MATTERN CAPITAL MANAGEMENT, LLC — 13F Holdings & Portfolio
CIK 1803227 · latest 13F-HR filed 2026-05-04
MATTERN CAPITAL MANAGEMENT, LLC manages $834.9M in 13F-reported U.S. long-equity assets across 170 reported positions as of its 2026-03-31 13F-HR filing. Its largest disclosed positions are AAPL (2.36%), PSX (1.93%), MSFT (1.83%). Quarter over quarter (versus its 2025-12-31 filing) the fund opened 9 new positions, exited 9, added to 58, and trimmed 60.
AUM is the long-equity portion reported on Form 13F-HR. Excludes short positions, cash, foreign holdings, and non-13F assets. For informational purposes only — not investment advice.
$834.9M
Long-equity book
170
Distinct positions
2026-03-31
Filed 2026-05-04
+9 / −9 / ↑58 / ↓60
vs 2025-12-31
| Name | Title / Status | Ownership | Type |
|---|
Top Adds (vs prior quarter)
- WASTE MGMT INC DEL$8.7M +820.3%
- PHILLIPS 66$4.5M +38.3%
- CMS ENERGY CORP$3.9M +46.7%
- WEC ENERGY GROUP INC$3.8M +41.8%
- AMERICAN WTR WKS CO INC NEW$3.6M +42.6%
Top Trims
- EMERSON ELEC CO-$10.1M -98.0%
- TARGET CORP-$8.4M -97.6%
- WALMART INC-$5.0M -31.3%
- ANALOG DEVICES INC-$4.4M -34.4%
- CISCO SYS INC-$3.8M -32.9%
New Positions
- MOTOROLA SOLUTIONS INC$10.7M
- TRANE TECHNOLOGIES PLC$9.8M
- WISDOMTREE TR$3.5M
- ISHARES TR$2.7M
- MSCI INC$1.5M
Exited Positions
- AIR PRODS & CHEMS INC$8.6M
- BROWN FORMAN CORP$6.9M
- ADOBE INC$1.7M
- ISHARES TR$1.5M
- BAXTER INTL INC$1.3M
Rows tagged Call or Put are options positions, not stock. Per SEC Form 13F-HR, Value shows the notional value of the underlying (shares covered × underlying price), not the option premium. Shares is the number of underlying shares covered (divide by 100 for contract count).
| # | Issuer | Symbol | CUSIP | Value | Weight | Shares | Type |
|---|---|---|---|---|---|---|---|
| 1 | APPLE INC | AAPL | 037833100 | $19.7M | 2.36% | 77,600 | SH |
| 2 | PHILLIPS 66 | PSX | 718546104 | $16.1M | 1.93% | 88,599 | SH |
| 3 | MICROSOFT CORP | MSFT | 594918104 | $15.3M | 1.83% | 41,344 | SH |
| 4 | COSTCO WHOLESALE CORPORATION | COST | 22160K105 | $14.4M | 1.72% | 14,415 | SH |
| 5 | CENCORA INC | COR | 03073E105 | $13.2M | 1.58% | 41,995 | SH |
| 6 | WW GRAINGER INC | GWW | 384802104 | $13.1M | 1.57% | 12,008 | SH |
| 7 | WEC ENERGY GROUP INC | WEC | 92939U106 | $12.7M | 1.52% | 109,948 | SH |
| 8 | NEXTERA ENERGY INC | NEE | 65339F101 | $12.4M | 1.49% | 133,938 | SH |
| 9 | CMS ENERGY CORP | CMS | 125896100 | $12.4M | 1.48% | 159,660 | SH |
| 10 | LOWES COS INC | LOW | 548661107 | $12.3M | 1.47% | 52,006 | SH |
| 11 | AFLAC INC | AFL | 001055102 | $12.1M | 1.45% | 110,625 | SH |
| 12 | L3HARRIS TECHNOLOGIES INC | LHX | 502431109 | $12.0M | 1.44% | 34,741 | SH |
| 13 | LINDE PLC | LIN | G54950103 | $11.9M | 1.43% | 24,079 | SH |
| 14 | AMERICAN WTR WKS CO INC NEW | AWK | 030420103 | $11.9M | 1.43% | 87,602 | SH |
| 15 | CHUBB LTD SWITZ | CB | H1467J104 | $11.8M | 1.41% | 36,121 | SH |
