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MSR

Main Street Research Portfolio holdings

AUM $2.12B
1-Year Est. Return 67.44%
This Fund
S&P 500
This Quarter Est. Return
+21.77%
1 Year Est. Return
+67.44%
3 Year Est. Return
+232.37%
5 Year Est. Return
+381.46%
10 Year Est. Return
+1,630.85%
AUM
$1.61B
AUM Growth
+$76.1M
Cap. Flow
-$156M
Cap. Flow %
-9.71%
Top 10 Hldgs %
39.62%
Holding
128
New
27
Increased
27
Reduced
51
Closed
13

Top Buys

Rank Stock Value
1
UBER icon
Uber
UBER
+$37M
2
SPOT icon
Spotify
SPOT
+$32M
3
HOOD icon
Robinhood
HOOD
+$31.8M
4
WMT icon
Walmart Inc
WMT
+$30.8M
5
TT icon
Trane Technologies
TT
+$30.1M

Top Sells

Rank Stock Value
1
PLTR icon
Palantir
PLTR
+$52.1M
2
ORCL icon
Oracle
ORCL
+$34.9M
3
PH icon
Parker-Hannifin
PH
+$33.4M
4
CAT icon
Caterpillar
CAT
+$32.2M
5
CSCO icon
Cisco
CSCO
+$31.9M

Sector Composition

Rank Sector Weight
1 Technology 31.33%
2 Financials 17.36%
3 Communication Services 15.08%
4 Consumer Staples 10.12%
5 Consumer Discretionary 9.54%
Name Market Value Portfolio Weight Shares or Principal Change
in Stake 		Capital Flow
CVX icon
51
Chevron
CVX
$427B
$1.37M 0.09%
9,534
-2,084
-18% -$294K
MMM icon
52
3M
MMM
$84.9B
$1.23M 0.08%
8,056
-90
-1% -$12.9K
CLX icon
53
Clorox
CLX
$10.5B
$1.12M 0.07%
9,328
– –
ISTB icon
54
iShares Core 1-5 Year USD Bond ETF
ISTB
$5.09B
$923K 0.06%
18,966
+1,686
+10% +$81.4K
ACN icon
55
Accenture
ACN
$118B
$780K 0.05%
2,609
-189
-7% -$57.6K
ADP icon
56
Automatic Data Processing
ADP
$110B
$768K 0.05%
2,478
-230
-8% -$70.6K
CAT icon
57
Caterpillar
CAT
$360B
$748K 0.05%
1,926
-96,636
-98% -$32.2M
IVV icon
58
iShares Core S&P 500 ETF
IVV
$837B
$746K 0.05%
1,202
-58
-5% -$33.3K
CSCO icon
59
Cisco
CSCO
$434B
$734K 0.05%
10,577
-519,719
-98% -$31.9M
MU icon
60
Micron Technology
MU
$1.05T
$731K 0.05%
+5,929
New +$554K
SYK icon
61
Stryker
SYK
$108B
$730K 0.05%
1,841
-111
-6% -$41.5K
MRK icon
62
Merck
MRK
$355B
$717K 0.04%
8,968
-262
-3% -$20.8K
BMY icon
63
Bristol-Myers Squibb
BMY
$130B
$676K 0.04%
14,607
-1,643
-10% -$80.7K
RTX icon
64
RTX Corp
RTX
$263B
$655K 0.04%
4,485
+52
+1% +$6.93K
VTI icon
65
Vanguard Morningstar Total Stock Market ETF
VTI
$681B
$612K 0.04%
2,007
+9
+0.5% +$2.53K
CL icon
66
Colgate-Palmolive
CL
$69.4B
$609K 0.04%
6,699
– –
AMD icon
67
Advanced Micro Devices
AMD
$823B
$597K 0.04%
+4,205
New +$458K
SCHI icon
68
Schwab 5-10 Year Corporate Bond ETF
SCHI
$11.3B
$592K 0.04%
26,009
+10,105
+64% +$225K
QQQ icon
69
Invesco QQQ Trust
QQQ
$474B
$574K 0.04%
1,039
+249
+32% +$124K
INTU icon
70
Intuit
INTU
$88B
$563K 0.04%
+715
New +$484K
COIN icon
71
Coinbase
COIN
$45.4B
$543K 0.03%
+1,550
New +$362K
NTES icon
72
NetEase
NTES
$76.5B
$538K 0.03%
4,000
– –
BAC icon
73
Bank of America
BAC
$416B
$476K 0.03%
10,052
-4,822
-32% -$203K
IGLB icon
74
iShares 10+ Year Investment Grade Corporate Bond ETF
IGLB
$2.91B
$475K 0.03%
9,454
+2,949
+45% +$144K
ABT icon
75
Abbott
ABT
$177B
$471K 0.03%
3,464
-62
-2% -$8.18K
1 2
3
4 5

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OCM
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SP
Stairway Partners Chicago, Illinois $2.12B AUM 17.37% 1-Year Est. Return
CWP
Cyndeo Wealth Partners St. Petersburg, Florida $2.12B AUM 24.61% 1-Year Est. Return
CP
Caligan Partners New York $2.13B AUM 758.65% 1-Year Est. Return
PSC
Portman Square Capital London, United Kingdom $2.11B AUM 19.71% 1-Year Est. Return
MWA
Midland Wealth Advisors Effingham, Illinois $2.13B AUM 17.72% 1-Year Est. Return
GIC
Generali Investments CEE Prague, Czech Republic $2.11B AUM 25.53% 1-Year Est. Return

Main Street Research's Q2 2025 Portfolio in Review

As of Q2 2025, Main Street Research held 128 positions worth $1.61B, up 5% from $1.53B the previous quarter. Its ten largest holdings account for 40% of the portfolio.

Main Street Research withdrew a net $156M in Q2 2025, closing 13 positions and reducing 51 holdings. Its most notable exit was Parker-Hannifin, an estimated $33.4M position sold in full.

By sector, the portfolio is most concentrated in Technology at 31% of assets, down from 32% a quarter earlier, followed by Financials and Communication Services.

Against the trend, Main Street Research opened a new position in Uber worth $41.9M.

  • Main Street Research's largest Q2 2025 buy was Uber: 449,335 shares worth $41.9M.
  • Main Street Research added most to Walmart Inc in Q2 2025, an estimated $30.8M increase.
  • Main Street Research's biggest Q2 2025 reduction was Palantir, cutting an estimated $52.1M.
  • Main Street Research fully exited Parker-Hannifin in Q2 2025, selling an estimated $33.4M.
  • Main Street Research's ten largest holdings make up 40% of its $1.61B portfolio in Q2 2025.
  • Main Street Research opened 27 new positions and closed 13 in Q2 2025.
  • Main Street Research's portfolio value rose 5% quarter-over-quarter to $1.61B.

Based on Main Street Research's 13F filing for Q2 2025, filed 5 Aug 2025.