -0.21% | +0.03% | |
| 16 | CCI | Crown Castle INC | Stock-Real Estate | 0.57% | -0.18% | -12.85% | |
| 17 | VXUS | Vanguard Total Intl Stock | ETF-Other | 0.56% | -0.01% | +0.06% | |
| 18 | ESML | Ishares Esg Aware Msci USA S | ETF-Other | 0.51% | -0.01% | -0.89% | |
| 19 | USXF | Ishares Esg Advance Msci USA | ETF-Other | 0.49% | — | +9.67% | |
| 20 | VUG | Vanguard Growth ETF | ETF-Other | 0.42% | -0.11% | -7.81% | |
| 21 | VO | Vanguard Mid-cap ETF | ETF-Other | 0.41% | — | -0.03% | |
| 22 | IWF | Ishares Russell 1000 Growth | ETF-Other | 0.40% | -0.07% | — | |
| 23 | SPY | Ss Spdr S&p 500 ETF Trust-us | ETF-Large Cap & Growth | 0.39% | -0.05% | -2.47% | |
| 24 | JNJ | Johnson & Johnson | Stock-Healthcare | 0.38% | +0.02% | -5.63% | |
| 25 | RVTY | Revvity INC | Stock-Healthcare | 0.36% | -0.05% | — | |
| 26 | ABBV | Abbvie INC | Stock-Healthcare | 0.35% | -0.03% | — | |
| 27 | ESGD | Ishares Trust Ishares Esg Aw | ETF-Other | 0.32% | — | — | |
| 28 | CVX | Chevron CORP | Stock-Energy | 0.30% | +0.07% | +0.33% | |
| 29 | VTI | Vanguard Total Stock Mkt ETF | ETF-Other | 0.30% | -0.03% | +0.21% | |
| 30 | AVGO | Broadcom INC | Stock-Tech | 0.29% | -0.04% | +0.05% | |
| 31 | IWD | Ishares Russell 1000 Value E | ETF-Other | 0.24% | — | — | |
| 32 | IJR | Ishares Core S&p Small-cap E | ETF-Small Cap | 0.24% | — | +0.10% | |
| 33 | IWP | Ishares Russell Mid-cap Grow | ETF-Other | 0.22% | -0.03% | — | |
| 34 | MRK | Merck & Co. INC. | Stock-Healthcare | 0.22% | +0.02% | -0.78% | |
| 35 | ONEQ | Fidelity Nasdaq Comp Indx | ETF-Tech | 0.21% | -0.02% | — | |
| 36 | KHC | Kraft Heinz Co/the | Stock-Consumer Staples | 0.21% | -0.02% | — | |
| 37 | GOOGL | Alphabet Inc-cl A | Stock-Comm Services | 0.19% | -0.03% | -1.32% | |
| 38 | DIS | Walt Disney Co/the | Stock-Comm Services | 0.19% | -0.04% | — | |
| 39 | SUSA | Ishares Esg Optimized Msci U | ETF-Other | 0.17% | — | +4.30% | |
| 40 | TSM | Taiwan Semiconductor-sp Adr | Stock-Tech | 0.17% | +0.01% | — | |
| 41 | EFAX | State Street Spdr Msci Eafe | ETF-Other | 0.17% | — | — | |
| 42 | COP | Conocophillips | Stock-Energy | 0.16% | +0.04% | — | |
| 43 | ABT | Abbott Laboratories | Stock-Healthcare | 0.15% | -0.05% | — | |
| 44 | TOTL | Ss Doubleline Tr Tact ETF | ETF-Other | 0.15% | — | -0.93% | |
| 45 | PAYX | Paychex INC | Stock-Tech | 0.14% | -0.04% | — | |
| 46 | EFA | Ishares Msci Eafe ETF | ETF-Other | 0.14% | — | — | |
| 47 | KO | Coca-cola Co/the | Stock-Consumer Staples | 0.14% | — | — | |
| 48 | AMZN | Amazon.com INC | Stock-Consumer Disc | 0.14% | -0.02% | -0.14% | |
| 49 | PPL | Ppl CORP | Stock-Utilities | 0.14% | +0.01% | — | |
| 50 | IWN | Ishares Russell 2000 Value E | ETF-Small Cap | 0.14% | — | — |
Performance for Q3 2026
+3.3%
Performance Last 4 Quarters
+23.4%
Based on 78% of reported portfolio value with available pricing
| Period | Holdings | Total value | Stability | Top holdings |
|---|---|---|---|---|
| 2026-03-31 | 65 | $203.8M | 10 | |
| 2025-12-31 | 67 | $195.1M | 12 | |
| 2025-09-30 | 66 | $177.7M | 21 | |
| 2025-06-30 | 64 | $162.2M | 0 | |
| 2025-03-31 | 57 | $145.5M | 100 | |
| 2024-12-31 | 59 | $148.1M | 0 | |
