Institutional Manager · CIK 0001802376

Mattern Wealth Management LLC

LAWRENCE, KS · File #028-19875

Latest AUM

$519.5M

Positions

156

Top-10 Concentration

63.7%

Filings

Portfolio Value Over Time

2024-03

2024-06

2024-09

2024-12

2025-03

2025-06

2025-09

2025-12

Biggest QoQ Changes

Ranked by conviction flow (share change × current price) so mark-to-market moves don't dominate. Price effect column shows how much of the $ change was just the stock moving.

Action	Issuer	Ticker / CUSIP	Δ Shares	Flow ($)	Price Effect
ADD	DIMENSIONAL ETF TRUST	25434V575	+36,175	+$1.9M	-$415,685
ADD	DIMENSIONAL ETF TRUST	25434V864	+33,150	+$1.6M	-$134,919
ADD	SELECT SECTOR SPDR TR	81369Y803	+9,662	+$1.4M	-$1.3M
ADD	DIMENSIONAL ETF TRUST	25434V708	+30,752	+$1.2M	+$1.8M
ADD	AMERICAN CENTY ETF TR	025072885	+9,351	+$1.0M	+$1.1M
ADD	DIMENSIONAL ETF TRUST	25434V567	+14,674	+$795,884	-$282,695
ADD	AMERICAN CENTY ETF TR	025072687	+16,702	+$786,412	-$22,903
ADD	DIMENSIONAL ETF TRUST	25434V799	+20,672	+$712,357	+$1.6M
NEW	AMERICAN CENTY ETF TR	025072695	+12,793	+$591,548	$0
ADD	DIMENSIONAL ETF TRUST	25434V872	+13,349	+$568,133	-$64,967

Sector Allocation

Technology

11.7%$60.8M

Financials

5.5%$28.8M

Industrials

2.6%$13.7M

Consumer Discretionary

1.9%$9.6M

1.8%$9.5M

1.6%$8.5M

1.4%$7.3M

0.4%$2.3M

Communication Services

0.3%$1.3M

Utilities

0.1%$518,365

Real Estate

0.1%$489,863

Filing History

Jan 16, 202613F HOLDINGS REPORTQ/E Dec 2025156 pos · $519.5M
Oct 20, 202513F HOLDINGS REPORTQ/E Sep 2025156 pos · $500.9M
Jul 17, 202513F HOLDINGS REPORTQ/E Jun 2025161 pos · $480.5M
Apr 23, 202513F HOLDINGS REPORTQ/E Mar 2025166 pos · $452.0M
Jan 22, 202513F HOLDINGS REPORTQ/E Dec 2024169 pos · $453.4M
Oct 21, 202413F HOLDINGS REPORTQ/E Sep 2024174 pos · $455.0M
Jul 17, 202413F HOLDINGS REPORTQ/E Jun 2024172 pos · $416.0M
May 14, 202413F HOLDINGS REPORTQ/E Mar 2024177 pos · $411.1M
Nov 1, 202313F HOLDINGS REPORTQ/E Dec 2023167 pos · $341.1M

Top 20 Holdings — Dec 2025

#	Issuer	Ticker	Shares	Value	% of Portfolio
1	DIMENSIONAL ETF TRUST	25434V708	1,833,381	$72.6M	15.58%
2	AMERICAN CENTY ETF TR	025072885	363,928	$40.7M	8.73%
3	DIMENSIONAL ETF TRUST	25434V799	969,014	$33.4M	7.17%
4	DIMENSIONAL ETF TRUST	25434V864	595,313	$28.5M	6.13%
5	DIMENSIONAL ETF TRUST	25434V849	531,074	$25.6M	5.49%
6	MICROSOFT CORP	MSFT	50,765	$24.6M	5.27%
7	APPLE INC	AAPL	72,164	$19.6M	4.21%
8	INVESCO QQQ TR	IVZ	31,130	$19.1M	4.11%
9	DIMENSIONAL ETF TRUST	25434V575	349,900	$18.4M	3.95%
10	DIMENSIONAL ETF TRUST	25434V872	338,205	$14.4M	3.09%
11	DIMENSIONAL ETF TRUST	25434V567	247,863	$13.4M	2.89%
12	DIMENSIONAL ETF TRUST	25434V732	293,027	$9.7M	2.08%
13	AMERICAN CENTY ETF TR	025072687	193,960	$9.1M	1.96%
14	JPMORGAN CHASE & CO.	VYLD	25,733	$8.3M	1.78%
15	DIMENSIONAL ETF TRUST	25434V591	155,946	$7.9M	1.70%
16	ALPHABET INC	GOOG	24,654	$7.7M	1.66%
17	DIMENSIONAL ETF TRUST	25434V807	141,357	$7.1M	1.51%
18	DIMENSIONAL ETF TRUST	25434V104	150,493	$7.0M	1.51%
19	AMAZON COM INC	AMZN	27,987	$6.5M	1.39%
20	NVIDIA CORPORATION	NVDA	33,488	$6.2M	1.34%