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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
DGRO icon
151
iShares Core Dividend Growth ETF
DGRO
$42.7B
$283K 0.04%
4,582
-71
-2% -$4.45K
SUB icon
152
iShares Short-Term National Muni Bond ETF
SUB
$11.4B
$282K 0.04%
2,673
– –
EPD icon
153
Enterprise Products Partners
EPD
$82.3B
$273K 0.03%
8,002
-1,798
-18% -$59.9K
PAA icon
154
Plains All American Pipeline
PAA
$17.3B
$272K 0.03%
13,602
– –
IBTH icon
155
iShares iBonds Dec 2027 Term Treasury ETF
IBTH
$2.25B
$270K 0.03%
12,030
+79
+0.7% +$1.76K
IBTF
156
DELISTED
iShares iBonds Dec 2025 Term Treasury ETF
IBTF
$267K 0.03%
11,444
+59
+0.5% +$1.38K
ITOT icon
157
iShares Core S&P Total US Stock Market ETF
ITOT
$94.3B
$265K 0.03%
2,168
– –
NVS icon
158
Novartis
NVS
$297B
$246K 0.03%
2,211
– –
MRK icon
159
Merck
MRK
$322B
$238K 0.03%
2,648
-255
-9% -$23.8K
IVW icon
160
iShares S&P 500 Growth ETF
IVW
$73.8B
$234K 0.03%
2,520
-264
-9% -$26.6K
MPLX icon
161
MPLX
MPLX
$59.3B
$230K 0.03%
4,300
– –
WES icon
162
Western Midstream Partners
WES
$19.2B
$224K 0.03%
5,475
– –
KMI icon
163
Kinder Morgan
KMI
$71.7B
$205K 0.03%
+7,180
New +$199K
IWO icon
164
iShares Russell 2000 Growth ETF
IWO
$14.3B
– –
-858
Closed -$247K
VBR icon
165
Vanguard Morningstar Small-Cap Value ETF
VBR
$37.1B
– –
-1,638
Closed -$325K
VMC icon
166
Vulcan Materials
VMC
$34.8B
– –
-1,138
Closed -$293K
VO icon
167
Vanguard Morningstar Mid-Cap ETF
VO
$106B
– –
-3,080
Closed -$203K
3 4 5 6
7

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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.