Mattern Capital Management, LLC

In its 13F for Q2 2025 (holdings as of June 30, 2025, filed July 21, 2025), Mattern Capital Management, LLC reported 170 stock positions worth $832.4 million. Its top holding was Microsoft (MSFT) at 2.3% of the portfolio, followed by Apple (AAPL, 2.0%) and Walmart (WMT, 1.7%). Compared with Q1 2025, it opened 7 new positions, added to 136 and reduced 11. The biggest buy was a new position in JPMorgan Active Bond ETF (JBND) and the biggest sale Chubb (CB, shares −0%).

Most Recent 13F
Q2 2026
Location
LAKEWOOD, CO
CIK
0001803227
Portfolio Value
$832.4M (Q2 2025)
SEC Filing
0001725547-25-003493 ↗ filed Jul 21, 2025

Holdings Value

0$200.0M$400.0M$600.0M$800.0M$1.0B Q1 2024: $736.5M Q1 2024 Q2 2024: $723.8M Q2 2024 Q3 2024: $794.6M Q3 2024 Q4 2024: $767.4M Q4 2024 Q1 2025: $785.4M Q1 2025 Q2 2025: $832.4M $832.4M Q2 2025 Q3 2025: $850.6M Q3 2025 Q4 2025: $846.9M Q4 2025 Q1 2026: $834.9M Q1 2026 Q2 2026: $856.7M Q2 2026

