Largest positions
| Issuer | Class | Value | Share |
|---|---|---|---|
| Vanguard Scottsdale FdsSHRT TRM CORP BD | SHRT TRM CORP BD | $48.2M | 17.0% |
| Vanguard Tax-managed FdsVAN FTSE DEV MKT | VAN FTSE DEV MKT | $42.5M | 15.0% |
| Vanguard Index FdsMID CAP ETF | MID CAP ETF | $40M | 14.1% |
| Dimensional ETF TrustINTL SMALL CAP V | INTL SMALL CAP V | $23.6M | 8.3% |
| Schwab Strategic TRFUNDAMENTAL INTL | FUNDAMENTAL INTL | $15.3M | 5.4% |
| SPDR Series TrustST STR CONV ETF | ST STR CONV ETF | $12.9M | 4.5% |
| Schwab Strategic TRUS LCAP GR ETF | US LCAP GR ETF | $12.9M | 4.5% |
| Apple Inc.COM | COM | $10.2M | 3.6% |
| Microsoft Corp.COM | COM | $4.29M | 1.5% |
| Vanguard Mun BD FdsTAX EXEMPT BD | TAX EXEMPT BD | $3.55M | 1.3% |
| Vanguard Index FdsLARGE CAP ETF | LARGE CAP ETF | $3.35M | 1.2% |
| Amazon Com Inc.COM | COM | $2.6M | 0.9% |
| Cohen & Steers ETF TrustREAL EST ACT ETF | REAL EST ACT ETF | $2.58M | 0.9% |
| Tesla Inc.COM | COM | $2.52M | 0.9% |
| Alphabet Inc.CAP STK CL A | CAP STK CL A | $2.52M | 0.9% |
| J P Morgan Exchange Traded FINCOME ETF | INCOME ETF | $2.32M | 0.8% |
| Vanguard Index FdsS&P 500 ETF SHS | S&P 500 ETF SHS | $2.27M | 0.8% |
| Dimensional ETF TrustUS SMALL CAP ETF | US SMALL CAP ETF | $2.1M | 0.7% |
| Schwab Strategic TRUS LCAP VA ETF | US LCAP VA ETF | $1.93M | 0.7% |
| Vanguard Index FdsGROWTH ETF | GROWTH ETF | $1.71M | 0.6% |
| iShares TRCORE S&P MCP ETF | CORE S&P MCP ETF | $1.55M | 0.5% |
| Vanguard Index FdsTOTAL STK MKT | TOTAL STK MKT | $1.41M | 0.5% |
| Accenture PLC IrelandSHS CLASS A | SHS CLASS A | $1.39M | 0.5% |
| Nvidia CorporationCOM | COM | $1.38M | 0.5% |
| Vanguard Intl Equity Index FFTSE SMCAP ETF | FTSE SMCAP ETF | $1.37M | 0.5% |
| Vanguard BD Index FdsTOTAL BND MRKT | TOTAL BND MRKT | $1.36M | 0.5% |
| JPMORGAN Chase & COCOM | COM | $1.22M | 0.4% |
| iShares TRCORE S&P500 ETF | CORE S&P500 ETF | $1.15M | 0.4% |
| State Str SPDR S&P 500 ETF TTR UNIT | TR UNIT | $1.1M | 0.4% |
| Schwab Strategic TRUS SML CAP ETF | US SML CAP ETF | $1.02M | 0.4% |
| Meta Platforms Inc.CL A | CL A | $997K | 0.4% |
| Coca Cola Cons Inc.COM | COM | $971K | 0.3% |
| Schwab Strategic TRUS LRG CAP ETF | US LRG CAP ETF | $943K | 0.3% |
| Vanguard Index FdsMCAP VL IDXVIP | MCAP VL IDXVIP | $940K | 0.3% |
| Alphabet Inc.CAP STK CL C | CAP STK CL C | $906K | 0.3% |
| SPDR Series TrustST STR P500ETF | ST STR P500ETF | $828K | 0.3% |
| Innovator ETFS TrustPOWER BUFFER SET | POWER BUFFER SET | $786K | 0.3% |
| Calamos ETF TRCEF INC ARB ETF | CEF INC ARB ETF | $784K | 0.3% |
| Micron Technology Inc.COM | COM | $779K | 0.3% |
| Vanguard Index FdsSML CP GRW ETF | SML CP GRW ETF | $732K | 0.3% |
| SPDR Series TrustST STR SP500FF | ST STR SP500FF | $727K | 0.3% |
| Invesco Qqq TRUNIT SER 1 | UNIT SER 1 | $719K | 0.3% |
| DTE Energy COCOM | COM | $703K | 0.2% |
| Vanguard Intl Equity Index FFTSE EMR MKT ETF | FTSE EMR MKT ETF | $640K | 0.2% |
