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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
VZ icon
151
Verizon
VZ
$210B
$302K 0.04%
7,142
– –
EPD icon
152
Enterprise Products Partners
EPD
$84.6B
$298K 0.03%
8,102
+100
+1% +$3.77K
AMD icon
153
Advanced Micro Devices
AMD
$745B
$285K 0.03%
+491
New +$201K
TD icon
154
Toronto Dominion Bank
TD
$202B
$280K 0.03%
2,308
– –
SUB icon
155
iShares Short-Term National Muni Bond ETF
SUB
$11.6B
$273K 0.03%
2,567
-1
-0% -$106
KMI icon
156
Kinder Morgan
KMI
$70.4B
$262K 0.03%
8,180
+1,000
+14% +$32.2K
IBDR icon
157
iShares iBonds Dec 2026 Term Corporate ETF
IBDR
$3.29B
$254K 0.03%
10,495
– –
VO icon
158
Vanguard Morningstar Mid-Cap ETF
VO
$109B
$248K 0.03%
3,080
– –
MPLX icon
159
MPLX
MPLX
$60.2B
$242K 0.03%
4,300
– –
WES icon
160
Western Midstream Partners
WES
$20.3B
$240K 0.03%
5,475
– –
IBTG icon
161
iShares iBonds Dec 2026 Term Treasury ETF
IBTG
$2.02B
$239K 0.03%
10,420
– –
CAT icon
162
Caterpillar
CAT
$368B
$231K 0.03%
+217
New +$191K
IVW icon
163
iShares S&P 500 Growth ETF
IVW
$77.2B
$230K 0.03%
1,673
-132
-7% -$17.4K
EZU icon
164
iShare MSCI Eurozone ETF
EZU
$9.88B
$228K 0.03%
3,280
– –
IBTH icon
165
iShares iBonds Dec 2027 Term Treasury ETF
IBTH
$2.36B
$226K 0.03%
10,100
– –
DE icon
166
Deere & Co
DE
$187B
$211K 0.02%
+332
New +$192K
DGRO icon
167
iShares Core Dividend Growth ETF
DGRO
$43.8B
– –
-3,320
Closed -$233K
EMR icon
168
Emerson Electric
EMR
$83.8B
– –
-1,555
Closed -$204K
HON icon
169
Honeywell
HON
$65.8B
– –
-2,004
Closed -$453K
MKC icon
170
McCormick & Company Non-Voting
MKC
$14.1B
– –
-123,731
Closed -$6.24M
SHY icon
171
iShares 1-3 Year Treasury Bond ETF
SHY
$25.7B
– –
-2,960
Closed -$244K
TGT icon
172
Target
TGT
$74.5B
– –
-1,681
Closed -$204K
VB icon
173
Vanguard Morningstar Small-Cap ETF
VB
$81B
– –
-926
Closed -$243K
3 4 5 6
7

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SC
Slow Capital Greenbrae, California $857M AUM 38.3% 1-Year Est. Return
AAM
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PFA
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AIMC
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SFO
Stokes Family Office New Orleans, Louisiana $858M AUM 26.13% 1-Year Est. Return
QIM
Quest Investment Management Lake Oswego, Oregon $856M AUM 29.41% 1-Year Est. Return
UW
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PWG
Portside Wealth Group Provo, Utah $858M AUM 26.82% 1-Year Est. Return

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.