Holdings 170 stocks · $832.4M
MSFT Microsoft Corp. 2.28% 38,076 $18.9M Add +1.7%
AAPL Apple Inc. 1.99% 80,752 $16.6M Add +4.0%
WMT Walmart Inc. 1.70% 144,378 $14.1M Add +2.3%
COR Cencora Inc. 1.69% 46,977 $14.1M Reduce -1.3%
COST Costco Wholesale Corp. 1.68% 14,118 $14.0M Add +0.3%
BRO Brown & Brown Inc. 1.59% 119,198 $13.2M Add +0.5%
GWW WW Grainger Inc. filed as GRAINGER W W INC 1.48% 11,812 $12.3M Add +0.5%
AVGO Broadcom Inc. 1.46% 44,109 $12.2M Add +4.4%
LOW Lowe's Cos Inc. 1.42% 53,392 $11.8M Add +1.1%
CSCO Cisco Systems Inc. 1.36% 162,846 $11.3M Add +0.2%
PSX Phillips 66 1.35% 94,198 $11.2M Add +2.2%
ADI Analog Devices Inc. 1.34% 46,940 $11.2M Add +2.0%
SPGI S&P Global Inc. 1.34% 21,166 $11.2M Add +1.2%
LIN Linde PLC 1.33% 23,624 $11.1M Add +0.5%
AFL Aflac Inc. 1.33% 105,059 $11.1M Add +1.5%
EMR Emerson Electric Co. 1.28% 79,821 $10.6M Add +0.7%
ADP Automatic Data Processing 1.27% 34,325 $10.6M Add +0.3%
BLK BlackRock Inc. 1.27% 10,080 $10.6M Add +0.6%
CB Chubb Ltd. 1.26% 36,333 $10.5M Reduce -0.1%
GD General Dynamics Corp. 1.25% 35,597 $10.4M Add +0.5%
XYL Xylem Inc. 1.24% 79,783 $10.3M Add +1.3%
TSCO Tractor Supply Company 1.24% 195,025 $10.3M Add +1.0%
SYK Stryker Corp. 1.23% 25,964 $10.3M Add +1.0%
BR Broadridge Financial Solutio 1.23% 42,259 $10.3M Add +0.3%
LHX L3HARRIS Technologies Inc. 1.21% 40,302 $10.1M Add +0.8%
CTAS Cintas Corp. 1.21% 45,286 $10.1M Add +0.3%
ICE Intercontinental Exchange Inc. 1.21% 54,858 $10.1M Add +0.5%
SHW The Sherwin-Williams Co. 1.19% 28,893 $9.9M Add +1.4%
HD Home Depot Inc. 1.19% 27,030 $9.9M Add +1.8%
NEE Nextera Energy Inc. 1.19% 142,496 $9.9M Add +1.7%
TXN Texas Instruments Inc. 1.18% 47,506 $9.9M Add +2.5%
ECL Ecolab Inc. 1.18% 36,311 $9.8M Add +0.5%
HON Honeywell International Inc. 1.17% 41,834 $9.7M Add +2.8%
ABT Abbott Laboratories 1.16% 71,147 $9.7M Add +1.0%
SBUX Starbucks Corp. 1.15% 104,270 $9.6M Add +2.7%
LMT Lockheed Martin Corp. 1.15% 20,603 $9.5M Add +1.3%
ATO Atmos Energy Corp. 1.14% 61,590 $9.5M Add +0.2%
AMGN Amgen Inc. 1.14% 33,893 $9.5M Add +2.6%
APD Air Products & Chemicals Inc. 1.12% 33,042 $9.3M Add +2.3%
PAYX Paychex Inc. 1.11% 63,344 $9.2M Add +0.5%
UNP Union Pacific Corp. 1.09% 39,549 $9.1M Add +2.5%
JKHY Jack Henry & Associates Inc. filed as HENRY JACK & ASSOC INC 1.08% 49,962 $9.0M Add +0.8%
ACN Accenture PLC Class A 1.07% 29,830 $8.9M Add +3.1%
FDS Factset Research Systems Inc. 1.07% 19,875 $8.9M Add +1.2%
WEC WEC Energy Group Inc. 1.06% 84,753 $8.8M Add +0.9%
CBSH Commerce Bancshares Inc. 1.06% 141,824 $8.8M Add +0.5%
CL Colgate-Palmolive Co. 1.06% 96,701 $8.8M Add +1.5%
MCD McDonald's Corp. 1.05% 29,970 $8.8M Add +1.4%
MDT Medtronic PLC 1.05% 100,206 $8.7M Add +1.4%
V Visa Inc. Class A 1.05% 24,580 $8.7M Add +2.3%
ITW Illinois Tool Works 1.04% 35,092 $8.7M Add +1.6%
PG The Procter & Gamble Co. 1.04% 54,366 $8.7M Add +1.1%
