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MCM

Mattern Capital Management Portfolio holdings

AUM $857M
1-Year Est. Return 4.87%
This Fund
S&P 500
This Quarter Est. Return
+4.29%
1 Year Est. Return
+4.87%
3 Year Est. Return
+31.49%
5 Year Est. Return
+42.28%
10 Year Est. Return
–
AUM
$857M
AUM Growth
+$21.9M
Cap. Flow
+$7M
Cap. Flow %
0.82%
Top 10 Hldgs %
17.02%
Holding
173
New
3
Increased
92
Reduced
44
Closed
7

Top Buys

Rank Stock Value
1
JPM icon
JPMorgan Chase
JPM
+$8.23M
2
TSCO icon
Tractor Supply
TSCO
+$3M
3
ZTS icon
Zoetis
ZTS
+$2.8M
4
NKE icon
Nike
NKE
+$2.56M
5
BDX icon
Becton Dickinson
BDX
+$2.1M

Top Sells

Rank Stock Value
1
PSX icon
Phillips 66
PSX
+$8.9M
2
PPG icon
PPG Industries
PPG
+$7.89M
3
CBSH icon
Commerce Bancshares
CBSH
+$6.72M
4
MKC icon
McCormick & Company Non-Voting
MKC
+$6.24M
5
FRT icon
Federal Realty Investment Trust
FRT
+$4.51M

Sector Composition

Rank Sector Weight
1 Technology 21.32%
2 Financials 14.51%
3 Healthcare 12.76%
4 Industrials 12.12%
5 Utilities 8.75%
Name Market Value Portfolio Weight Shares or Principal Change
in Stake 		Capital Flow
AAPL icon
1
Apple
AAPL
$4.79T
$22.1M 2.58%
76,362
-1,238
-2% -$354K
GWW icon
2
W.W. Grainger
GWW
$61.8B
$16.1M 1.88%
11,817
-191
-2% -$235K
MSFT icon
3
Microsoft
MSFT
$3.79T
$15.3M 1.79%
41,086
-258
-0.6% -$104K
UNH icon
4
UnitedHealth
UNH
$360B
$14.6M 1.71%
35,240
-3,545
-9% -$1.31M
COST icon
5
Costco
COST
$410B
$13.4M 1.57%
14,372
-43
-0.3% -$42.8K
AVGO icon
6
Broadcom
AVGO
$1.7T
$13.3M 1.55%
35,199
-2,022
-5% -$811K
COR icon
7
Cencora
COR
$64.4B
$13.3M 1.55%
46,831
+4,836
+12% +$1.39M
AFL icon
8
Aflac
AFL
$59.3B
$12.9M 1.51%
110,309
-316
-0.3% -$36.4K
CSCO icon
9
Cisco
CSCO
$428B
$12.5M 1.45%
106,058
+5,408
+5% +$566K
LIN icon
10
Linde
LIN
$222B
$12.3M 1.44%
23,750
-329
-1% -$167K
CB icon
11
Chubb
CB
$134B
$12.3M 1.43%
35,965
-156
-0.4% -$50.9K
LLY icon
12
Eli Lilly
LLY
$1.03T
$12.2M 1.43%
10,188
+591
+6% +$604K
WEC icon
13
WEC Energy
WEC
$34.8B
$12.1M 1.42%
103,889
-6,059
-6% -$691K
LOW icon
14
Lowe's Companies
LOW
$113B
$12.1M 1.41%
54,910
+2,904
+6% +$659K
GD icon
15
General Dynamics
GD
$99B
$11.9M 1.39%
33,512
+542
+2% +$186K
TXN icon
16
Texas Instruments
TXN
$232B
$11.8M 1.38%
39,548
-876
-2% -$243K
NEE icon
17
NextEra Energy
NEE
$175B
$11.6M 1.35%
131,600
-2,338
-2% -$211K
CMS icon
18
CMS Energy
CMS
$21.5B
$11.5M 1.35%
150,896
-8,764
-5% -$657K
ADP icon
19
Automatic Data Processing
ADP
$113B
$11.2M 1.31%
50,215
+830
+2% +$177K
AWK icon
20
American Water Works
AWK
$28B
$11.2M 1.3%
84,940
-2,662
-3% -$342K
TT icon
21
Trane Technologies
TT
$98B
$11.1M 1.3%
22,695
-940
-4% -$440K
APH icon
22
Amphenol
APH
$202B
$11M 1.29%
125,172
+19,412
+18% +$1.4M
BRO icon
23
Brown & Brown
BRO
$24.3B
$10.9M 1.27%
169,855
+27,160
+19% +$1.66M
SHW icon
24
Sherwin-Williams
SHW
$80.7B
$10.8M 1.26%
31,373
+2,106
+7% +$673K
FDS icon
25
Factset
FDS
$11.1B
$10.8M 1.26%
46,828
+120
+0.3% +$27.6K
1
2 3 4 5

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AAM
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PFA
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AIMC
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SFO
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QIM
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Mattern Capital Management's Q2 2026 Portfolio in Review

As of Q2 2026, Mattern Capital Management held 173 positions worth $857M, up 2.6% from $835M the previous quarter. Its ten largest holdings account for 17% of the portfolio.

Mattern Capital Management's Q2 2026 filing shows 3 new, 92 increased, 44 reduced and 7 closed positions. Its largest new stake was Advanced Micro Devices: 491 shares worth $285K. The largest sale was Phillips 66, an estimated $8.9M.

By sector, the portfolio is most concentrated in Technology at 21% of assets, up from 20% a quarter earlier, followed by Financials and Healthcare.

  • Mattern Capital Management's largest Q2 2026 buy was Advanced Micro Devices: 491 shares worth $285K.
  • Mattern Capital Management added most to JPMorgan Chase in Q2 2026, an estimated $8.23M increase.
  • Mattern Capital Management's biggest Q2 2026 reduction was Phillips 66, cutting an estimated $8.9M.
  • Mattern Capital Management fully exited McCormick & Company Non-Voting in Q2 2026, selling an estimated $6.24M.
  • Mattern Capital Management's ten largest holdings make up 17% of its $857M portfolio in Q2 2026.
  • Mattern Capital Management opened 3 new positions and closed 7 in Q2 2026.
  • Mattern Capital Management's portfolio value rose 2.6% quarter-over-quarter to $857M.

Based on Mattern Capital Management's 13F filing for Q2 2026, filed 24 Jul 2026.