Mattern Capital Management, Llc
Institutional manager — quarterly 13F holdings, Q ending 2026-03-31
Reported value
$834.9M
Q ending 2026-03-31
Prior quarter
$846.9M
Q ending 2025-12-31
Change
-1.4% QoQ · +6.3% YoY
Positions
170
reported holdings
Largest positions
Top 100 of 170 reported positions by value, Q ending 2026-03-31. A manager can hold shares, calls and puts on the same security at once — such positions are listed as separate rows. Type: Shares = common stock, Put/Call = option positions (valued at the underlying), Principal = debt. Tickers link to stock pages where covered.
| Holding | Ticker | Type | Value ▼ | Shares |
|---|---|---|---|---|
| Apple Inc | AAPL | Shares | $19.7M | 78K |
| Phillips 66 | PSX | Shares | $16.1M | 89K |
| Microsoft Corp | MSFT | Shares | $15.3M | 41K |
| Costco Wholesale Corporation | COST | Shares | $14.4M | 14K |
| Cencora Inc | COR | Shares | $13.2M | 42K |
| Ww Grainger Inc | GWW | Shares | $13.1M | 12K |
| Wec Energy Group Inc | WEC | Shares | $12.7M | 110K |
| Nextera Energy Inc | NEE | Shares | $12.4M | 134K |
| Cms Energy Corp | CMS | Shares | $12.4M | 160K |
| Lowes Cos Inc | LOW | Shares | $12.3M | 52K |
| Aflac Inc | AFL | Shares | $12.1M | 111K |
| L3Harris Technologies Inc | LHX | Shares | $12.0M | 35K |
| Linde Plc | Shares | $11.9M | 24K | |
| American Wtr Wks Co Inc New | AWK | Shares | $11.9M | 88K |
| Chubb Ltd Switz | Shares | $11.8M | 36K | |
| Broadcom Inc | AVGO | Shares | $11.5M | 37K |
| General Dynamics Corp | GD | Shares | $11.3M | 33K |
| Atmos Energy Corp | ATO | Shares | $11.0M | 60K |
| Walmart Inc | WMT | Shares | $11.0M | 88K |
| Abbott Laboratories | ABT | Shares | $10.9M | 106K |
| Motorola Solutions Inc | MSI | Shares | $10.7M | 25K |
| Unitedhealth Group Inc | UNH | Shares | $10.5M | 39K |
| Constellation Energy Corp | CEG | Shares | $10.4M | 37K |
| Roper Technologies Inc | ROP | Shares | $10.3M | 29K |
| Broadridge Finl Solutions In | BR | Shares | $10.2M | 63K |
| Factset Resh Sys Inc | FDS | Shares | $10.1M | 47K |
| Automatic Data Processing In | ADP | Shares | $10.0M | 49K |
| Intuit | INTU | Shares | $10.0M | 23K |
| Blackrock Inc | BLK | Shares | $10.0M | 10K |
| New Jersey Res Corp | NJR | Shares | $9.9M | 180K |
| Paychex Inc | PAYX | Shares | $9.9M | 107K |
| Trane Technologies Plc | Shares | $9.8M | 24K | |
| Waste Mgmt Inc Del | WM | Shares | $9.7M | 42K |
| Prologis Inc. | PLD | Shares | $9.6M | 72K |
| Accenture Plc Ireland | Shares | $9.5M | 48K | |
| Ecolab Inc | ECL | Shares | $9.4M | 36K |
| Sherwin Williams Co | SHW | Shares | $9.4M | 29K |
| Brown & Brown Inc | BRO | Shares | $9.3M | 143K |
| S&P Global Inc | SPGI | Shares | $9.3M | 22K |
| Mcdonalds Corp | MCD | Shares | $9.3M | 30K |
| Illinois Tool Wks Inc | ITW | Shares | $9.2M | 35K |
| Intercontinental Exchange In | ICE | Shares | $9.2M | 58K |
| Pepsico Inc | PEP | Shares | $9.2M | 59K |
| Xylem Inc | XYL | Shares | $9.0M | 76K |
| Home Depot Inc | HD | Shares | $9.0M | 27K |
