William Mack & Associates, Inc. — 13F Holdings & Portfolio

CIK 2096700 · latest 13F-HR filed 2026-10-27

William Mack & Associates, Inc. manages $319.3M in 13F-reported U.S. long-equity assets across 875 reported positions as of its 2026-09-30 13F-HR filing. Its largest disclosed positions are VCSH (15.61%), VEA (14.71%), VO (12.91%). Quarter over quarter (versus its 2026-06-30 filing) the fund opened 769 new positions and exited 2; 28 existing positions rose in reported value and 33 fell.

AUM is the long-equity portion reported on Form 13F-HR. Excludes short positions, cash, foreign holdings, and non-13F assets. For informational purposes only — not investment advice.

AUM

$319.3M

Long-equity book

Holdings

875

Distinct positions

Period

2026-09-30

Filed 2026-10-27

Q/Q Activity

+769 / −2 / ↑28 / ↓33

vs 2026-06-30

Portfolio charts

Latest quarter's book, what changed, and how the portfolio has evolved across filings.

Portfolio map

Q3 26

VCSH15.6% · +6%VEA14.7% · +11%VO12.9% · +6%DISV8.6% · +8%FNDF5.6% · +15%SCHG4.0% · -7%CWB3.2% · -15%AAPL3.2% · -13%MSFT1.9% · +1%JPIE1.4% · +96%VV1.1% · 0%VTEB1.0% · -1%CSRE0.8% · +12%AMZN0.8% · -1%GOOGL0.8% · +2%VOO0.7% · +1%TSLA0.6% · -3%ACN0.6% · +0%DFSV0.6% · -0%NVDA0.6% · +21%SCHV0.6% · +3%VUG0.6% · -1%IJH0.5% · +5%SCHX0.5% · +50%META0.4% · +12%VTI0.4% · -3%VSS0.4% · 0%BND0.4% · -3%IVV0.4% · +3%SPYM0.4% · +43%JPM0.4% · -3%SPY0.4% · 0%SCHA0.3% · +7%COKE0.3% · +0%VOE0.3% · -2%CCEF0.3% · +14%GOOG0.3% · -4%PSTP0.2% · -0%MU0.2% · +10%QQQ0.2% · +4%SPYX0.2% · -1%SPGM0.2% · +59%VBK0.2% · -3%VWO0.2% · 0%XOM0.2% · new CGCB0.2% · +79%CGNG0.2% · 0%DTE0.2% · +0%SFLR0.2% · +10%INTC0.2% · +2%AVUS0.2% · 0%IWR0.2% · +0%IWV0.2% · -5%XCNY0.1% · new AMD0.1% · +1%TSM0.1% · +0%DIS0.1% · +1%SPCX0.1% · new VB0.1% · 0%JNJ0.1% · +5%

Box size = position value; colour = change in share count vs the prior quarter (green added, red trimmed, blue new). Rows split across managers or share classes are combined. Click a box for the stock.

Sector mix

% of 13F value

Sectors from each company's SIC code; funds and ETFs grouped separately.

Biggest buys and sells

Q2 26 → Q3 26

Estimated from the change in shares held × the quarter-end price, so price moves alone don't count as buying. New and exited positions are included.

13F assets and positions

4 quarters

Total reported 13F value (bars) and number of positions (line) each quarter. Value changes include market moves.

Top positions over time

reported value

The eight largest current positions, valued at each quarter end.

Concentration

top 10 = 71.1%

Cumulative share of the portfolio held in the largest N positions.

Firm Profile & Key People

As of the firm’s regulatory filing dated Aug 25, 2026.

Assets Under Management

$1.03B

Discretionary

$1.03B

Employees

Accounts

952

Address

1301 W. LONG LAKE RD., SUITE 115
TROY, MI 48098

Phone

(248) 643-4310

Website

WWW.WMACK.COM

Name	Title / Status	Ownership	Type
BUGENSKI, THEODORE, KARL Control	VICE PRESIDENT since Dec 1992	10–25%	Individual
MACK, WILLIAM Control	PRESIDENT since Apr 1992	75% or more	Individual
DICKINSON, CHARLES, DAVID	CHIEF COMPLIANCE OFFICER since Dec 2022	Less than 5%	Individual

Ownership & leadership changes · 1 filing with changes since Mar 28, 2012

From the firm’s regulatory filings, newest first. Dates are filing dates: a filing that no longer lists someone does not say when they left.