| 16 | BROADCOM INC | AVGO | 11135F101 | $11.5M | 1.38% | 37,221 | SH |
| 17 | GENERAL DYNAMICS CORP | GD | 369550108 | $11.3M | 1.36% | 32,970 | SH |
| 18 | ATMOS ENERGY CORP | ATO | 049560105 | $11.0M | 1.32% | 59,706 | SH |
| 19 | WALMART INC | WMT | 931142103 | $11.0M | 1.31% | 88,217 | SH |
| 20 | ABBOTT LABORATORIES | ABT | 002824100 | $10.9M | 1.30% | 105,888 | SH |
| 21 | MOTOROLA SOLUTIONS INC | MSI | 620076307 | $10.7M | 1.28% | 24,556 | SH |
| 22 | UNITEDHEALTH GROUP INC | UNH | 91324P102 | $10.5M | 1.26% | 38,785 | SH |
| 23 | CONSTELLATION ENERGY CORP | CEG | 21037T109 | $10.4M | 1.24% | 37,107 | SH |
| 24 | ROPER TECHNOLOGIES INC | ROP | 776696106 | $10.3M | 1.23% | 29,054 | SH |
| 25 | BROADRIDGE FINL SOLUTIONS IN | BR | 11133T103 | $10.2M | 1.22% | 62,643 | SH |
| 26 | FACTSET RESH SYS INC | FDS | 303075105 | $10.1M | 1.21% | 46,708 | SH |
| 27 | AUTOMATIC DATA PROCESSING IN | ADP | 053015103 | $10.0M | 1.20% | 49,385 | SH |
| 28 | INTUIT | INTU | 461202103 | $10.0M | 1.20% | 23,151 | SH |
| 29 | BLACKROCK INC | BLK | 09290D101 | $10.0M | 1.20% | 10,387 | SH |
| 30 | NEW JERSEY RES CORP | NJR | 646025106 | $9.9M | 1.18% | 180,016 | SH |
| 31 | PAYCHEX INC | PAYX | 704326107 | $9.9M | 1.18% | 107,298 | SH |
| 32 | TRANE TECHNOLOGIES PLC | TT | G8994E103 | $9.8M | 1.18% | 23,635 | SH |
| 33 | WASTE MGMT INC DEL | WM | 94106L109 | $9.7M | 1.17% | 42,361 | SH |
| 34 | PROLOGIS INC. | PLD | 74340W103 | $9.6M | 1.15% | 72,475 | SH |
| 35 | ACCENTURE PLC IRELAND | ACN | G1151C101 | $9.5M | 1.14% | 48,042 | SH |
| 36 | ECOLAB INC | ECL | 278865100 | $9.4M | 1.13% | 35,517 | SH |
| 37 | SHERWIN WILLIAMS CO | SHW | 824348106 | $9.4M | 1.12% | 29,267 | SH |
| 38 | BROWN & BROWN INC | BRO | 115236101 | $9.3M | 1.11% | 142,695 | SH |
| 39 | S&P GLOBAL INC | SPGI | 78409V104 | $9.3M | 1.11% | 21,839 | SH |
| 40 | MCDONALDS CORP | MCD | 580135101 | $9.3M | 1.11% | 29,854 | SH |
| 41 | ILLINOIS TOOL WKS INC | ITW | 452308109 | $9.2M | 1.11% | 35,455 | SH |
| 42 | INTERCONTINENTAL EXCHANGE IN | ICE | 45866F104 | $9.2M | 1.10% | 58,322 | SH |
| 43 | PEPSICO INC | PEP | 713448108 | $9.2M | 1.10% | 58,984 | SH |
| 44 | XYLEM INC | XYL | 98419M100 | $9.0M | 1.08% | 75,709 | SH |
| 45 | HOME DEPOT INC | HD | 437076102 | $9.0M | 1.07% | 27,262 | SH |
| 46 | TRACTOR SUPPLY CO | TSCO | 892356106 | $9.0M | 1.07% | 197,679 | SH |
| 47 | COLGATE PALMOLIVE CO | CL | 194162103 | $8.9M | 1.06% | 104,252 | SH |
| 48 | ELI LILLY & CO | LLY | 532457108 | $8.8M | 1.06% | 9,597 | SH |
| 49 | STRYKER CORPORATION | SYK | 863667101 | $8.8M | 1.05% | 26,650 | SH |
| 50 | CINTAS CORP | CTAS | 172908105 | $8.7M | 1.05% | 51,728 | SH |
| Period | Filed | AUM | Holdings | Accession |
|---|---|---|---|---|
| 2026-03-31 | 2026-05-04 | $834.9M | 170 | 0001725547-26-000166 |
| 2025-12-31 | 2026-01-29 | $846.9M | 170 | 0001725547-26-000059 |