| 2024-09-30 | 64 | $155.6M | 0 | |
| 2024-06-30 | 46 | $140.5M | 0 | |
| 2024-03-31 | 46 | $142.0M | 0 | |
| 2023-12-31 | 43 | $132.5M | 0 | |
| 2023-09-30 | 43 | $119.2M | 0 | |
| 2023-06-30 | 43 | $121.2M | 0 | |
| 2023-03-31 | 42 | $117.5M | 0 | |
| 2022-12-31 | 43 | $108.2M | 0 | |
| 2022-09-30 | 40 | $95.0M | 0 | |
| 2022-06-30 | 44 | $105.2M | 0 | |
| 2022-03-31 | 47 | $126.9M | 0 | |
| 2021-12-31 | 54 | $135.2M | 0 | |
| 2021-09-30 | 46 | $121.6M | 0 | |
| 2021-06-30 | 49 | $129.7M | 96 | |
| 2021-03-31 | 44 | $120.1M | 18 | |
| 2020-12-31 | 43 | $111.5M | 20 | |
| 2020-09-30 | 37 | $93.0M | 10 | |
| 2020-06-30 | 35 | $88.1M | 22 | |
| 2020-03-31 | 35 | $72.5M | 38 | |
| 2019-12-31 | 42 | $97.1M | 0 |
Aufman Associates Inc's most significant position changes for 2026-03-31: Sold out: Intl Business Machines CORP (IBM); Sold out: Unitedhealth Group INC (UNH); Trim: Seagate Technology Holdings plc (STX) — shares -0.08%; Trim: Vanguard S&p 500 ETF (VOO) — shares -1.30%; Add: Schwab Fndmntl US Lrg Co ETF (FNDX) — shares +18.11%.
| # | Ticker | Issuer | Weight Change | Shares Change | Action |
|---|---|---|---|---|---|
| 1 | STX | Seagate Technology Holdings plc | +3.3% | -0.08% | Trim |
| 2 | FNDX | Schwab Fndmntl US Lrg Co ETF | +1.3% | +18.11% | Add |
| 3 | MRNA | Moderna INC | +0.7% | +31.94% | Add |
| 4 | XOM | Exxon Mobil CORP | +0.2% | -4.28% | Trim |
| 5 | MTX | Minerals Technologies INC | +0.1% | — | Unchanged |
| 6 | CVX | Chevron CORP | +0.1% | +0.33% | Add |
| 7 | COP | Conocophillips | 0% | — | Unchanged |
| 8 | JNJ | Johnson & Johnson | 0% | -5.63% | Trim |
| 9 | MRK | Merck & Co. INC. | 0% | -0.78% | Trim |
| 10 | VZ | Verizon Communications INC | 0% | — | Unchanged |
| 11 | CAT | Caterpillar INC | 0% | — | Unchanged |
| 12 | TSM | Taiwan Semiconductor-sp Adr | 0% | — | Unchanged |
| 13 | PPL | Ppl CORP | 0% | — | Unchanged |
| 14 | PEP | Pepsico INC | 0% | — | Unchanged |
| 15 | USXF | Ishares Esg Advance Msci USA | — | +9.67% | Add |
| 16 | KO | Coca-cola Co/the | — | — | Unchanged |
| 17 | ICLN | Ishares Global Clean Energy | — | — | Unchanged |
| 18 | IJR | Ishares Core S&p Small-cap E | — | +0.10% | Add |
| 19 | VXUS | Vanguard Total Intl Stock | 0% | +0.06% | Add |
| 20 | ESML | Ishares Esg Aware Msci USA S | 0% | -0.89% | Trim |
| 21 | IVE | Ishares S&p 500 Value ETF | 0% | -10.78% | Trim |
| 22 | KHC | Kraft Heinz Co/the | 0% | — | Unchanged |
| 23 | ONEQ | Fidelity Nasdaq Comp Indx | 0% | — | Unchanged |
| 24 | AMZN | Amazon.com INC | 0% | -0.14% | Trim |
| 25 | GOOGL | Alphabet Inc-cl A | 0% | -1.32% | Trim |
| 26 | ABBV | Abbvie INC | 0% | — | Unchanged |
| 27 | IWP | Ishares Russell Mid-cap Grow | 0% | — | Unchanged |
| 28 | VTI | Vanguard Total Stock Mkt ETF | 0% | +0.21% | Add |
| 29 | IJK | Ishares S&p Mid-cap 400 Grow | 0% | -30.47% | Trim |
| 30 | DIS | Walt Disney Co/the | 0% | — | Unchanged |
| 31 | AVGO | Broadcom INC | 0% | +0.05% | Add |
| 32 | PAYX | Paychex INC | 0% | — | Unchanged |
| 33 | RVTY | Revvity INC | -0.1% | — | Unchanged |
| 34 | ABT | Abbott Laboratories | -0.1% | — | Unchanged |
| 35 | SPY | Ss Spdr S&p 500 ETF Trust-us | -0.1% | -2.47% | Trim |
