Q2 2026 13F · SEC CIK 1802376

Mattern Wealth Management LLC

Wealth managerFiled 2026-07-23 for Q2 2026. Open the filing ↗ · All SEC filings ↗

Reported 13F value: $609.3M
Reported positions: 183
Top holdings a year, 3 yrs: +11.9%
Assets under management: $579.0M

Mattern Wealth Management LLC is a wealth manager that reported 183 positions worth $609.3M in its Q2 2026 13F, filed 2026-07-23. Its largest holdings were Dimensional U.s. Core Equity 2 (DFAC, 13.8%), Avantis U.s. Equity ETF (AVUS, 8.0%), Dfa Dimensional Intl Core Equit (DFIC, 6.2%). A portfolio copying its top holdings returned 11.9% a year over the last 3 years, against 20.4% for the S&P 500.

Mattern Wealth Management LLC holdings largest 50 of 183 positions.

Weights are shares of the filer's total reported 13F value, compared with Q1 2026. Share changes may reflect splits; weight changes also reflect price moves. A 13F shows long US-listed positions only, up to 135 days after the fact.

Mattern Wealth Management LLC 13F holdings
Stock	% of 13F value	Q1 2026	Shares	Share change	Reported value
DFACDimensional U.s. Core Equity 2	13.8%	14.0%	1,895,431	+2.3%	$84.1M
AVUSAvantis U.s. Equity ETF	8.0%	8.0%	379,466	+3.2%	$48.6M
DFICDfa Dimensional Intl Core Equit	6.2%	6.8%	1,021,560	+4.0%	$38.1M
DFSDDimensional ETF Trust	4.7%	5.6%	604,523	+0.2%	$28.9M
DFNMDimensional ETF Trust	4.4%	5.0%	548,877	+3.5%	$26.5M
QQQInvesco Qqq Tr	4.2%	3.5%	35,150	+13.9%	$25.9M
AAPLApple Inc	3.6%	3.5%	74,854	+5.4%	$21.7M
MSFTMicrosoft Corp	3.4%	3.7%	55,467	+8.5%	$20.7M
DFGXDimensional ETF Trust	3.4%	3.8%	384,379	+4.4%	$20.6M
DFEMDimensional	2.7%	2.1%	404,466	+31.7%	$16.4M
DGCBDimensional ETF Trust	2.5%	2.8%	275,196	+3.4%	$15.0M
DFCFDimensional ETF Trust	2.4%	2.8%	348,041	+1.3%	$14.7M
DFIVDimensional ETF Trust	1.9%	1.5%	216,224	+51.3%	$11.7M
CATCaterpillar Inc Com	1.7%	1.3%	9,771	+0.0%	$10.4M
GOOGLAlphabet Inc	1.5%	1.4%	25,286	+3.0%	$9.0M
AVSFAmerican Centy ETF Tr	1.5%	1.9%	191,929	-6.5%	$8.9M
JPMJpmorgan Chase & Co	1.4%	1.5%	26,466	+1.4%	$8.7M
DFAUDimensional US Core Equity Market ETF	1.4%	1.3%	161,282	+6.6%	$8.3M
DUSBDimensional ETF Trust	1.3%	1.4%	154,640	+5.6%	$7.9M
NVDANvidia Corporation Com	1.3%	1.1%	39,059	+16.9%	$7.8M
AMZNAmazon Com Inc Com	1.2%	1.1%	29,425	+5.7%	$7.0M
COSTCostco Whsl Corp New	1.0%	1.2%	6,258	+0.9%	$5.9M
RDVYFirst Trust Rising Dividend Achievers Et	0.9%	0.8%	66,401	+17.7%	$5.4M
AVLVAmerican Centy Tr ETF Avantis U S Large	0.8%	0.5%	53,141	+82.4%	$4.8M
VTIVanguard Index Fds	0.8%	0.8%	12,922	+1.5%	$4.8M
AVIGAmerican Centy ETF Tr	0.8%	0.9%	114,663	+1.1%	$4.7M
WMTWalmart Inc	0.7%	0.9%	39,744	+4.3%	$4.5M
SCHDSchwab Strategic Tr	0.7%	—	133,048	—	$4.2M
IVVIshares Core S&p 500 ETF	0.7%	0.7%	5,325	+1.5%	$4.0M
VVisa Inc Com Cl A	0.6%	0.6%	11,491	+15.0%	$3.9M
IVWIshares	0.6%	0.6%	27,280	+0.0%	$3.8M
FNDXSchwab Strategic Tr	0.6%	—	120,000	—	$3.7M
ADIAnalog Devices Inc	0.6%	0.6%	9,385	+2.6%	$3.7M
XLKState Street Technology Select Sector Sp	0.6%	0.5%	19,324	+0.0%	$3.7M
MINTPimco ETF Tr	0.6%	—	34,705	—	$3.5M
AVGOBroadcom Inc	0.5%	0.5%	8,860	+17.9%	$3.3M
LLYLilly Eli & Co	0.5%	0.5%	2,534	-1.5%	$3.0M
XOMExxon Mobil Corp	0.5%	0.7%	21,428	+0.2%	$2.9M
CVXChevron Corp New	0.5%	0.6%	16,837	+7.5%	$2.8M
PSXPhillips 66	0.4%	0.5%	15,103	-0.3%	$2.6M
JNJJohnson & Johnson	0.4%	0.5%	9,980	+2.2%	$2.5M
MCDMcdonalds Corp Com	0.3%	0.5%	7,604	-1.3%	$2.1M
BRK-BBerkshire Hathaway Inc Del	0.3%	0.4%	4,088	-5.0%	$2.0M
LOWLowes Cos Inc	0.3%	0.4%	8,984	-3.8%	$2.0M
QUALIshares Msci USA Quality Factor ETF	0.3%	0.3%	8,226	-1.2%	$1.8M
TBILRbb Fd Inc	0.3%	—	35,063	—	$1.7M
NEENextera Energy Inc Com	0.3%	0.3%	19,517	+17.0%	$1.7M
BLKBlackrock Inc	0.3%	—	1,688	—	$1.6M
EMREmerson Elec Co Com	0.3%	0.3%	10,972	+0.0%	$1.6M
LHXL3harris Technologies Inc	0.3%	0.3%	5,379	+10.2%	$1.6M