AWK American Water Works Co. Inc. 1.00% 60,140 $8.4M Add +0.8%
MDLZ Mondelez International Inc. Class A 1.00% 123,774 $8.3M Add +0.7%
ZTS Zoetis Inc. 1.00% 53,497 $8.3M Add +2.1%
PPG PPG Industries Inc. 1.00% 73,206 $8.3M Add +3.3%
NKE Nike Inc. Class B 0.99% 116,178 $8.3M Add +6.3%
CMS CMS Energy Corp. 0.99% 118,363 $8.2M Add +1.2%
PH Parker Hannifin Corp. 0.97% 11,532 $8.1M Add +3.9%
TROW T Rowe Price Group Inc. filed as PRICE T ROWE GROUP INC 0.96% 83,067 $8.0M Add +3.3%
JNJ Johnson & Johnson 0.96% 52,151 $8.0M Add +2.3%
CMCSA Comcast Corp. Class A 0.95% 221,484 $7.9M Add +3.6%
PLD Prologis Inc. 0.95% 74,876 $7.9M Add +1.9%
O Realty Income Corp. 0.94% 135,623 $7.8M Add +1.4%
TGT Target Corp. 0.94% 79,158 $7.8M Add +7.6%
NJR New Jersey Resources Corp. 0.93% 172,654 $7.7M Add +1.3%
CHD Church & Dwight Co. Inc. 0.92% 79,445 $7.6M Add +2.3%
PEP Pepsico Inc. 0.91% 57,452 $7.6M Add +3.6%
MKC McCormick & Co.-Non VTG SHRS 0.89% 98,199 $7.4M Add +1.8%
FRT Federal Realty Invs Trust 0.85% 74,108 $7.0M Add +2.4%
APH Amphenol Corp. Class A 0.83% 70,079 $6.9M Add +24.6%
UNH Unitedhealth Group Inc. 0.75% 20,054 $6.3M Add +4.5%
BDX Becton Dickinson and Co. 0.74% 35,526 $6.1M Add +5.7%
WRB WR Berkley Corp. filed as BERKLEY W R CORP 0.72% 81,220 $6.0M Add +10.4%
VOO Vanguard S&P 500 ETF 0.71% 10,470 $5.9M Reduce -0.1%
AVIG Avantis Core Fixed Income 0.71% 141,794 $5.9M Add +17.9%
LLY Eli Lilly & Co. 0.68% 7,240 $5.6M Add +11.2%
JBND JPMorgan Active Bond ETF 0.67% 104,228 $5.6M New
ROP Roper Technologies Inc. 0.67% 9,801 $5.6M Add +33.4%
MA Mastercard Inc. Class A 0.63% 9,259 $5.2M Add +22.8%
BF.B Brown-Forman Corp. Class B 0.61% 188,788 $5.1M Add +4.7%
QQQ Invesco QQQ Trust Series 1 0.48% 7,177 $4.0M Add +40.5%
AMZN Amazon.com Inc. 0.37% 13,883 $3.0M Add +22.4%
DIA SS SPDR Dow Jones Indus Avg filed as SPDR DOW JONES INDL AVERAGE 0.33% 6,297 $2.8M New
GOOG Alphabet Inc. Class C 0.24% 11,093 $2.0M Add +86.4%
IWD iShares Russell 1000 Value E 0.23% 10,013 $1.9M Add +12.9%
VTEB Vanguard Tax-Exempt Bond ETF 0.23% 39,250 $1.9M Add +6.4%
DECK Deckers Outdoor Corp. 0.20% 16,177 $1.7M Add +2.4%
NFLX Netflix Inc. 0.20% 1,228 $1.6M Add +8.1%
SPY SS SPDR S&P 500 ETF Trust-US 0.19% 2,565 $1.6M Add +64.4%
TSLA Tesla Inc. 0.19% 4,969 $1.6M Add +15.2%
AVLV Avantis US Large Cap Value 0.17% 20,298 $1.4M Add +3.6%
SHY iShares 1-3 Year Treasury Bo 0.16% 16,345 $1.4M Add +46.8%
IWF iShares Russell 1000 Growth 0.16% 3,160 $1.3M Add +27.2%
VTI VG Morningstar TS MKT ETF-US 0.16% 4,382 $1.3M No change
TSM Taiwan Semiconductor-SP ADR 0.16% 5,866 $1.3M Add +19.6%
VNLA Janus Henderson Short Durati 0.16% 26,989 $1.3M Add +34.2%
DLTR Dollar Tree Inc. 0.16% 13,132 $1.3M Add +8.7%
JPM JPMorgan Chase & Co. 0.16% 4,469 $1.3M Add +31.7%
META Meta Platforms Inc. Class A 0.16% 1,751 $1.3M Add +14.1%