Dec 12, 2022 filing

AddedDICKINSON, CHARLES, DAVID · CHIEF COMPLIANCE OFFICER · Less than 5%
ChangedBUGENSKI, THEODORE, KARL · title CHIEF COMPLIANCE OFFICER, VICE PRESIDENT → VICE PRESIDENT

Mar 28, 2012 filing (earliest on record)

ListedBUGENSKI, THEODORE, KARL · CHIEF COMPLIANCE OFFICER, VICE PRESIDENT · 10–25% · control person
ListedMACK, WILLIAM · PRESIDENT · 75% or more · control person

Quarter-over-quarter changes

Changes in reported position value vs the prior 13F, so price moves count too, not just shares bought or sold.

Top Adds (vs prior quarter)

VANGUARD TAX-MANAGED FDS$4.4M +10.4%
DIMENSIONAL ETF TRUST$3.8M +16.2%
SCHWAB STRATEGIC TR$2.6M +16.8%
J P MORGAN EXCHANGE TRADED F$2.1M +90.6%
MICROSOFT CORP$1.7M +38.6%

Show all 28 →

Top Trims

SPDR SERIES TRUST-$2.6M -20.1%
TESLA INC-$467.3K -18.5%
BLACKROCK ETF TRUST II-$378.5K -87.6%
PIMCO ETF TR-$337.8K -66.2%
PIMCO ETF TR-$299.5K -56.8%

Show all 33 →

New Positions

Show all 769 →

Exited Positions

DIMENSIONAL ETF TRUST$2.1M
U S GOLD CORP$0

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#	Issuer	Symbol	CUSIP	Value	Δ

William Mack & Associates, Inc. Holdings (2026-09-30)

