DOSSIER · 13F-HR · Q3 2026

William Mack & Associates, Inc.

$319M in tracked AUM across 875 positions as of Q3 2026.

WM
CIK 0002096700 · last filed Sep 30, 2026
Total AUM
$319M
as of Q3 2026
Holdings
875
—
positions
Whale Score
52
52
tracked
Activity
—
no data
changes this Q
AI Analysis · Q3 2026
Comprehensive SEC 13F Analysis: William Mack & Associates, Inc.
1. Portfolio Overview

William Mack & Associates, Inc. manages a concentrated portfolio with a total value of $82.37 million as of September 30, 2025. This represents a robust growth of +19.3% from the previous quarter's value of $69.03 million. The portfolio consists of 43 holdings, displaying a strategy that heavily favors Exchange Traded Funds (ETFs) over individual stock selection.

The portfolio is characterize...

2. Key Holdings

The portfolio is dominated by three major positions that define its risk/return profile:

  • VCSH (Vanguard Short-Term Corporate Bond ETF): This is the largest holding, valued at $38.31 million, representing a massive 46.51% of the portfolio. The firm increased this position by 10.5% ($3.83M), signaling a strong preference for short-duration, investment-grade credit risk. This suggests a defensive posture regarding interest rate fluctuations.
  • CWB (SPDR Bloomberg Convertible Securities ETF): The second-largest holding at $13.46 million (16.35% allocation). This position was increased by 24.1% ($3.56M). CWB provides exposure to convertible bonds, offering a hybrid of equity upside potential and fixed-income yield, aligning with a strategy of capital preservation with growth participation.
  • DISV (Dimensional International Value ETF): Comprising 11.03% ($9.09M) of the portfolio, this position saw the largest percentage increase among the top holdings, growing by 41.7% ($3.17M). This indicates a tactical tilt towards international value stocks, diversifying away from domestic markets.
Analysis generated by 13F Insight from SEC Form 13F filing data · Q3 2026. Methodology

Quarter at a glance — Q3 2026

Position-change comparison pending.

No quarter-over-quarter changes available.

Top 10 holdings

By portfolio weight as of Q3 2026.

#HoldingValueSharesWeight
01
VCSH
VANGUARD SCOTTSDALE FDS
$50M645K15.6%
02
VEA
VANGUARD TAX-MANAGED FDS
$47M665K14.7%
03
VO
VANGUARD INDEX FDS
$41M526K12.9%
04
DISV
DIMENSIONAL ETF TRUST
$27M635K8.6%
05
FNDF
SCHWAB STRATEGIC TR
$18M331K5.6%
06
SCHG
SCHWAB STRATEGIC TR
$13M354K4.0%
07
CWB
SPDR SERIES TRUST
$10M102K3.2%
08
AAPL
APPLE INC
$10M31K3.2%
09
MSFT
MICROSOFT CORP
$6M12K1.9%
10
JPIE
J P MORGAN EXCHANGE TRADED F
$4M99K1.4%

Filing history

2026Q3Sep 30
$319M▲ 12.5%
875 positionsView →
2026Q2Jun 30
$284M▲ 62.2%
108 positionsView →
2026Q1Mar 31
$175M▼ 17.7%
73 positionsView →
2025Q4Dec 31
$212M▲ 157.9%
92 positionsView →
2025Q3Sep 30
$82M▲ 19.3%
43 positionsLocked
2025Q2Jun 30
$69M▲ 27.8%
38 positionsLocked
2025Q1Mar 31
$54M▲ 31.7%
33 positionsLocked
2024Q4Dec 31
$41M—
29 positionsLocked