| 36 | IWF | Ishares Russell 1000 Growth | -0.1% | — | Unchanged |
| 37 | VEU | Vanguard Ftse All-world Ex-u | -0.1% | -1.29% | Trim |
| 38 | VUG | Vanguard Growth ETF | -0.1% | -7.81% | Trim |
| 39 | AAPL | Apple INC | -0.1% | -0.27% | Trim |
| 40 | GOOG | Alphabet Inc-cl C | -0.1% | +0.74% | Add |
| 41 | BRK-B | Berkshire Hathaway Inc-cl B | -0.2% | — | Unchanged |
| 42 | CCI | Crown Castle INC | -0.2% | -12.85% | Trim |
| 43 | MSFT | Microsoft CORP | -0.2% | +0.03% | Add |
| 44 | IVV | Ishares Core S&p 500 ETF | -0.3% | -0.99% | Trim |
| 45 | VOT | Vanguard Mid-cap Growth ETF | -0.4% | +0.16% | Add |
| 46 | VEA | Vanguard Ftse Developed ETF | -0.6% | -1.59% | Trim |
| 47 | VB | Vanguard Small-cap ETF | -0.7% | -1.02% | Trim |
| 48 | VOO | Vanguard S&p 500 ETF | -1.9% | -1.30% | Trim |
| 49 | IBM | Intl Business Machines CORP | — | EXIT | Sold out |
| 50 | UNH | Unitedhealth Group INC | — | EXIT | Sold out |
| Period | Filed | Type | EDGAR |
|---|---|---|---|
| 2026-03-31 | 2026-05-15 | 13F-HR | View on EDGAR |
| 2025-12-31 | 2026-02-11 | 13F-HR | View on EDGAR |
| 2025-09-30 | 2025-11-12 | 13F-HR | View on EDGAR |
| 2025-06-30 | 2025-08-13 | 13F-HR | View on EDGAR |
| 2025-03-31 | 2025-05-14 | 13F-HR | View on EDGAR |
| 2024-12-31 | 2025-02-12 | 13F-HR | View on EDGAR |
| 2024-09-30 | 2024-11-13 | 13F-HR | View on EDGAR |
| 2024-06-30 | 2024-08-09 | 13F-HR | View on EDGAR |
| 2024-03-31 | 2024-05-10 | 13F-HR | View on EDGAR |
| 2023-12-31 | 2024-02-14 | 13F-HR | View on EDGAR |
| 2023-09-30 | 2023-11-13 | 13F-HR | View on EDGAR |
| 2023-06-30 | 2023-08-11 | 13F-HR | View on EDGAR |
| 2023-03-31 | 2023-05-10 | 13F-HR | View on EDGAR |
| 2022-12-31 | 2023-02-08 | 13F-HR | View on EDGAR |
| 2022-09-30 | 2022-11-14 | 13F-HR | View on EDGAR |
| 2022-06-30 | 2022-08-10 | 13F-HR | View on EDGAR |
| 2022-03-31 | 2022-05-13 | 13F-HR | View on EDGAR |
| 2021-12-31 | 2022-02-09 | 13F-HR | View on EDGAR |
| 2021-09-30 | 2021-11-12 | 13F-HR | View on EDGAR |
| 2021-06-30 | 2021-08-11 | 13F-HR | View on EDGAR |
| 2021-03-31 | 2021-05-17 | 13F-HR | View on EDGAR |
| 2020-12-31 | 2021-02-10 | 13F-HR | View on EDGAR |
| 2020-09-30 | 2020-11-13 | 13F-HR | View on EDGAR |
| 2020-06-30 | 2020-08-13 | 13F-HR | View on EDGAR |
| 2020-03-31 | 2020-05-13 | 13F-HR | View on EDGAR |
| 2019-12-31 | 2020-02-06 | 13F-HR | View on EDGAR |
Institutions with a similar AUM
CIK 0001824600
Total reported value
$203.9M
3 stks
2026-03-31
AUM within 0.0% of this institution
CIK 0001868491
Total reported value
$203.7M
120 stks
2026-03-31
AUM within 0.1% of this institution
CIK 0001638049
Total reported value
$203.7M
86 stks
2025-09-30
Stale — no recent filing
AUM within 0.1% of this institution
Institutions with overlapping top holdings
CIK 0001646695
Total reported value
$2.4B
86 stks
2026-03-31
3 of the top 5 holdings overlap, including Schwab Fndmntl US Lrg Co ETF
CIK 0001666504
Total reported value
$152.8M
60 stks
2026-03-31
3 of the top 5 holdings overlap, including Vanguard S&p 500 ETF
CIK 0001696209
Total reported value
$1.3B
47 stks
2026-03-31
3 of the top 5 holdings overlap, including Vanguard S&p 500 ETF