Show all 170 holdings

Portfolio Sells Q1 2025 → Q2 2025
CB Chubb Ltd. Reduce -0.1% 1.26% −0.13
UPS United Parcel Service Class B Reduce -68.4% 0.03% −0.07
DFAT Dimensional US Target Value Reduce -35.0% 0.06% −0.03
QUAL iShares MSCI USA Quality Fac Reduce -14.5% 0.10% −0.02
DGRO iShares Core Dividend Growth Reduce -19.8% 0.03% −0.01
VLUE iShares MSCI USA Value Facto Reduce -16.5% 0.04% −0.01
INMU iShares Intermediate Muni Inc. Reduce -3.0% 0.05% −0.00
IVW iShares S&P 500 Growth ETF Reduce -22.5% 0.03% −0.00
SUB iShares Short-Term National Reduce -0.0% 0.03% −0.00
COR Cencora Inc. Reduce -1.3% 1.69% +0.01
VOO Vanguard S&P 500 ETF Reduce -0.1% 0.71% +0.03

Portfolio Buys Q1 2025 → Q2 2025
JBND JPMorgan Active Bond ETF New 0.67% +0.67
AVGO Broadcom Inc. Add +4.4% 1.46% +0.56
MSFT Microsoft Corp. Add +1.7% 2.28% +0.49
APH Amphenol Corp. Class A Add +24.6% 0.83% +0.36
DIA SS SPDR Dow Jones Indus Avg New 0.33% +0.33
EMR Emerson Electric Co. Add +0.7% 1.28% +0.17
QQQ Invesco QQQ Trust Series 1 Add +40.5% 0.48% +0.17
ADI Analog Devices Inc. Add +2.0% 1.34% +0.16
LHX L3HARRIS Technologies Inc. Add +0.8% 1.21% +0.15
TXN Texas Instruments Inc. Add +2.5% 1.18% +0.12
GOOG Alphabet Inc. Class C Add +86.4% 0.24% +0.12
WMT Walmart Inc. Add +2.3% 1.70% +0.12
ROP Roper Technologies Inc. Add +33.4% 0.67% +0.12
PH Parker Hannifin Corp. Add +3.9% 0.97% +0.11
NKE Nike Inc. Class B Add +6.3% 0.99% +0.11
NVDA Nvidia Corp. Add +117.3% 0.15% +0.10
MA Mastercard Inc. Class A Add +22.8% 0.63% +0.10
AMZN Amazon.com Inc. Add +22.4% 0.37% +0.09
CSCO Cisco Systems Inc. Add +0.2% 1.36% +0.08
SPY SS SPDR S&P 500 ETF Trust-US Add +64.4% 0.19% +0.08
AVIG Avantis Core Fixed Income Add +17.9% 0.71% +0.08
HON Honeywell International Inc. Add +2.8% 1.17% +0.07
BLK BlackRock Inc. Add +0.6% 1.27% +0.06
NFLX Netflix Inc. Add +8.1% 0.20% +0.06
TSM Taiwan Semiconductor-SP ADR Add +19.6% 0.16% +0.06
WRB WR Berkley Corp. Add +10.4% 0.72% +0.05
JPM JPMorgan Chase & Co. Add +31.7% 0.16% +0.05
TSLA Tesla Inc. Add +15.2% 0.19% +0.05
IWF iShares Russell 1000 Growth Add +27.2% 0.16% +0.05
XOM Exxon Mobil Corp. New 0.05% +0.05
SHY iShares 1-3 Year Treasury Bo Add +46.8% 0.16% +0.05
META Meta Platforms Inc. Class A Add +14.1% 0.16% +0.04
JTEK JPMorgan US Tech Leaders New 0.04% +0.04
XYL Xylem Inc. Add +1.3% 1.24% +0.04
DLTR Dollar Tree Inc. Add +8.7% 0.16% +0.04
IGSB iShares 1-5Y Inv Grade Corp. Add +68.4% 0.10% +0.04
DG Dollar General Corp. Add +8.5% 0.15% +0.04
NVO Novo-Nordisk A/S-Spons ADR Add +57.3% 0.11% +0.04
VNLA Janus Henderson Short Durati Add +34.2% 0.16% +0.03
INTU Intuit Inc. Add +11.7% 0.12% +0.03
GOOGL Alphabet Inc. Class A New 0.03% +0.03
CTAS Cintas Corp. Add +0.3% 1.21% +0.03
PLTR Palantir Technologies Inc. Class A Add +5.7% 0.08% +0.03
ULTA Ulta Beauty Inc. Add +8.5% 0.12% +0.03
DFEV Dimensional Emrg MRKT Val New 0.03% +0.03
VO Vngrd Mrngstr MD-Cap ETF-Usd New 0.03% +0.03
SHV iShares 0-1 Year Treasury Bo Add +69.3% 0.07% +0.03
AXP American Express Co. Add +19.7% 0.10% +0.02
ASML ASML Holding NV-NY Reg SHS Add +19.9% 0.09% +0.02
TROW T Rowe Price Group Inc. Add +3.3% 0.96% +0.02

All Filings

QuarterPositions13F Reported ValueTop Holdings
Q2 2026 166$856.7MAAPL, GWW, MSFT, UNH, COST
Q1 2026 170$834.9MAAPL, PSX, MSFT, COST, COR
Q4 2025 170$846.9MAAPL, MSFT, WMT, COR, AVGO
Q3 2025 172$850.6MAAPL, MSFT, WMT, COR, LOW
Q2 2025 170$832.4MMSFT, AAPL, WMT, COR, COST
Q1 2025 163$785.4MAAPL, BRO, MSFT, COST, COR
Q4 2024 160$767.4MAAPL, MSFT, COST, WMT, GWW
Q3 2024 156$794.6MAAPL, MSFT, LOW, COST, AFL
Q2 2024 157$723.8MAAPL, MSFT, COST, PSX, LOW
Q1 2024 157$736.5MMSFT, AAPL, PSX, LOW, GWW