We are live on ! Find out more
MSR

Main Street Research Portfolio holdings

AUM $2.12B
1-Year Est. Return 67.44%
This Fund
S&P 500
This Quarter Est. Return
+5%
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
$1.72B
AUM Growth
-$29.6M
Cap. Flow
-$3.57M
Cap. Flow %
-0.21%
Top 10 Hldgs %
45.18%
Holding
159
New
30
Increased
76
Reduced
36
Closed
11

Top Buys

Rank Stock Value
1
GLW icon
Corning
GLW
+$46.8M
2
MU icon
Micron Technology
MU
+$40.7M
3
RY icon
Royal Bank of Canada
RY
+$37.2M
4
BHP icon
BHP
BHP
+$36.7M
5
AAPL icon
Apple
AAPL
+$29.3M

Top Sells

Rank Stock Value
1
V icon
Visa
V
+$52.7M
2
HOOD icon
Robinhood
HOOD
+$46.4M
3
MSFT icon
Microsoft
MSFT
+$42.1M
4
PLTR icon
Palantir
PLTR
+$41.7M
5
UBER icon
Uber
UBER
+$33.5M

Sector Composition

Rank Sector Weight
1 Technology 37.78%
2 Healthcare 8.82%
3 Financials 8.46%
4 Communication Services 8.15%
5 Consumer Staples 6.59%
Name Market Value Portfolio Weight Shares or Principal Change
in Stake 		Capital Flow
HSBC icon
76
HSBC
HSBC
$352B
$638K 0.04%
7,733
+37
+0.5% +$3.13K
CL icon
77
Colgate-Palmolive
CL
$74.1B
$638K 0.04%
7,484
+866
+13% +$77.2K
C icon
78
Citigroup
C
$224B
$627K 0.04%
5,526
+786
+17% +$89.5K
BX icon
79
Blackstone
BX
$107B
$611K 0.04%
+5,317
New +$692K
T icon
80
AT&T
T
$162B
$585K 0.03%
20,193
+6,279
+45% +$168K
BAC icon
81
Bank of America
BAC
$441B
$582K 0.03%
11,943
+825
+7% +$42.6K
SYK icon
82
Stryker
SYK
$129B
$579K 0.03%
1,763
-80
-4% -$28.7K
PEP icon
83
PepsiCo
PEP
$189B
$578K 0.03%
3,722
+1,606
+76% +$250K
DHI icon
84
D.R. Horton
DHI
$40.8B
$523K 0.03%
+3,808
New +$575K
MUFG icon
85
Mitsubishi UFJ Financial
MUFG
$254B
$517K 0.03%
30,448
+243
+0.8% +$4.33K
ORCL icon
86
Oracle
ORCL
$413B
$514K 0.03%
3,497
+466
+15% +$75.7K
ADI icon
87
Analog Devices
ADI
$184B
$474K 0.03%
1,491
+243
+19% +$77.3K
NTES icon
88
NetEase
NTES
$83.5B
$457K 0.03%
4,085
+85
+2% +$10.5K
ADP icon
89
Automatic Data Processing
ADP
$109B
$453K 0.03%
2,232
-77
-3% -$17.7K
TMO icon
90
Thermo Fisher Scientific
TMO
$214B
$442K 0.03%
900
-251
-22% -$136K
LRCX icon
91
Lam Research
LRCX
$383B
$425K 0.02%
1,988
+464
+30% +$104K
BMY icon
92
Bristol-Myers Squibb
BMY
$131B
$421K 0.02%
6,942
-7,678
-53% -$448K
VTI icon
93
Vanguard Morningstar Total Stock Market ETF
VTI
$680B
$414K 0.02%
1,289
-249
-16% -$83.5K
XYL icon
94
Xylem
XYL
$28.2B
$397K 0.02%
3,319
+14
+0.4% +$1.84K
ABT icon
95
Abbott
ABT
$187B
$396K 0.02%
3,859
+205
+6% +$23.1K
TT icon
96
Trane Technologies
TT
$105B
$395K 0.02%
947
– –
CMCSA icon
97
Comcast
CMCSA
$89.3B
$388K 0.02%
13,520
+2,608
+24% +$78K
ISRG icon
98
Intuitive Surgical
ISRG
$132B
$387K 0.02%
839
+331
+65% +$167K
EBAY icon
99
eBay
EBAY
$48.9B
$380K 0.02%
4,175
+889
+27% +$79.9K
BSX icon
100
Boston Scientific
BSX
$71.4B
$376K 0.02%
5,993
-30
-0.5% -$2.4K
2 3
4
5 6

Similar funds

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
Hardman Johnston Global Advisors Stamford, Connecticut $2.1B AUM 41.89% 1-Year Est. Return
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
Strategic Financial Services Utica, New York $2.1B AUM 19.14% 1-Year Est. Return
AAP
Aristotle Atlantic Partners Sarasota, Florida $2.14B AUM 37.01% 1-Year Est. Return

Main Street Research's Q1 2026 Portfolio in Review

As of Q1 2026, Main Street Research held 159 positions worth $1.72B, down 1.7% from $1.75B the previous quarter. Its ten largest holdings account for 45% of the portfolio.

Main Street Research's Q1 2026 filing shows 30 new, 76 increased, 36 reduced and 11 closed positions. Its largest new stake was Corning: 387,718 shares worth $52.7M. The largest sale was Visa, an estimated $52.7M.

By sector, the portfolio is most concentrated in Technology at 38% of assets, up from 36% a quarter earlier, followed by Healthcare and Financials.

  • Main Street Research's largest Q1 2026 buy was Corning: 387,718 shares worth $52.7M.
  • Main Street Research added most to Micron Technology in Q1 2026, an estimated $40.7M increase.
  • Main Street Research's biggest Q1 2026 reduction was Visa, cutting an estimated $52.7M.
  • Main Street Research fully exited ICICI Bank in Q1 2026, selling an estimated $30.5M.
  • Main Street Research's ten largest holdings make up 45% of its $1.72B portfolio in Q1 2026.
  • Main Street Research opened 30 new positions and closed 11 in Q1 2026.
  • Main Street Research's portfolio value fell 1.7% quarter-over-quarter to $1.72B.

Based on Main Street Research's 13F filing for Q1 2026, filed 30 Apr 2026.