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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
+2.34%
1 Year Est. Return
+4.87%
3 Year Est. Return
+31.49%
5 Year Est. Return
+42.28%
10 Year Est. Return
–
AUM
$785M
AUM Growth
+$18M
Cap. Flow
+$9.01M
Cap. Flow %
1.15%
Top 10 Hldgs %
16.78%
Holding
167
New
7
Increased
74
Reduced
64
Closed
4

Top Buys

Rank Stock Value
1
LLY icon
Eli Lilly
LLY
+$4.75M
2
WRB icon
W.R. Berkley
WRB
+$4.51M
3
ROP icon
Roper Technologies
ROP
+$4.12M
4
APH icon
Amphenol
APH
+$3.84M
5
MA icon
Mastercard
MA
+$3.41M

Top Sells

Rank Stock Value
1
UPS icon
United Parcel Service
UPS
+$1.71M
2
AAPL icon
Apple
AAPL
+$1.1M
3
WMT icon
Walmart Inc
WMT
+$1.05M
4
COST icon
Costco
COST
+$1.04M
5
AFL icon
Aflac
AFL
+$972K

Sector Composition

Rank Sector Weight
1 Technology 16.19%
2 Financials 14.65%
3 Industrials 13.03%
4 Healthcare 12.02%
5 Consumer Staples 11.78%
Name Market Value Portfolio Weight Shares or Principal Change
in Stake 		Capital Flow
WRB icon
76
W.R. Berkley
WRB
$26.9B
$5.24M 0.67%
+73,590
New +$4.51M
AVIG icon
77
Avantis Core Fixed Income ETF
AVIG
$1.95B
$4.98M 0.63%
120,240
+11,238
+10% +$460K
ROP icon
78
Roper Technologies
ROP
$38.8B
$4.33M 0.55%
+7,348
New +$4.12M
MA icon
79
Mastercard
MA
$502B
$4.13M 0.53%
7,543
+6,272
+493% +$3.41M
APH icon
80
Amphenol
APH
$198B
$3.69M 0.47%
+56,267
New +$3.84M
QQQ icon
81
Invesco QQQ Trust
QQQ
$453B
$2.39M 0.3%
5,107
– –
AMZN icon
82
Amazon
AMZN
$2.92T
$2.16M 0.27%
11,347
+453
+4% +$98.3K
VTEB icon
83
Vanguard Tax-Exempt Bond Index Fund
VTEB
$45.1B
$1.83M 0.23%
36,881
-1,197
-3% -$59.9K
DECK icon
84
Deckers Outdoor
DECK
$13.2B
$1.77M 0.23%
15,803
+294
+2% +$47.5K
IWD icon
85
iShares Russell 1000 Value ETF
IWD
$82.2B
$1.67M 0.21%
8,871
– –
AVLV icon
86
Avantis US Large Cap Value ETF
AVLV
$18B
$1.28M 0.16%
19,601
+1,672
+9% +$113K
VTI icon
87
Vanguard Morningstar Total Stock Market ETF
VTI
$660B
$1.2M 0.15%
4,382
+203
+5% +$59K
BRK.B icon
88
Berkshire Hathaway Class B
BRK.B
$1.1T
$1.16M 0.15%
2,172
-44
-2% -$21.4K
AON icon
89
Aon
AON
$76.5B
$1.15M 0.15%
2,879
+155
+6% +$59.4K
TSLA icon
90
Tesla
TSLA
$1.23T
$1.12M 0.14%
4,314
+33
+0.8% +$11K
CVX icon
91
Chevron
CVX
$392B
$1.11M 0.14%
6,660
+567
+9% +$88.8K
NFLX icon
92
Netflix
NFLX
$299B
$1.06M 0.13%
11,360
-340
-3% -$32.3K
COP icon
93
ConocoPhillips
COP
$147B
$1.03M 0.13%
9,833
+1,714
+21% +$171K
ADBE icon
94
Adobe
ADBE
$99.5B
$1.01M 0.13%
2,623
+554
+27% +$238K
VNLA icon
95
Janus Henderson Short Duration Income ETF
VNLA
$3.32B
$989K 0.13%
20,114
+2,342
+13% +$115K
QUAL icon
96
iShares MSCI USA Quality Factor ETF
QUAL
$46.4B
$954K 0.12%
5,583
-45
-0.8% -$8.06K
VRTX icon
97
Vertex Pharmaceuticals
VRTX
$121B
$939K 0.12%
1,936
+63
+3% +$29.4K
GOOG icon
98
Alphabet (Google) Class C
GOOG
$4.36T
$930K 0.12%
5,950
+392
+7% +$71.8K
SHY icon
99
iShares 1-3 Year Treasury Bond ETF
SHY
$25.5B
$921K 0.12%
11,136
+3,482
+45% +$286K
DUHP icon
100
Dimensional US High Profitability ETF
DUHP
$12.2B
$920K 0.12%
27,751
+3,060
+12% +$105K
2 3
4
5 6

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NOCM
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OAM
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BCM
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AWM
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TSS
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Mattern Capital Management's Q1 2025 Portfolio in Review

As of Q1 2025, Mattern Capital Management held 167 positions worth $785M, up 2.3% from $767M the previous quarter. Its ten largest holdings account for 17% of the portfolio.

Mattern Capital Management's Q1 2025 filing shows 7 new, 74 increased, 64 reduced and 4 closed positions. Its largest new stake was W.R. Berkley: 73,590 shares worth $5.24M. The largest sale was United Parcel Service, an estimated $1.71M.

By sector, the portfolio is most concentrated in Technology at 16% of assets, down from 17% a quarter earlier, followed by Financials and Industrials.

  • Mattern Capital Management's largest Q1 2025 buy was W.R. Berkley: 73,590 shares worth $5.24M.
  • Mattern Capital Management added most to Eli Lilly in Q1 2025, an estimated $4.75M increase.
  • Mattern Capital Management's biggest Q1 2025 reduction was United Parcel Service, cutting an estimated $1.71M.
  • Mattern Capital Management fully exited Vanguard Morningstar Small-Cap Value ETF in Q1 2025, selling an estimated $325K.
  • Mattern Capital Management's ten largest holdings make up 17% of its $785M portfolio in Q1 2025.
  • Mattern Capital Management opened 7 new positions and closed 4 in Q1 2025.
  • Mattern Capital Management's portfolio value rose 2.3% quarter-over-quarter to $785M.

Based on Mattern Capital Management's 13F filing for Q1 2025, filed 23 Apr 2025.