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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
AMZN icon
76
Amazon
AMZN
$2.79T
$3.59M 0.42%
15,081
+246
+2% +$61.7K
DIA icon
77
State Street SPDR Dow Jones Industrial Average ETF Trust
DIA
$46.1B
$3.29M 0.38%
6,297
– –
DUHP icon
78
Dimensional US High Profitability ETF
DUHP
$12.8B
$3.18M 0.37%
76,310
+26,724
+54% +$1.07M
VTEB icon
79
Vanguard Tax-Exempt Bond Index Fund
VTEB
$45.1B
$3.01M 0.35%
59,478
+13,758
+30% +$691K
TFLO icon
80
iShares Treasury Floating Rate Bond ETF
TFLO
$6.66B
$2.81M 0.33%
55,463
+3,051
+6% +$154K
VNLA icon
81
Janus Henderson Short Duration Income ETF
VNLA
$3.43B
$2.73M 0.32%
55,881
-1,880
-3% -$92.1K
GOOG icon
82
Alphabet (Google) Class C
GOOG
$4.15T
$2.66M 0.31%
7,524
+295
+4% +$105K
IWD icon
83
iShares Russell 1000 Value ETF
IWD
$84.7B
$2.48M 0.29%
10,246
– –
TSM icon
84
TSMC
TSM
$2.16T
$2.42M 0.28%
5,057
-510
-9% -$207K
ASML icon
85
ASML
ASML
$632B
$2.38M 0.28%
1,194
+26
+2% +$41.4K
NFLX icon
86
Netflix
NFLX
$344B
$2.14M 0.25%
29,936
+2,153
+8% +$190K
VRTX icon
87
Vertex Pharmaceuticals
VRTX
$141B
$2.1M 0.25%
4,232
+355
+9% +$157K
NVO
88
Novo Nordisk
NVO
$210B
$2.01M 0.23%
41,849
-4,475
-10% -$192K
CBSH icon
89
Commerce Bancshares
CBSH
$8.37B
$1.97M 0.23%
34,107
-128,134
-79% -$6.72M
FRT icon
90
Federal Realty Investment Trust
FRT
$10.2B
$1.93M 0.23%
15,624
-38,737
-71% -$4.51M
CRM icon
91
Salesforce
CRM
$218B
$1.82M 0.21%
11,649
+722
+7% +$127K
SPY icon
92
State Street SPDR S&P 500 ETF Trust
SPY
$818B
$1.71M 0.2%
2,285
+54
+2% +$39.1K
BRK.B icon
93
Berkshire Hathaway Class B
BRK.B
$1.09T
$1.66M 0.19%
3,325
+333
+11% +$160K
NVDA icon
94
NVIDIA
NVDA
$5.52T
$1.66M 0.19%
8,306
+560
+7% +$115K
TYL icon
95
Tyler Technologies
TYL
$15.5B
$1.62M 0.19%
5,547
+587
+12% +$186K
RSG icon
96
Republic Services
RSG
$68.9B
$1.6M 0.19%
7,530
+1,937
+35% +$405K
AON icon
97
Aon
AON
$69.4B
$1.59M 0.19%
4,798
+682
+17% +$220K
COP icon
98
ConocoPhillips
COP
$163B
$1.58M 0.18%
15,217
-1,976
-11% -$234K
MSCI icon
99
MSCI
MSCI
$41.8B
$1.58M 0.18%
2,819
+55
+2% +$32.1K
IWF icon
100
iShares Russell 1000 Growth ETF
IWF
$126B
$1.55M 0.18%
12,501
-51
-0.4% -$6.15K
2 3
4
5 6

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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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UW
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PWG
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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.