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MCM

Mattern Capital Management Portfolio holdings

AUM $835M
1-Year Est. Return 3.68%
This Fund
S&P 500
This Quarter Est. Return
-1.89%
1 Year Est. Return
+3.68%
3 Year Est. Return
+30.74%
5 Year Est. Return
+44.06%
10 Year Est. Return
–
AUM
$835M
AUM Growth
-$12.1M
Cap. Flow
+$11.7M
Cap. Flow %
1.4%
Top 10 Hldgs %
16.96%
Holding
179
New
9
Increased
83
Reduced
55
Closed
9

Top Buys

Rank Stock Value
1
MSI icon
Motorola Solutions
MSI
+$10.6M
2
TT icon
Trane Technologies
TT
+$10M
3
WM icon
Waste Management
WM
+$8.63M
4
INTU icon
Intuit
INTU
+$5.05M
5
CEG icon
Constellation Energy
CEG
+$4.1M

Top Sells

Rank Stock Value
1
EMR icon
Emerson Electric
EMR
+$10.9M
2
TGT icon
Target
TGT
+$9.78M
3
APD icon
Air Products & Chemicals
APD
+$8.57M
4
BF.B icon
Brown-Forman Class B
BF.B
+$6.92M
5
WMT icon
Walmart Inc
WMT
+$6.75M

Sector Composition

Rank Sector Weight
1 Technology 20.1%
2 Financials 13.54%
3 Healthcare 11.58%
4 Industrials 11.48%
5 Utilities 9.67%
Name Market Value Portfolio Weight Shares or Principal Change
in Stake 		Capital Flow
VTI icon
101
Vanguard Total Stock Market ETF
VTI
$658B
$1.41M 0.17%
4,382
– –
IT icon
102
Gartner
IT
$9.39B
$1.38M 0.17%
+8,746
New +$1.61M
NVDA icon
103
NVIDIA
NVDA
$4.91T
$1.35M 0.16%
7,746
+260
+3% +$47.7K
IWF icon
104
iShares Russell 1000 Growth ETF
IWF
$123B
$1.34M 0.16%
12,552
+540
+4% +$61.3K
AON icon
105
Aon
AON
$78.4B
$1.33M 0.16%
4,116
+142
+4% +$47.2K
META icon
106
Meta Platforms (Facebook)
META
$1.64T
$1.32M 0.16%
2,311
+189
+9% +$121K
WSO icon
107
Watsco Inc
WSO
$15.3B
$1.31M 0.16%
3,614
+389
+12% +$151K
ULTA icon
108
Ulta Beauty
ULTA
$20.6B
$1.28M 0.15%
2,447
+132
+6% +$84K
DECK icon
109
Deckers Outdoor
DECK
$14.8B
$1.28M 0.15%
12,749
-4,323
-25% -$464K
RSG icon
110
Republic Services
RSG
$68.4B
$1.22M 0.15%
5,593
+822
+17% +$180K
VEA icon
111
Vanguard FTSE Developed Markets ETF
VEA
$226B
$1.21M 0.14%
18,878
– –
AXP icon
112
American Express
AXP
$242B
$1.16M 0.14%
3,822
+878
+30% +$294K
MCO icon
113
Moody's
MCO
$89.2B
$1.12M 0.13%
2,561
+820
+47% +$388K
MRSH
114
Marsh
MRSH
$87.8B
$953K 0.11%
5,492
+551
+11% +$99.1K
AVUV icon
115
Avantis US Small Cap Value ETF
AVUV
$29.4B
$903K 0.11%
8,170
+2,202
+37% +$242K
QUAL icon
116
iShares MSCI USA Quality Factor ETF
QUAL
$46.1B
$889K 0.11%
4,635
– –
TSLA icon
117
Tesla
TSLA
$1.43T
$829K 0.1%
2,229
-2,636
-54% -$1.09M
DFIV icon
118
Dimensional International Value ETF
DFIV
$20.6B
$808K 0.1%
15,309
+5,024
+49% +$266K
ORLY icon
119
O'Reilly Automotive
ORLY
$71.3B
$799K 0.1%
8,661
+1,726
+25% +$162K
CSGP icon
120
CoStar Group
CSGP
$12.2B
$797K 0.1%
19,745
+3,282
+20% +$171K
DFAT icon
121
Dimensional US Targeted Value ETF
DFAT
$14.5B
$784K 0.09%
12,546
+2,981
+31% +$189K
DLTR icon
122
Dollar Tree
DLTR
$24.2B
$750K 0.09%
6,853
-6,696
-49% -$818K
PWZ icon
123
Invesco California AMT-Free Municipal Bond ETF
PWZ
$1.16B
$740K 0.09%
30,983
-2,064
-6% -$50K
CMF icon
124
iShares California Muni Bond ETF
CMF
$4.55B
$685K 0.08%
12,053
-872
-7% -$50.3K
DG icon
125
Dollar General
DG
$27.7B
$679K 0.08%
5,716
-7,490
-57% -$1.07M
3 4
5
6 7

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DLP
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Mattern Capital Management's Q1 2026 Portfolio in Review

As of Q1 2026, Mattern Capital Management held 179 positions worth $835M, down 1.4% from $847M the previous quarter. Its ten largest holdings account for 17% of the portfolio.

Mattern Capital Management's Q1 2026 filing shows 9 new, 83 increased, 55 reduced and 9 closed positions. Its largest new stake was Motorola Solutions: 24,556 shares worth $10.7M. The largest sale was Emerson Electric, an estimated $10.9M.

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

  • Mattern Capital Management's largest Q1 2026 buy was Motorola Solutions: 24,556 shares worth $10.7M.
  • Mattern Capital Management added most to Waste Management in Q1 2026, an estimated $8.63M increase.
  • Mattern Capital Management's biggest Q1 2026 reduction was Emerson Electric, cutting an estimated $10.9M.
  • Mattern Capital Management fully exited Air Products & Chemicals in Q1 2026, selling an estimated $8.57M.
  • Mattern Capital Management's ten largest holdings make up 17% of its $835M portfolio in Q1 2026.
  • Mattern Capital Management opened 9 new positions and closed 9 in Q1 2026.
  • Mattern Capital Management's portfolio value fell 1.4% quarter-over-quarter to $835M.

Based on Mattern Capital Management's 13F filing for Q1 2026, filed 4 May 2026.