| Capital Group New GeographySHS | SHS | $633K | 0.2% |
| Intel Corp.COM | COM | $616K | 0.2% |
| iShares TRCORE MSCI TOTAL | CORE MSCI TOTAL | $604K | 0.2% |
| iShares TRRUS MID CAP ETF | RUS MID CAP ETF | $547K | 0.2% |
| iShares TRRUSSELL 3000 ETF | RUSSELL 3000 ETF | $536K | 0.2% |
| American Centy ETF TRUS EQT ETF | US EQT ETF | $535K | 0.2% |
Vanguard Scottsdale FdsSHRT TRM CORP BD$48.2M
- Class
- SHRT TRM CORP BD
- Share
- 17.0%
Vanguard Tax-managed FdsVAN FTSE DEV MKT$42.5M
- Class
- VAN FTSE DEV MKT
- Share
- 15.0%
Vanguard Index FdsMID CAP ETF$40M
- Class
- MID CAP ETF
- Share
- 14.1%
Dimensional ETF TrustINTL SMALL CAP V$23.6M
- Class
- INTL SMALL CAP V
- Share
- 8.3%
Schwab Strategic TRFUNDAMENTAL INTL$15.3M
- Class
- FUNDAMENTAL INTL
- Share
- 5.4%
SPDR Series TrustST STR CONV ETF$12.9M
- Class
- ST STR CONV ETF
- Share
- 4.5%
Schwab Strategic TRUS LCAP GR ETF$12.9M
- Class
- US LCAP GR ETF
- Share
- 4.5%
Apple Inc.COM$10.2M
- Class
- COM
- Share
- 3.6%
Microsoft Corp.COM$4.29M
- Class
- COM
- Share
- 1.5%
Vanguard Mun BD FdsTAX EXEMPT BD$3.55M
- Class
- TAX EXEMPT BD
- Share
- 1.3%
Vanguard Index FdsLARGE CAP ETF$3.35M
- Class
- LARGE CAP ETF
- Share
- 1.2%
Amazon Com Inc.COM$2.6M
- Class
- COM
- Share
- 0.9%
Cohen & Steers ETF TrustREAL EST ACT ETF$2.58M
- Class
- REAL EST ACT ETF
- Share
- 0.9%
Tesla Inc.COM$2.52M
- Class
- COM
- Share
- 0.9%
Alphabet Inc.CAP STK CL A$2.52M
- Class
- CAP STK CL A
- Share
- 0.9%
J P Morgan Exchange Traded FINCOME ETF$2.32M
- Class
- INCOME ETF
- Share
- 0.8%
Vanguard Index FdsS&P 500 ETF SHS$2.27M
- Class
- S&P 500 ETF SHS
- Share
- 0.8%
Dimensional ETF TrustUS SMALL CAP ETF$2.1M
- Class
- US SMALL CAP ETF
- Share
- 0.7%
Schwab Strategic TRUS LCAP VA ETF$1.93M
- Class
- US LCAP VA ETF
- Share
- 0.7%
Vanguard Index FdsGROWTH ETF$1.71M
- Class
- GROWTH ETF
- Share
- 0.6%
iShares TRCORE S&P MCP ETF$1.55M
- Class
- CORE S&P MCP ETF
- Share
- 0.5%
Vanguard Index FdsTOTAL STK MKT$1.41M
- Class
- TOTAL STK MKT
- Share
- 0.5%
Accenture PLC IrelandSHS CLASS A$1.39M
- Class
- SHS CLASS A
- Share
- 0.5%
Nvidia CorporationCOM$1.38M
- Class
- COM
- Share
- 0.5%
Vanguard Intl Equity Index FFTSE SMCAP ETF$1.37M
- Class
- FTSE SMCAP ETF
- Share
- 0.5%
Vanguard BD Index FdsTOTAL BND MRKT$1.36M
- Class
- TOTAL BND MRKT
- Share
- 0.5%
JPMORGAN Chase & COCOM$1.22M
- Class
- COM
- Share
- 0.4%
iShares TRCORE S&P500 ETF$1.15M
- Class
- CORE S&P500 ETF
- Share
- 0.4%
State Str SPDR S&P 500 ETF TTR UNIT$1.1M
- Class
- TR UNIT
- Share
- 0.4%
Schwab Strategic TRUS SML CAP ETF$1.02M
- Class
- US SML CAP ETF
- Share
- 0.4%
Meta Platforms Inc.CL A$997K
- Class
- CL A
- Share
- 0.4%
Coca Cola Cons Inc.COM$971K
- Class
- COM
- Share
- 0.3%
Schwab Strategic TRUS LRG CAP ETF$943K
- Class
- US LRG CAP ETF
- Share
- 0.3%
Vanguard Index FdsMCAP VL IDXVIP$940K
- Class
- MCAP VL IDXVIP