What Mattern Wealth Management LLC bought and sold in Q2 2026, against Q1 2026.

New positions

Q1 2026's filing was too long to tell new positions apart.

Share counts compared with the Q1 2026 13F; a split also changes share counts. The latest filing lists more than 50 positions, so a position that left the top 50 may still be held.

How the holdings did against the S&P 500.

1 year: +13.6% /yr; S&P 500 +20.1%
3 years: +11.9% /yr; S&P 500 +20.4%
5 years: +5.7% /yr; S&P 500 +11.6%

A portfolio of the filer's 20 largest 13F positions, weighted by value and rebuilt each quarter on the day the filing became public. 13Fs show long US-listed positions only, so this is an estimate of the stock picks, not the fund's reported returns.

Reported 13F value by quarter.

13F value by quarter
Quarter	13F value	Positions
Q2 2026	$609.3M	183
Q1 2026	$512.9M	158
Q4 2025	$519.5M	156
Q3 2025	$500.9M	156
Q2 2025	$480.5M	161
Q1 2025	$452.0M	166
Q4 2024	$453.4M	169
Q3 2024	$455.0M	174
Q2 2024	$416.0M	172
Q1 2024	$411.1M	177
Q4 2023	$389.0M	172
Q3 2023	$341.1M	167

Questions about Mattern Wealth Management LLC's portfolio

What stocks does Mattern Wealth Management LLC own?

Mattern Wealth Management LLC's latest 13F, for Q2 2026 and filed Jul 23, 2026, lists 183 positions worth $609.3M. The largest are Dimensional U.s. Core Equity 2 (DFAC) at 13.8%, Avantis U.s. Equity ETF (AVUS) at 8.0%, Dfa Dimensional Intl Core Equit (DFIC) at 6.2%, Dimensional ETF Trust (DFSD) at 4.7% and Dimensional ETF Trust (DFNM) at 4.4%.

What did Mattern Wealth Management LLC buy last quarter?

In Q2 2026, Mattern Wealth Management LLC added American Centy Tr ETF Avantis U S Large (AVLV) (+82.4% shares), Dimensional ETF Trust (DFIV) (+51.3% shares) and Dimensional (DFEM) (+31.7% shares), compared with its Q1 2026 filing.

What did Mattern Wealth Management LLC sell last quarter?

In Q2 2026, Mattern Wealth Management LLC cut from its top 50 Dimensional ETF Trust (DFGR), cut from its top 50 Abbott Laboratories (ABT), cut from its top 50 Stryker Corporation (SYK), cut from its top 50 Ishares S&p 500 Value ETF (IVE), cut from its top 50 Automatic Data Processing Inc Com (ADP) and American Centy ETF Tr (AVSF) (-6.5% shares), compared with its Q1 2026 filing.

How has Mattern Wealth Management LLC's portfolio performed?

A portfolio copying Mattern Wealth Management LLC's 20 largest 13F holdings each quarter, from the day each filing was public, returned +11.9% a year over the last 3 years, against +20.4% for the S&P 500. Over 1 year: +13.6% against +20.1%. Over 5 years: +5.7% a year against +11.6%.

When is Mattern Wealth Management LLC's next 13F filing due?

13F filings are due 45 days after each quarter ends. Mattern Wealth Management LLC's filing for the quarter ending Sep 30, 2026 is due by Nov 14, 2026; this page updates the day after it is published.

How much money does Mattern Wealth Management LLC manage?

Mattern Wealth Management LLC reported $579.0M of regulatory assets under management on its latest SEC Form ADV. Its 13F, which covers only US-listed stocks and options, totals $609.3M.