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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
+2.4%
1 Year Est. Return
+4.87%
3 Year Est. Return
+31.49%
5 Year Est. Return
+42.28%
10 Year Est. Return
–
AUM
$851M
AUM Growth
+$18.2M
Cap. Flow
+$5.92M
Cap. Flow %
0.7%
Top 10 Hldgs %
16.99%
Holding
174
New
4
Increased
88
Reduced
57
Closed
2

Top Buys

Rank Stock Value
1
CEG icon
Constellation Energy
CEG
+$7.36M
2
INTU icon
Intuit
INTU
+$6.46M
3
LLY icon
Eli Lilly
LLY
+$2.73M
4
ROP icon
Roper Technologies
ROP
+$2M
5
MA icon
Mastercard
MA
+$1.86M

Top Sells

Rank Stock Value
1
UNP icon
Union Pacific
UNP
+$9.1M
2
LMT icon
Lockheed Martin
LMT
+$8.82M
3
TROW icon
T. Rowe Price
TROW
+$8.52M
4
AVGO icon
Broadcom
AVGO
+$1.47M
5
COR icon
Cencora
COR
+$862K

Sector Composition

Rank Sector Weight
1 Technology 18.91%
2 Financials 12.93%
3 Healthcare 11.4%
4 Industrials 11.34%
5 Consumer Staples 10.38%
Name Market Value Portfolio Weight Shares or Principal Change
in Stake 		Capital Flow
DLTR icon
101
Dollar Tree
DLTR
$24.4B
$1.42M 0.17%
15,030
+1,898
+14% +$203K
IGSB icon
102
iShares 1-5 Year Investment Grade Corporate Bond ETF
IGSB
$23B
$1.41M 0.17%
26,531
+10,490
+65% +$554K
AON icon
103
Aon
AON
$76.5B
$1.41M 0.17%
3,941
+704
+22% +$255K
META icon
104
Meta Platforms (Facebook)
META
$1.42T
$1.37M 0.16%
1,867
+116
+7% +$86.3K
BRK.B icon
105
Berkshire Hathaway Class B
BRK.B
$1.1T
$1.35M 0.16%
2,691
+182
+7% +$88.2K
ULTA icon
106
Ulta Beauty
ULTA
$22B
$1.34M 0.16%
2,453
+254
+12% +$130K
DG icon
107
Dollar General
DG
$28B
$1.3M 0.15%
12,559
+1,688
+16% +$185K
VRTX icon
108
Vertex Pharmaceuticals
VRTX
$121B
$1.3M 0.15%
3,312
+980
+42% +$410K
ADBE icon
109
Adobe
ADBE
$99.5B
$1.3M 0.15%
3,672
+1,034
+39% +$371K
ASML icon
110
ASML
ASML
$626B
$1.2M 0.14%
1,241
+327
+36% +$257K
DUHP icon
111
Dimensional US High Profitability ETF
DUHP
$12.2B
$1.18M 0.14%
31,289
+1,215
+4% +$44.5K
VEA icon
112
Vanguard FTSE Developed Markets ETF
VEA
$229B
$1.13M 0.13%
18,878
– –
CSGP icon
113
CoStar Group
CSGP
$11.7B
$1.11M 0.13%
13,197
+2,134
+19% +$189K
NVO
114
Novo Nordisk
NVO
$208B
$1.1M 0.13%
19,781
+6,654
+51% +$389K
BAX icon
115
Baxter International
BAX
$13.5B
$1.09M 0.13%
48,027
+17,109
+55% +$434K
AZO icon
116
AutoZone
AZO
$49.2B
$995K 0.12%
232
+29
+14% +$116K
AAP icon
117
Advance Auto Parts
AAP
$3.35B
$986K 0.12%
16,059
+1,129
+8% +$66.7K
RSG icon
118
Republic Services
RSG
$64.8B
$986K 0.12%
4,296
+815
+23% +$191K
AXP icon
119
American Express
AXP
$227B
$977K 0.11%
2,940
+418
+17% +$133K
SHV icon
120
iShares 0-1 Year Treasury Bond ETF
SHV
$20.8B
$967K 0.11%
8,752
+3,719
+74% +$410K
WM icon
121
Waste Management
WM
$90.6B
$963K 0.11%
4,362
+820
+23% +$185K
QUAL icon
122
iShares MSCI USA Quality Factor ETF
QUAL
$46.4B
$926K 0.11%
4,763
-11
-0.2% -$2.06K
CRM icon
123
Salesforce
CRM
$151B
$885K 0.1%
+3,734
New +$942K
PLTR icon
124
Palantir
PLTR
$295B
$877K 0.1%
4,810
– –
WSO icon
125
Watsco Inc
WSO
$12.7B
$870K 0.1%
2,152
+626
+41% +$268K
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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USAA
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Mattern Capital Management's Q3 2025 Portfolio in Review

As of Q3 2025, Mattern Capital Management held 174 positions worth $851M, up 2.2% from $832M the previous quarter. Its ten largest holdings account for 17% of the portfolio.

Trading was light in Q3 2025: portfolio turnover was 3.4%. Mattern Capital Management opened 4 new positions and exited 2, leaving the 174-position portfolio largely intact.

By sector, the portfolio is most concentrated in Technology at 19% of assets, up from 18% a quarter earlier, followed by Financials and Healthcare.

  • Mattern Capital Management's largest Q3 2025 buy was Constellation Energy: 22,802 shares worth $7.5M.
  • Mattern Capital Management added most to Intuit in Q3 2025, an estimated $6.46M increase.
  • Mattern Capital Management's biggest Q3 2025 reduction was Lockheed Martin, cutting an estimated $8.82M.
  • Mattern Capital Management fully exited Union Pacific in Q3 2025, selling an estimated $9.1M.
  • Mattern Capital Management's ten largest holdings make up 17% of its $851M portfolio in Q3 2025.
  • Mattern Capital Management opened 4 new positions and closed 2 in Q3 2025.
  • Mattern Capital Management's portfolio value rose 2.2% quarter-over-quarter to $851M.

Based on Mattern Capital Management's 13F filing for Q3 2025, filed 21 Oct 2025.