- Share
- 0.3%
Alphabet Inc.CAP STK CL C$906K
- Class
- CAP STK CL C
- Share
- 0.3%
SPDR Series TrustST STR P500ETF$828K
- Class
- ST STR P500ETF
- Share
- 0.3%
Innovator ETFS TrustPOWER BUFFER SET$786K
- Class
- POWER BUFFER SET
- Share
- 0.3%
Calamos ETF TRCEF INC ARB ETF$784K
- Class
- CEF INC ARB ETF
- Share
- 0.3%
Micron Technology Inc.COM$779K
- Class
- COM
- Share
- 0.3%
Vanguard Index FdsSML CP GRW ETF$732K
- Class
- SML CP GRW ETF
- Share
- 0.3%
SPDR Series TrustST STR SP500FF$727K
- Class
- ST STR SP500FF
- Share
- 0.3%
Invesco Qqq TRUNIT SER 1$719K
- Class
- UNIT SER 1
- Share
- 0.3%
DTE Energy COCOM$703K
- Class
- COM
- Share
- 0.2%
Vanguard Intl Equity Index FFTSE EMR MKT ETF$640K
- Class
- FTSE EMR MKT ETF
- Share
- 0.2%
Capital Group New GeographySHS$633K
- Class
- SHS
- Share
- 0.2%
Intel Corp.COM$616K
- Class
- COM
- Share
- 0.2%
iShares TRCORE MSCI TOTAL$604K
- Class
- CORE MSCI TOTAL
- Share
- 0.2%
iShares TRRUS MID CAP ETF$547K
- Class
- RUS MID CAP ETF
- Share
- 0.2%
iShares TRRUSSELL 3000 ETF$536K
- Class
- RUSSELL 3000 ETF
- Share
- 0.2%
American Centy ETF TRUS EQT ETF$535K
- Class
- US EQT ETF
- Share
- 0.2%
The share class is shown on a wider screen.
The 50 largest of 108 positions by value, with holdings of the same security combined. The 108 largest are in this firm's machine-readable record. Share counts and quarter-on-quarter changes for each position are on EDGAR. View the full information table on EDGAR
This filing
- Form
- 13F-HR
- CIK
- 2096700
- File number
- 028-25873
- Options
- 0 call, 0 put
- In the 25 largest
- 86.2%
- Prior quarter
- $175M at 31 March 2026
- Positions opened
- 37
- Positions closed
- 2
Common questions
What are William Mack & Associates’ 13F holdings worth?
$284 million across 108 positions for the quarter ended 30 June 2026.
What is William Mack & Associates’ largest 13F holding?
VANGUARD SCOTTSDALE FDS (SHRT TRM CORP BD) was the largest position at $48.2 million, or 17.0% of reported 13F value, as of 30 June 2026.
How concentrated is William Mack & Associates’ 13F portfolio?
The ten largest positions accounted for 75.2% of reported value and the twenty-five largest for 86.2%, across 108 positions as of 30 June 2026.
Does Form 13F show everything William Mack & Associates manages?
No. Form 13F covers only long positions in exchange-traded securities over which the manager has investment discretion, valued at quarter end. It excludes cash, most bonds, private funds, and any assets the firm does not have discretion over, so it is neither the firm's total assets nor any individual client's portfolio.
How often does William Mack & Associates file its 13F?
Every quarter. Managers file within 45 days of each quarter's end, so the figures are a snapshot that changes between filings. This page shows the quarter ended 30 June 2026.
Answered from this filing and the prior quarter's.