EdgeMarket › What Mattern Capital Management, Llc reported owning
What Mattern Capital Management, Llc reported owning
As filed on Form 13F for the quarter ending 2026-03-31, up to 45 days after that date. Long-only US-listed equity — shorts, bonds, cash and non-US listings are not on the form, so this is one leg of the book, not the book.
Reported value
834.9MPositions
170Quarter
2026-03-31Shown below
50largest by value
| holding | value | % of book | shares | price | 1y |
|---|---|---|---|---|---|
| AAPL Apple Inc. | 19.7M | 2.4% | 77.6K | 309.35 | +36.9% |
| PSX Phillips 66 | 16.1M | 1.9% | 88.6K | 242.87 | +96.5% |
| MSFT MICROSOFT CORP | 15.3M | 1.8% | 41.3K | 483.24 | -4.4% |
| COST COSTCO WHOLESALE CORP /NEW | 14.4M | 1.7% | 14.4K | 947.74 | -4.7% |
| COR Cencora, Inc. | 13.2M | 1.6% | 42.0K | 318.04 | +4.7% |
| GWW W.W. GRAINGER, INC. | 13.1M | 1.6% | 12.0K | 1,312.24 | +31.3% |
| WEC WEC ENERGY GROUP, INC. | 12.7M | 1.5% | 109.9K | 106.01 | -2.7% |
| NEE NEXTERA ENERGY INC | 12.4M | 1.5% | 133.9K | 83.65 | +9.8% |
| CMS CMS ENERGY CORP | 12.4M | 1.5% | 159.7K | 68.27 | -6.5% |
| LOW LOWES COMPANIES INC | 12.3M | 1.5% | 52.0K | 216.09 | -16.0% |
| AFL AFLAC INC | 12.1M | 1.5% | 110.6K | 116.07 | +7.6% |
| LHX L3HARRIS TECHNOLOGIES, INC. /DE/ | 12.0M | 1.4% | 34.7K | 266.73 | -3.4% |
| LIN LINDE PLC | 11.9M | 1.4% | 24.1K | 487.57 | +1.1% |
| AWK American Water Works Company, Inc. | 11.9M | 1.4% | 87.6K | 135.39 | -7.0% |
| CB Chubb Ltd | 11.8M | 1.4% | 36.1K | 340.99 | +21.9% |
| AVGO Broadcom Inc. | 11.5M | 1.4% | 37.2K | 368.45 | +26.5% |
| GD GENERAL DYNAMICS CORP | 11.3M | 1.4% | 33.0K | 384.29 | +21.0% |
| ATO ATMOS ENERGY CORP | 11.0M | 1.3% | 59.7K | 166.85 | +0.5% |
| WMT Walmart Inc. | 11.0M | 1.3% | 88.2K | 103.70 | +1.1% |
| ABT ABBOTT LABORATORIES | 10.9M | 1.3% | 105.9K | 116.64 | -11.9% |
| MSI Motorola Solutions, Inc. | 10.7M | 1.3% | 24.6K | 480.47 | +4.0% |
| UNH UNITEDHEALTH GROUP INC | 10.5M | 1.3% | 38.8K | 390.11 | +30.1% |
| CEG Constellation Energy Corp | 10.4M | 1.2% | 37.1K | 272.88 | -13.2% |
| ROP ROPER TECHNOLOGIES INC | 10.3M | 1.2% | 29.1K | 411.79 | -23.8% |
| BR BROADRIDGE FINANCIAL SOLUTIONS, INC. | 10.2M | 1.2% | 62.6K | 182.18 | -30.4% |
| FDS FACTSET RESEARCH SYSTEMS INC | 10.1M | 1.2% | 46.7K | 299.91 | -22.6% |
| ADP AUTOMATIC DATA PROCESSING INC | 10.0M | 1.2% | 49.4K | 280.81 | -9.1% |
| INTU INTUIT INC. | 10.0M | 1.2% | 23.2K | 367.00 | -47.5% |
| BLK BlackRock, Inc. | 10.0M | 1.2% | 10.4K | 1,156.55 | +2.5% |
| NJR NEW JERSEY RESOURCES CORP | 9.9M | 1.2% | 180.0K | 53.52 | +13.9% |
| PAYX PAYCHEX INC | 9.9M | 1.2% | 107.3K | 124.47 | -10.4% |
| TT Trane Technologies plc | 9.8M | 1.2% | 23.6K | 453.43 | +6.4% |
| WM WASTE MANAGEMENT INC | 9.7M | 1.2% | 42.4K | 224.06 | -2.6% |
| PLD Prologis, Inc. | 9.6M | 1.1% | 72.5K | 141.80 | +28.7% |
| ACN Accenture plc | 9.5M | 1.1% | 48.0K | 185.28 | -27.4% |
| ECL ECOLAB INC. | 9.4M | 1.1% | 35.5K | 281.63 | -1.3% |
| SHW SHERWIN WILLIAMS CO | 9.4M | 1.1% | 29.3K | 346.59 | -5.6% |
| BRO BROWN & BROWN, INC. | 9.3M | 1.1% | 142.7K | 72.92 | -24.7% |
| SPGI S&P Global Inc. | 9.3M | 1.1% | 21.8K | 431.29 | -22.6% |
| MCD MCDONALDS CORP | 9.3M | 1.1% | 29.9K | 270.95 | -13.5% |
| ITW ILLINOIS TOOL WORKS INC | 9.2M | 1.1% | 35.5K | 282.29 | +7.7% |
| ICE Intercontinental Exchange, Inc. | 9.2M | 1.1% | 58.3K | 161.25 | -11.1% |
| PEP PEPSICO INC | 9.2M | 1.1% | 59.0K | 143.48 | -4.8% |
| XYL Xylem Inc. | 9.0M | 1.1% | 75.7K | 113.42 | -20.1% |
| HD HOME DEPOT, INC. | 9.0M | 1.1% | 27.3K | 335.61 | -16.5% |
| TSCO TRACTOR SUPPLY CO /DE/ | 9.0M | 1.1% | 197.7K | 34.98 | -42.7% |
| CL COLGATE PALMOLIVE CO | 8.9M | 1.1% | 104.3K | 91.08 | +5.8% |
| LLY ELI LILLY & Co | 8.8M | 1.1% | 9.6K | 1,255.40 | +78.0% |
| SYK STRYKER CORP | 8.8M | 1.0% | 26.6K | 329.45 | -15.9% |
| CTAS CINTAS CORP | 8.7M | 1.0% | 51.7K | 203.79 | -6.0% |
A position that grew quarter on quarter may simply reflect a higher price: if the stock rose 40% and the manager did nothing, the reported value rose 40%. Reading that as accumulation is reading the price back to yourself. More on that →
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