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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
PH icon
126
Parker-Hannifin
PH
$117B
– –
-54,903
Closed -$33.4M
QCOM icon
127
Qualcomm
QCOM
$201B
– –
-1,485
Closed -$228K
USFR icon
128
WisdomTree Floating Rate Treasury Fund
USFR
$19.3B
– –
-6,561
Closed -$330K
2 3 4 5
6

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OCM
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SP
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CWP
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CP
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PSC
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MWA
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GIC
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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.