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 ETF Trust (DFAC, 13.8%), Avantis U.S. Equity ETF (AVUS, 8.0%), Dimensional ETF Trust (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 ETF Trust	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
DFICDimensional ETF Trust	6.2%	6.8%	1,021,560	+4.0%	$38.1M
DFSDDimensional Short-Duration Fixed Income	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 Global ex US Core Fixed Inco	3.4%	3.8%	384,379	+4.4%	$20.6M
DFEMDimensional ETF Trust	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	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 ETF Trust	1.4%	1.3%	161,282	+6.6%	$8.3M
DUSBDimensional Ultrashort Fixed Income ETF	1.3%	1.4%	154,640	+5.6%	$7.9M
NVDANvidia Corporation	1.3%	1.1%	39,059	+16.9%	$7.8M
AMZNAmazon Com Inc	1.2%	1.1%	29,425	+5.7%	$7.0M
COSTCostco Wholesale Corporation	1.0%	1.2%	6,258	+0.9%	$5.9M
RDVYFirst Tr Exchange Traded Fd	0.9%	0.8%	66,401	+17.7%	$5.4M
AVLVAmerican Centy ETF Tr	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 Tr	0.7%	0.7%	5,325	+1.5%	$4.0M
VVisa Inc	0.6%	0.6%	11,491	+15.0%	$3.9M
IVWIshares Tr	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
XLKSelect Sector Spdr Tr	0.6%	0.5%	19,324	+0.0%	$3.7M
MINTPimco Enhanced Short Maturity Active Exc	0.6%	—	34,705	—	$3.5M
AVGOBroadcom Inc	0.5%	0.5%	8,860	+17.9%	$3.3M
LLYEli Lilly & 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 Corporation	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	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 Tr	0.3%	0.3%	8,226	-1.2%	$1.8M
TBILRbb Fd Inc	0.3%	—	35,063	—	$1.7M
NEENextera Energy Inc	0.3%	0.3%	19,517	+17.0%	$1.7M
BLKBlackrock Inc	0.3%	—	1,688	—	$1.6M
EMREmerson Elec Co	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, bought the trading day after each 13F was filed and held until the next one was: what copying this filer could have earned. 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 ETF Trust (DFAC) at 13.8%, Avantis U.S. Equity ETF (AVUS) at 8.0%, Dimensional ETF Trust (DFIC) at 6.2%, Dimensional Short-Duration Fixed Income (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 ETF Tr (AVLV) (+82.4% shares), Dimensional ETF Trust (DFIV) (+51.3% shares) and Dimensional ETF Trust (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 Tr (IVE), cut from its top 50 Automatic Data Processing in (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.