William Mack & Associates, Inc. holds a focused book of 108 stocks worth $283.7M as of Q2 2026 (disclosed Jul 10, 2026, a ~10-day 13F lag). This quarter they opened Vanguard Total Stock MKT ETF and trimmed Ishares Russell Mid-Cap ETF. Their largest long position is Vanguard S/T Corp Bond ETF at 17% of the equity book.
Top-heavy: focused book
Share of the disclosed book in its largest positions. A higher top-5 share means a more concentrated, higher-conviction portfolio.
14% mapped to company sectors
+5 sectors below the cut, 1% together
Direct operating-company sectors from our SIC-based security master. ETF/fund and unclassified holdings stay visible separately; this is not ETF look-through exposure.
Estimated $ traded · quarter-end prices (an exit at the prior quarter-end), no cost basis
Other tracked managers holding the same core names as William Mack & Associates, Inc.
| Manager / fund | Shared names | Their $ in those |
|---|---|---|
| Donor Advised Charitable Giving, Inc. | 11 / 80 | $4.5B |
| Hoffman, Alan N Investment Management | 10 / 80 | $162.1M |
| Swiss Re Ltd | 28 / 80 | $1.0B |
| Kearns & Associates LLC | 19 / 80 | $194.9M |
| 9823 Capital, L.P. | 9 / 80 | $126.5M |
| Vestwell Advisors, LLC | 8 / 80 | $310.1M |
| Johnson Financial Group, LLC | 46 / 80 | $1.6B |
| Stembrook Asset Management, LLC | 18 / 80 | $97.5M |
Ranked by the share of each fund's own book sitting in the names it shares with William Mack & Associates, Inc.: only funds sharing at least a tenth of the book qualify. Index giants, bank custody books and market makers are excluded. They hold everything, so their overlap says nothing.
Bars show each stock's share of the portfolio. Click a row for its position history.
| # | Security | Value | Shares | % Port | Last move | History |
|---|---|---|---|---|---|---|
| 1 | Vanguard Scottsdale FDS SHRT TRM CORP BD | $48.2M | 610.2K | 17.0% | ▲+54% Added · +213K sh | |
| 2 | Vanguard Tax-Managed FDS VAN FTSE DEV MKT | $42.5M | 596.7K | 15.0% | ▲+55% Added · +211K sh | |
| 3 | Vanguard Index FDS MID CAP ETF | $40.0M | 496.4K | 14.1% | ▲+526% Added · +417K sh | |
| 4 | Dimensional ETF Trust INTL SMALL CAP V | $23.6M | 588.9K | 8.3% | ▲+58% Added · +216K sh | |
| 5 | Schwab Strategic TR FUNDAMENTAL INTL | $15.3M | 289.1K | 5.4% | ▲+62% Added · +110K sh | |
| 6 | SPDR Series Trust ST STR CONV ETF | $12.9M | 119.6K | 4.5% | ▲+0.6% Added · +761 sh | |
| 7 | Schwab Strategic TR US LCAP GR ETF | $12.9M | 379.8K | 4.5% | ▲+74% Added · +162K sh | |
| 8 | Apple Inc COM | $10.2M | 35.4K | 3.6% | ▲+17% Added · +5K sh | |
| 9 | Microsoft Corp COM | $4.3M | 11.5K | 1.5% | ▲+23% Added · +2K sh | |
| 10 | Vanguard Mun BD FDS TAX EXEMPT BD | $3.6M | 70.2K | 1.3% | ▲+3.6% Added · +2K sh | |
| 11 | Vanguard Index FDS LARGE CAP ETF | $3.3M | 9.7K | 1.2% | ▲+0.1% Added · +6 sh | |
| 12 | Amazon Com Inc COM | $2.6M | 10.9K | 0.9% | ▲+76% Added · +5K sh | |
| 13 | Cohen & Steers ETF Trust REAL EST ACT ETF | $2.6M | 90.8K | 0.9% | ▲+159% Added · +56K sh | |
| 14 | Tesla Inc COM | $2.5M | 6.0K | 0.9% | ▲+41% Added · +2K sh | |
| 15 | Alphabet Inc CAP STK CL A | $2.5M | 7.1K | 0.9% | ▲+9.2% Added · +597 sh | |
| 16 | J P Morgan Exchange Traded F INCOME ETF | $2.3M | 50.5K | 0.8% | ▲+83% Added · +23K sh | |
| 17 | Vanguard Index FDS S&P 500 ETF SHS | $2.3M | 3.3K | 0.8% | ▲+33% Added · +818 sh | |
| 18 | Dimensional ETF Trust US SMALL CAP ETF | $2.1M | 54.0K | 0.7% | ▲+105% Added · +28K sh | |
| 19 | Schwab Strategic TR US LCAP VA ETF | $1.9M | 55.4K | 0.7% | ▲+14% Added · +7K sh | |
| 20 | Vanguard Index FDS GROWTH ETF | $1.7M | 19.8K | 0.6% | ▲+632% Added · +17K sh | |
| 21 | Ishares TR CORE S&P MCP ETF | $1.6M | 20.1K | 0.5% | ▲+6.9% Added · +1K sh | |
| 22 | Vanguard Index FDS TOTAL STK MKT | $1.4M | 3.8K | 0.5% | ▲New New position | |
