Terminal · Institutions

Every 13F-reported equity position this quarter, with its quarter-over-quarter change — each row traces back to the SEC filing.

MATTERN CAPITAL MANAGEMENT, LLC 13F Holdings -- Portfolio & Top Positions (2026-03-31)

MATTERN CAPITAL MANAGEMENT, LLC (CIK 1803227) reported $834.9M across 170 reported positions in its SEC 13F filing for 2026-03-31. Largest positions: AAPL ($19.7M, 2.36%), PSX ($16.1M, 1.93%), MSFT ($15.3M, 1.83%), COST ($14.4M, 1.72%), ABC ($13.2M, 1.58%). Source: SEC Form 13F.

RankTickerCompanyValue% PortfolioSharesAction
1AAPLAPPLE INC$19.7M2.36%77,600Added
2PSXPHILLIPS 66$16.1M1.93%88,599Trimmed
3MSFTMICROSOFT CORP$15.3M1.83%41,344Added
4COSTCOSTCO WHOLESALE CORPORATION$14.4M1.72%14,415Trimmed
5ABCCENCORA INC$13.2M1.58%41,995Trimmed
6GWWWW GRAINGER INC$13.1M1.57%12,008Trimmed
7WECWEC ENERGY GROUP INC$12.7M1.52%109,948Added
8NEENEXTERA ENERGY INC$12.4M1.49%133,938Trimmed
9CMSCMS ENERGY CORP$12.4M1.48%159,660Added
10LOWLOWES COS INC$12.3M1.47%52,006Trimmed
11AFLAFLAC INC$12.1M1.45%110,625Added
12LHXL3HARRIS TECHNOLOGIES INC$12.0M1.44%34,741Trimmed
13LINLINDE PLC$11.9M1.43%24,079Trimmed
14AWKAMERICAN WTR WKS CO INC NEW$11.9M1.43%87,602Added
15CBCHUBB LTD SWITZ$11.8M1.41%36,121Trimmed
16AVGOBROADCOM INC$11.5M1.38%37,221Trimmed
17GDGENERAL DYNAMICS CORP$11.3M1.36%32,970Trimmed
18ATOATMOS ENERGY CORP$11.0M1.32%59,706Added
19WMTWALMART INC$11.0M1.31%88,217Trimmed
20ABTABBOTT LABORATORIES$10.9M1.30%105,888Added
21MSIMOTOROLA SOLUTIONS INC$10.7M1.28%24,556New
22UNHUNITEDHEALTH GROUP INC$10.5M1.26%38,785Added
23CEGCONSTELLATION ENERGY CORP$10.4M1.24%37,107Added
24ROPROPER TECHNOLOGIES INC$10.3M1.23%29,054Added
25BRBROADRIDGE FINL SOLUTIONS IN$10.2M1.22%62,643Added

Source: SEC Form 13F filings · as of 2026-03-31