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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
NVDA icon
1
NVIDIA
NVDA
$4.72T
$94M 5.85%
595,176
+147,407
+33% +$18.6M
JPM icon
2
JPMorgan Chase
JPM
$933B
$65M 4.05%
224,286
+5,611
+3% +$1.43M
PG icon
3
Procter & Gamble
PG
$335B
$64.8M 4.04%
406,912
+9,830
+2% +$1.6M
PLTR icon
4
Palantir
PLTR
$293B
$62.9M 3.92%
461,432
-444,201
-49% -$52.1M
COST icon
5
Costco
COST
$423B
$62.2M 3.87%
62,849
+894
+1% +$889K
V icon
6
Visa
V
$673B
$61.2M 3.81%
172,420
+1,054
+0.6% +$367K
AAPL icon
7
Apple
AAPL
$4.9T
$60.4M 3.76%
294,394
-79,167
-21% -$16M
NFLX icon
8
Netflix
NFLX
$305B
$57M 3.55%
425,900
+8,880
+2% +$1M
BRK.B icon
9
Berkshire Hathaway Class B
BRK.B
$1.1T
$56.4M 3.51%
116,181
+4,761
+4% +$2.42M
GOOGL icon
10
Alphabet (Google) Class A
GOOGL
$4.08T
$52.4M 3.26%
297,345
+10,180
+4% +$1.67M
AVGO icon
11
Broadcom
AVGO
$1.85T
$50.9M 3.17%
184,625
-81,225
-31% -$17.6M
MCK icon
12
McKesson
MCK
$101B
$50.7M 3.16%
69,178
+522
+0.8% +$368K
HOOD icon
13
Robinhood
HOOD
$77.7B
$50.3M 3.13%
+536,736
New +$31.8M
AMZN icon
14
Amazon
AMZN
$2.53T
$49.2M 3.06%
224,164
-88,286
-28% -$17.5M
MSFT icon
15
Microsoft
MSFT
$3.35T
$47.1M 2.93%
94,702
-38,919
-29% -$16.9M
META icon
16
Meta Platforms (Facebook)
META
$1.37T
$47M 2.92%
63,647
-39,353
-38% -$24.3M
TMUS icon
17
T-Mobile US
TMUS
$186B
$42.8M 2.66%
179,654
+1,752
+1% +$428K
UBER icon
18
Uber
UBER
$143B
$41.9M 2.61%
+449,335
New +$37M
MELI icon
19
Mercado Libre
MELI
$95.6B
$41.1M 2.56%
15,728
+480
+3% +$1.12M
BSX icon
20
Boston Scientific
BSX
$68.4B
$41M 2.55%
381,293
+8,518
+2% +$862K
SPOT icon
21
Spotify
SPOT
$107B
$38.2M 2.38%
+49,819
New +$32M
SAP icon
22
SAP
SAP
$209B
$36.7M 2.29%
120,723
+955
+0.8% +$274K
IBN icon
23
ICICI Bank
IBN
$109B
$35M 2.18%
1,040,030
+16,759
+2% +$555K
LIN icon
24
Linde
LIN
$235B
$34M 2.12%
72,478
+2,187
+3% +$998K
TT icon
25
Trane Technologies
TT
$97.3B
$33.4M 2.08%
+76,349
New +$30.1M
1
2 3 4 5

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GS
Gilead Sciences Foster City, California $2.12B AUM 143.53% 1-Year Est. Return
BCM
Basswood Capital Management New York $2.12B AUM 19.53% 1-Year Est. Return
EF
Empirical Finance Havertown, Pennsylvania $2.13B AUM 29.56% 1-Year Est. Return
IVAV
Index Venture Associates VI St. Helier, Channel Islands, Jersey $2.11B AUM 13.76% 1-Year Est. Return
HJGA
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CF
Centaurus Financial Anaheim, California $2.1B AUM 21.28% 1-Year Est. Return
BWC
Blue Whale Capital London, United Kingdom $2.1B AUM 97.03% 1-Year Est. Return
SFS
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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.