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Mattern Capital Management, Llc

Portfolio Manager
Mattern Capital Management, Llc
Performance
+1.48% (2026 Q1)
AUM (13F)
$834.89M
# of Holdings
170
Performance Rank
Allocation (Top 20)
30.78%

Mattern Capital Management, Llc Holdings Map

Top 50 Mattern Capital Management, Llc Holdings

Top 10 holdings

StockCompany% Port.SharesValueActivityOwnershipAvg. CostDate
AAPL
APPLE INC
2.36%77.6K$19.7M
+1.13%(+867)
2025-Q1: 77.7K shares2025-Q2: 80.8K shares2025-Q3: 79.0K shares2025-Q4: 76.7K shares2026-Q1: 77.6K shares
$87.34(+242.18%)
2026-03-31
PSX
PHILLIPS 66
1.93%88.6K$16.1M
-2.05%(-1.85K)
2025-Q1: 92.2K shares2025-Q2: 94.2K shares2025-Q3: 93.1K shares2025-Q4: 90.4K shares2026-Q1: 88.6K shares
$90.81(+89.21%)
2026-03-31
MSFT
MICROSOFT CORP
1.83%41.3K$15.3M
+16.05%(+5.72K)
2025-Q1: 37.4K shares2025-Q2: 38.1K shares2025-Q3: 37.2K shares2025-Q4: 35.6K shares2026-Q1: 41.3K shares
$217.46(+86.34%)
2026-03-31
COST
COSTCO WHOLESALE CORPORATION
1.72%14.4K$14.4M
-1.17%(-171)
2025-Q1: 14.1K shares2025-Q2: 14.1K shares2025-Q3: 13.9K shares2025-Q4: 14.6K shares2026-Q1: 14.4K shares
$358.52(+188.15%)
2026-03-31
COR
CENCORA INC
1.58%42.0K$13.2M
-1.33%(-566)
2025-Q1: 47.6K shares2025-Q2: 47.0K shares2025-Q3: 44.0K shares2025-Q4: 42.6K shares2026-Q1: 42.0K shares
$96.50(+164.95%)
2026-03-31
GWW
WW GRAINGER INC
1.57%12.0K$13.1M
-1.85%(-226)
2025-Q1: 11.7K shares2025-Q2: 11.8K shares2025-Q3: 11.7K shares2025-Q4: 12.2K shares2026-Q1: 12.0K shares
$383.20(+226.94%)
2026-03-31
WEC
WEC ENERGY GROUP INC
1.52%109.9K$12.7M
+29.14%(+24.81K)
2025-Q1: 84.0K shares2025-Q2: 84.8K shares2025-Q3: 84.0K shares2025-Q4: 85.1K shares2026-Q1: 109.9K shares
$95.18(+17.88%)
2026-03-31
NEE
NEXTERA ENERGY INC
1.49%133.9K$12.4M
-2.30%(-3.15K)
2025-Q1: 140.1K shares2025-Q2: 142.5K shares2025-Q3: 160.0K shares2025-Q4: 137.1K shares2026-Q1: 133.9K shares
$64.12(+47.93%)
2026-03-31
CMS
CMS ENERGY CORP
1.48%159.7K$12.4M
+32.27%(+38.95K)
2025-Q1: 117.0K shares2025-Q2: 118.4K shares2025-Q3: 118.6K shares2025-Q4: 120.7K shares2026-Q1: 159.7K shares
$64.68(+12.57%)
2026-03-31
LOW
LOWES COS INC
1.47%52.0K$12.3M
-2.50%(-1.33K)
2025-Q1: 52.8K shares2025-Q2: 53.4K shares2025-Q3: 52.7K shares2025-Q4: 53.3K shares2026-Q1: 52.0K shares
$134.71(+63.65%)
2026-03-31

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