| 23 | Accenture PLC Ireland SHS CLASS A | $1.4M | 11.2K | 0.5% | ▲+1.5% Added · +165 sh | |
| 24 | Nvidia Corporation COM | $1.4M | 6.9K | 0.5% | ▲+50% Added · +2K sh | |
| 25 | Vanguard Intl Equity Index F FTSE SMCAP ETF | $1.4M | 8.9K | 0.5% | ▲+24% Added · +2K sh | |
| 26 | Vanguard BD Index FDS TOTAL BND MRKT | $1.4M | 18.5K | 0.5% | ▲+93% Added · +9K sh | |
| 27 | JPMorgan Chase & Co COM | $1.2M | 3.7K | 0.4% | ▲+51% Added · +1K sh | |
| 28 | Ishares TR CORE S&P500 ETF | $1.1M | 1.5K | 0.4% | ▲+25% Added · +307 sh | |
| 29 | State STR SPDR S&P 500 ETF T TR UNIT | $1.1M | 1.5K | 0.4% | ▲+15% Added · +188 sh | |
| 30 | Schwab Strategic TR US SML CAP ETF | $1.0M | 28.1K | 0.4% | ▲+38% Added · +8K sh | |
| 31 | Meta Platforms Inc CL A | $997K | 1.8K | 0.4% | ▲+16% Added · +248 sh | |
| 32 | Coca Cola Cons Inc COM | $971K | 5.1K | 0.3% | ▲+0.1% Added · +8 sh | |
| 33 | Schwab Strategic TR US LRG CAP ETF | $943K | 32.1K | 0.3% | ▲New New position | |
| 34 | Vanguard Index FDS MCAP VL IDXVIP | $940K | 4.8K | 0.3% | ▲+30% Added · +1K sh | |
| 35 | Alphabet Inc CAP STK CL C | $906K | 2.6K | 0.3% | ▲+71% Added · +1K sh | |
| 36 | SPDR Series Trust ST STR P500ETF | $828K | 9.4K | 0.3% | ▲+65% Added · +4K sh | |
| 37 | Innovator Etfs Trust POWER BUFFER SET | $786K | 21.4K | 0.3% | —Held | |
| 38 | Calamos ETF TR CEF INC ARB ETF | $784K | 26.2K | 0.3% | ▲New New position | |
| 39 | Micron Technology Inc COM | $779K | 675 | 0.3% | —Held | |
| 40 | Vanguard Index FDS SML CP GRW ETF | $732K | 2.0K | 0.3% | ▲+13% Added · +235 sh | |
| 41 | SPDR Series Trust ST STR SP500FF | $727K | 11.9K | 0.3% | ▲+9.7% Added · +1K sh | |
| 42 | Invesco QQQ TR UNIT SER 1 | $719K | 977 | 0.3% | ▲+101% Added · +490 sh | |
| 43 | Dte Energy Co COM | $703K | 4.6K | 0.2% | ▲+35% Added · +1K sh | |
| 44 | Vanguard Intl Equity Index F FTSE EMR MKT ETF | $640K | 10.7K | 0.2% | ▲+60% Added · +4K sh | |
| 45 | Capital Group New Geography SHS | $633K | 16.9K | 0.2% | ▲+115% Added · +9K sh | |
| 46 | Intel Corp COM | $616K | 4.4K | 0.2% | ▲New New position | |
| 47 | Ishares TR CORE MSCI TOTAL | $604K | 6.3K | 0.2% | ▲New New position | |
| 48 | Ishares TR RUS MID CAP ETF | $547K | 5.0K | 0.2% | ▼−2.7% Reduced · −139 sh | |
| 49 | Ishares TR RUSSELL 3000 ETF | $536K | 1.3K | 0.2% | ▼−6.0% Reduced · −80 sh | |
| 50 | American Centy ETF TR US EQT ETF | $535K | 4.2K | 0.2% | ▲+15% Added · +543 sh |
This fund page is the Follow view. The Build view lets your agent pull holdings, quarter changes, overlap, and source filings through API or MCP.
curl -H "Authorization: Bearer YOUR_API_KEY" \ "https://arkolith.com/api/v1/funds/2096700/holdings"
Use Arkolith to show William Mack & Associates, Inc.'s latest holdings, largest changes, and filing provenance.
As-of date vs the date the SEC received each filing
Reported 13F total per quarter. Raw filing totals can include option notional.
| Quarter | As of | Filed | Lag | Positions | Value | Form |
|---|---|---|---|---|---|---|
| Q2 2026 | Jun 30, 2026 | Jul 10, 2026 | 10d | 108 | $283.7M | 13F-HR |
| Q1 2026 | Mar 31, 2026 | Apr 14, 2026 | 14d | 73 | $174.9M | 13F-HR |
| Q4 2025 | Dec 31, 2025 | Feb 9, 2026 | 40d | 92 | $212.5M | 13F-HR |
| Q3 2025 | Sep 30, 2025 | Nov 14, 2025 | 45d | 88 | $185.9M | 13F-HR |
| Q2 2025 | Jun 30, 2025 | Nov 24, 2025 | 147d | 78 | $157.4M | 13F-HR |
| Q1 2025 | Mar 31, 2025 | Nov 24, 2025 | 238d | 70 | $116.8M | 13F-HR |
| Q4 2024 | Dec 31, 2024 | Nov 24, 2025 | 328d | 64 | $95.5M | 13F-HR |
Holdings from SEC EDGAR 13F-HR filings, updated quarterly, filed up to 45 days after quarter-end. Public domain. The book and weighting are long equity only; disclosed put/call options are listed separately and excluded from those totals. Price-derived performance is withheld until the price-source policy and freshness gate are green.