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MCM

Mattern Capital Management Portfolio holdings

AUM $835M
1-Year Est. Return 3.68%
This Fund
S&P 500
This Quarter Est. Return
-1.89%
1 Year Est. Return
+3.68%
3 Year Est. Return
+30.74%
5 Year Est. Return
+44.06%
10 Year Est. Return
–
AUM
$835M
AUM Growth
-$12.1M
Cap. Flow
+$11.7M
Cap. Flow %
1.4%
Top 10 Hldgs %
16.96%
Holding
179
New
9
Increased
83
Reduced
55
Closed
9

Top Buys

Rank Stock Value
1
MSI icon
Motorola Solutions
MSI
+$10.6M
2
TT icon
Trane Technologies
TT
+$10M
3
WM icon
Waste Management
WM
+$8.63M
4
INTU icon
Intuit
INTU
+$5.05M
5
CEG icon
Constellation Energy
CEG
+$4.1M

Top Sells

Rank Stock Value
1
EMR icon
Emerson Electric
EMR
+$10.9M
2
TGT icon
Target
TGT
+$9.78M
3
APD icon
Air Products & Chemicals
APD
+$8.57M
4
BF.B icon
Brown-Forman Class B
BF.B
+$6.92M
5
WMT icon
Walmart Inc
WMT
+$6.75M

Sector Composition

Rank Sector Weight
1 Technology 20.1%
2 Financials 13.54%
3 Healthcare 11.58%
4 Industrials 11.48%
5 Utilities 9.67%
Name Market Value Portfolio Weight Shares or Principal Change
in Stake 		Capital Flow
AAPL icon
1
Apple
AAPL
$4.9T
$19.7M 2.36%
77,600
+867
+1% +$226K
PSX icon
2
Phillips 66
PSX
$82.9B
$16.1M 1.93%
88,599
-1,850
-2% -$290K
MSFT icon
3
Microsoft
MSFT
$2.93T
$15.3M 1.83%
41,344
+5,719
+16% +$2.39M
COST icon
4
Costco
COST
$417B
$14.4M 1.72%
14,415
-171
-1% -$167K
COR icon
5
Cencora
COR
$59.9B
$13.2M 1.58%
41,995
-566
-1% -$198K
GWW icon
6
W.W. Grainger
GWW
$65.9B
$13.1M 1.57%
12,008
-226
-2% -$247K
WEC icon
7
WEC Energy
WEC
$36.9B
$12.7M 1.52%
109,948
+24,812
+29% +$2.79M
NEE icon
8
NextEra Energy
NEE
$185B
$12.4M 1.49%
133,938
-3,147
-2% -$280K
CMS icon
9
CMS Energy
CMS
$22.8B
$12.4M 1.48%
159,660
+38,952
+32% +$2.89M
LOW icon
10
Lowe's Companies
LOW
$117B
$12.3M 1.47%
52,006
-1,334
-3% -$348K
AFL icon
11
Aflac
AFL
$63.5B
$12.1M 1.45%
110,625
+1,720
+2% +$191K
LHX icon
12
L3Harris
LHX
$52.5B
$12M 1.44%
34,741
-1,880
-5% -$657K
LIN icon
13
Linde
LIN
$237B
$11.9M 1.43%
24,079
-212
-0.9% -$100K
AWK icon
14
American Water Works
AWK
$26.4B
$11.9M 1.43%
87,602
+23,538
+37% +$3.11M
CB icon
15
Chubb
CB
$137B
$11.8M 1.41%
36,121
-253
-0.7% -$81.2K
AVGO icon
16
Broadcom
AVGO
$1.76T
$11.5M 1.38%
37,221
-555
-1% -$183K
GD icon
17
General Dynamics
GD
$99.7B
$11.3M 1.36%
32,970
-303
-0.9% -$107K
ATO icon
18
Atmos Energy
ATO
$29.7B
$11M 1.32%
59,706
+1,180
+2% +$209K
WMT icon
19
Walmart Inc
WMT
$909B
$11M 1.31%
88,217
-54,972
-38% -$6.75M
ABT icon
20
Abbott
ABT
$175B
$10.9M 1.3%
105,888
+34,719
+49% +$3.92M
MSI icon
21
Motorola Solutions
MSI
$68.6B
$10.7M 1.28%
+24,556
New +$10.6M
UNH icon
22
UnitedHealth
UNH
$387B
$10.5M 1.26%
38,785
+12,654
+48% +$3.77M
CEG icon
23
Constellation Energy
CEG
$90.1B
$10.4M 1.24%
37,107
+13,476
+57% +$4.1M
ROP icon
24
Roper Technologies
ROP
$36.6B
$10.3M 1.23%
29,054
+10,538
+57% +$3.89M
BR icon
25
Broadridge
BR
$17.3B
$10.2M 1.22%
62,643
+18,333
+41% +$3.48M
1
2 3 4 5

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Mattern Capital Management's Q1 2026 Portfolio in Review

As of Q1 2026, Mattern Capital Management held 179 positions worth $835M, down 1.4% from $847M the previous quarter. Its ten largest holdings account for 17% of the portfolio.

Mattern Capital Management's Q1 2026 filing shows 9 new, 83 increased, 55 reduced and 9 closed positions. Its largest new stake was Motorola Solutions: 24,556 shares worth $10.7M. The largest sale was Emerson Electric, an estimated $10.9M.

By sector, the portfolio is most concentrated in Technology at 20% of assets, up from 20% a quarter earlier, followed by Financials and Healthcare.

  • Mattern Capital Management's largest Q1 2026 buy was Motorola Solutions: 24,556 shares worth $10.7M.
  • Mattern Capital Management added most to Waste Management in Q1 2026, an estimated $8.63M increase.
  • Mattern Capital Management's biggest Q1 2026 reduction was Emerson Electric, cutting an estimated $10.9M.
  • Mattern Capital Management fully exited Air Products & Chemicals in Q1 2026, selling an estimated $8.57M.
  • Mattern Capital Management's ten largest holdings make up 17% of its $835M portfolio in Q1 2026.
  • Mattern Capital Management opened 9 new positions and closed 9 in Q1 2026.
  • Mattern Capital Management's portfolio value fell 1.4% quarter-over-quarter to $835M.

Based on Mattern Capital Management's 13F filing for Q1 2026, filed 4 May 2026.