| Tractor Supply Co | TSCO | Shares | $9.0M | 198K |
| Colgate Palmolive Co | CL | Shares | $8.9M | 104K |
| Eli Lilly & Co | LLY | Shares | $8.8M | 10K |
| Stryker Corporation | SYK | Shares | $8.8M | 27K |
| Cintas Corp | CTAS | Shares | $8.7M | 52K |
| Medtronic Plc | Shares | $8.7M | 100K | |
| Johnson & Johnson | JNJ | Shares | $8.6M | 35K |
| Church & Dwight Co Inc | CHD | Shares | $8.5M | 91K |
| Analog Devices Inc | ADI | Shares | $8.4M | 27K |
| Amgen Inc | AMGN | Shares | $8.4M | 24K |
| Procter & Gamble Co | PG | Shares | $8.4M | 58K |
| Henry Jack & Assoc Inc | JKHY | Shares | $8.2M | 52K |
| Zoetis Inc | ZTS | Shares | $8.2M | 69K |
| Visa Inc | V | Shares | $8.1M | 27K |
| Parker-Hannifin Corp | PH | Shares | $8.1M | 9K |
| Mondelez Intl Inc | MDLZ | Shares | $8.1M | 141K |
| Ppg Inds Inc | PPG | Shares | $8.1M | 76K |
| Commerce Bancshares Inc | CBSH | Shares | $8.0M | 162K |
| Mastercard Incorporated | MA | Shares | $8.0M | 16K |
| Texas Instrs Inc | TXN | Shares | $7.8M | 40K |
| Cisco Sys Inc | CSCO | Shares | $7.8M | 101K |
| Berkley W R Corp | WRB | Shares | $7.5M | 113K |
| Nike Inc | NKE | Shares | $7.1M | 135K |
| Amphenol Corp | APH | Shares | $6.7M | 53K |
| Becton Dickinson & Co | BDX | Shares | $6.6M | 42K |
| Vanguard Index Fds | VOO | Shares | $6.3M | 10K |
| Mccormick & Co Inc | MKC | Shares | $6.2M | 124K |
| American Centy Etf Tr | AVIG | Shares | $6.1M | 146K |
| J P Morgan Exchange Traded F | JBND | Shares | $5.8M | 108K |
| Federal Rlty Invt Tr New | FRT | Shares | $5.8M | 54K |
| Realty Income Corp | O | Shares | $5.6M | 92K |
| Wisdomtree Tr | USFR | Shares | $3.5M | 69K |
| Invesco Qqq Tr | QQQ | Shares | $3.1M | 5K |
| Amazon Com Inc | AMZN | Shares | $3.1M | 15K |
| State Str Spdr Dow Jones Ind | DIA | Shares | $2.9M | 6K |
| Janus Detroit Str Tr | VNLA | Shares | $2.8M | 58K |
| Netflix Inc. | NFLX | Shares | $2.7M | 28K |
| Ishares Tr | TFLO | Shares | $2.7M | 52K |
| American Centy Etf Tr | AVLV | Shares | $2.5M | 31K |
| Vanguard Mun Bd Fds | VTEB | Shares | $2.3M | 46K |
| Conocophillips | COP | Shares | $2.3M | 17K |
| Chevron Corporation | CVX | Shares | $2.2M | 11K |
| Ishares Tr | IWD | Shares | $2.2M | 10K |
| Alphabet Inc | GOOG | Shares | $2.1M | 7K |
| Salesforce Inc | CRM | Shares | $2.0M | 11K |
| Taiwan Semiconductor Manufac | TSM | Shares | $1.9M | 6K |
| Dimensional Etf Trust | DUHP | Shares | $1.8M | 50K |
| Vertex Pharmaceuticals Inc | VRTX | Shares | $1.7M | 4K |
| Novo-Nordisk A S | NVO | Shares | $1.7M | 46K |
| Tyler Technologies Inc | TYL | Shares | $1.7M | 5K |
| Asml Hldg Nv | Shares | $1.5M | 1K | |
| Jpmorgan Chase & Co | JPM | Shares | $1.5M | 5K |
| Msci Inc | MSCI | Shares | $1.5M | 3K |
| State Str Spdr S&P 500 Etf T | SPY | Shares | $1.5M | 2K |
| Berkshire Hathaway Inc Del | BRK/B | Shares | $1.4M | 3K |
Values as reported in public regulatory filings (USD); holdings are reported quarterly, up to 45 days after quarter end, and may contain reporting errors. Nothing here is investment advice.