#	Issuer	Symbol	CUSIP	Value	Weight	Shares	Type
1	VANGUARD SCOTTSDALE FDS	VCSH	92206C409	$49.8M	15.61%	645,277	SH
2	VANGUARD TAX-MANAGED FDS	VEA	921943858	$46.9M	14.71%	664,902	SH
3	VANGUARD INDEX FDS	VO	922908629	$41.2M	12.91%	525,567	SH
4	DIMENSIONAL ETF TRUST	DISV	25434V781	$27.5M	8.60%	634,583	SH
5	SCHWAB STRATEGIC TR	FNDF	808524755	$17.8M	5.58%	331,480	SH
6	SCHWAB STRATEGIC TR	SCHG	808524300	$12.7M	3.99%	354,351	SH
7	SPDR SERIES TRUST	CWB	78464A359	$10.3M	3.23%	101,851	SH
8	APPLE INC	AAPL	037833100	$10.3M	3.22%	30,835	SH
9	MICROSOFT CORP	MSFT	594918104	$5.9M	1.86%	11,601	SH
10	J P MORGAN EXCHANGE TRADED F	JPIE	46641Q159	$4.4M	1.39%	98,704	SH
11	VANGUARD INDEX FDS	VV	922908637	$3.4M	1.07%	9,734	SH
12	VANGUARD MUN BD FDS	VTEB	922907746	$3.3M	1.03%	69,638	SH
13	COHEN & STEERS ETF TRUST	CSRE	19249U104	$2.7M	0.85%	101,413	SH
14	AMAZON COM INC	AMZN	023135106	$2.7M	0.84%	10,774	SH
15	ALPHABET INC	GOOGL	02079K305	$2.5M	0.78%	7,195	SH
16	VANGUARD INDEX FDS	VOO	922908363	$2.3M	0.73%	3,329	SH
17	TESLA INC	TSLA	88160R101	$2.1M	0.64%	5,798	SH
18	ACCENTURE PLC IRELAND	ACN	G1151C101	$2.0M	0.64%	11,168	SH
19	DFA INVT DIMENSIONS GROUP IN	DFSV	25239Y170	$2.0M	0.63%	53,754	SH
20	NVIDIA CORPORATION	NVDA	67066G104	$1.9M	0.60%	8,362	SH
21	SCHWAB STRATEGIC TR	SCHV	808524409	$1.9M	0.60%	57,034	SH
22	VANGUARD INDEX FDS	VUG	922908736	$1.8M	0.56%	19,709	SH
23	ISHARES TR	IJH	464287507	$1.5M	0.47%	21,050	SH
24	SCHWAB STRATEGIC TR	SCHX	808524201	$1.4M	0.45%	48,054	SH
25	META PLATFORMS INC	META	30303M102	$1.4M	0.45%	1,977	SH
26	VANGUARD INDEX FDS	VTI	922908769	$1.4M	0.43%	3,696	SH
27	VANGUARD INTL EQUITY INDEX F	VSS	922042718	$1.4M	0.43%	8,879	SH
28	VANGUARD BD INDEX FDS	BND	921937835	$1.3M	0.39%	17,966	SH
29	ISHARES TR	IVV	464287200	$1.2M	0.38%	1,584	SH
30	SPDR SERIES TRUST	SPYM	78464A854	$1.2M	0.38%	13,478	SH
31	JPMORGAN CHASE & CO	JPM	46625H100	$1.2M	0.38%	3,620	SH
32	STATE STR SPDR S&P 500 ETF T	SPY	78462F103	$1.1M	0.35%	1,475	SH
33	SCHWAB STRATEGIC TR	SCHA	808524607	$985.4K	0.31%	30,199	SH
34	COCA COLA CONS INC	COKE	191098102	$963.8K	0.30%	5,092	SH
35	VANGUARD INDEX FDS	VOE	922908512	$915.9K	0.29%	4,684	SH
36	CALAMOS ETF TR	CCEF	12811T407	$855.6K	0.27%	29,866	SH
37	ALPHABET INC	GOOG	02079K107	$838.0K	0.26%	2,459	SH
38	INNOVATOR ETFS TRUST	PSTP	45783Y723	$798.9K	0.25%	21,333	SH
39	MICRON TECHNOLOGY INC	MU	595112103	$791.7K	0.25%	743	SH
40	INVESCO QQQ TR	QQQ	46090E103	$751.5K	0.24%	1,016	SH
41	SPDR SERIES TRUST	SPYX	78468R796	$736.7K	0.23%	11,791	SH
42	SPDR INDEX SHS FDS	SPGM	78463X475	$705.3K	0.22%	8,154	SH
43	VANGUARD INDEX FDS	VBK	922908595	$658.1K	0.21%	1,948	SH
44	VANGUARD INTL EQUITY INDEX F	VWO	922042858	$636.4K	0.20%	10,730	SH
45	EXXONMOBIL HOLDINGS CORP	XOM	30233Q108	$633.1K	0.20%	3,890	SH
46	CAPITAL GRP FIXED INCM ETF T	CGCB	14020Y508	$616.6K	0.19%	24,682	SH
47	CAPITAL GROUP NEW GEOGRAPHY	CGNG	14021N105	$616.3K	0.19%	16,907	SH
48	DTE ENERGY CO	DTE	233331107	$563.2K	0.18%	4,624	SH
49	INNOVATOR ETFS TRUST	SFLR	45783Y673	$563.1K	0.18%	14,457	SH
50	INTEL CORP	INTC	458140100	$541.8K	0.17%	4,506	SH

Filing History

Period	Filed	AUM	Holdings	Accession
2026-09-30	2026-10-27	$319.3M	875	0001754960-26-000953
2026-06-30	2026-07-10	$283.7M	108	0001754960-26-000473
2026-03-31	2026-04-14	$174.9M	73	0001754960-26-000244
2025-12-31	2026-02-09	$212.5M	92	0001754960-26-000159

Filer Information

Address

1301 W. LONG LAKE, STE # 115
TROY, MI 48098

Phone

(248) 643-4310

Filing Manager

William Mack & Associates, Inc.

TROY, MI

Signatory

Aryn Sands

Agent