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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
+37.04%
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
$2.12B
AUM Growth
+$400M
Cap. Flow
-$6.17M
Cap. Flow %
-0.29%
Top 10 Hldgs %
48.91%
Holding
161
New
13
Increased
64
Reduced
53
Closed
21

Top Buys

Rank Stock Value
1
ROST icon
Ross Stores
ROST
+$33.9M
2
FTI icon
TechnipFMC
FTI
+$29.3M
3
BCS icon
Barclays
BCS
+$18.6M
4
ISCF icon
iShares International Small Cap Equity Factor ETF
ISCF
+$3.04M
5
TSM icon
TSMC
TSM
+$2.14M

Top Sells

Rank Stock Value
1
GLDM icon
SPDR Gold MiniShares Trust
GLDM
+$43.5M
2
MCK icon
McKesson
MCK
+$31.2M
3
PLTR icon
Palantir
PLTR
+$21.3M
4
IBIT icon
iShares Bitcoin Trust
IBIT
+$7.53M
5
PANW icon
Palo Alto Networks
PANW
+$2.44M

Sector Composition

Rank Sector Weight
1 Technology 42.89%
2 Financials 9.02%
3 Communication Services 7.71%
4 Industrials 6.2%
5 Healthcare 5.5%
Name Market Value Portfolio Weight Shares or Principal Change
in Stake 		Capital Flow
VOO icon
76
Vanguard S&P 500 ETF
VOO
$972B
$759K 0.04%
1,104
-228
-17% -$152K
HSBC icon
77
HSBC
HSBC
$367B
$739K 0.03%
7,772
+39
+0.5% +$3.56K
BAC icon
78
Bank of America
BAC
$433B
$676K 0.03%
11,869
-74
-0.6% -$3.94K
DHI icon
79
D.R. Horton
DHI
$40.7B
$664K 0.03%
4,075
+267
+7% +$39.8K
UNP icon
80
Union Pacific
UNP
$172B
$656K 0.03%
2,413
-1,716
-42% -$451K
MUFG icon
81
Mitsubishi UFJ Financial
MUFG
$254B
$651K 0.03%
32,721
+2,273
+7% +$42.8K
FTNT icon
82
Fortinet
FTNT
$113B
$647K 0.03%
4,214
+139
+3% +$16.1K
BX icon
83
Blackstone
BX
$102B
$593K 0.03%
5,036
-281
-5% -$33.8K
DAL icon
84
Delta Air Lines
DAL
$58.3B
$587K 0.03%
6,263
+1,172
+23% +$88.5K
CRWD icon
85
CrowdStrike
CRWD
$189B
$568K 0.03%
2,976
+464
+18% +$65.9K
ADI icon
86
Analog Devices
ADI
$179B
$554K 0.03%
1,395
-96
-6% -$38K
XLK icon
87
State Street Technology Select Sector SPDR ETF
XLK
$115B
$533K 0.03%
2,800
– –
EBAY icon
88
eBay
EBAY
$50.4B
$530K 0.03%
4,739
+564
+14% +$60.2K
NTES icon
89
NetEase
NTES
$84.4B
$523K 0.02%
4,085
– –
ORCL icon
90
Oracle
ORCL
$367B
$514K 0.02%
3,505
+8
+0.2% +$1.45K
SOXX icon
91
iShares Semiconductor ETF
SOXX
$41.7B
$494K 0.02%
771
– –
KLAC icon
92
KLA
KLAC
$236B
$484K 0.02%
1,604
-166
-9% -$33K
ADP icon
93
Automatic Data Processing
ADP
$105B
$469K 0.02%
2,092
-140
-6% -$29.9K
TT icon
94
Trane Technologies
TT
$97.3B
$466K 0.02%
948
+1
+0.1% +$468
VTI icon
95
Vanguard Morningstar Total Stock Market ETF
VTI
$657B
$464K 0.02%
1,255
-34
-3% -$12.2K
IGM icon
96
iShares Expanded Tech Sector ETF
IGM
$10B
$461K 0.02%
2,816
+884
+46% +$132K
HUT
97
Hut 8
HUT
$12.2B
$460K 0.02%
+3,986
New +$386K
PEP icon
98
PepsiCo
PEP
$191B
$456K 0.02%
3,365
-357
-10% -$53.4K
LEN icon
99
Lennar Class A
LEN
$20.2B
$406K 0.02%
4,483
+579
+15% +$51.8K
TMO icon
100
Thermo Fisher Scientific
TMO
$214B
$401K 0.02%
800
-100
-11% -$48K
2 3
4
5 6

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BCM
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EF
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IVAV
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HJGA
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CF
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BWC
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SFS
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Main Street Research's Q2 2026 Portfolio in Review

As of Q2 2026, Main Street Research held 161 positions worth $2.12B, up 23% from $1.72B the previous quarter. Its ten largest holdings account for 49% of the portfolio.

Main Street Research's Q2 2026 filing shows 13 new, 64 increased, 53 reduced and 21 closed positions. Its largest new stake was Ross Stores: 150,755 shares worth $32.1M. The largest sale was SPDR Gold MiniShares Trust, an estimated $43.5M.

By sector, the portfolio is most concentrated in Technology at 43% of assets, up from 38% a quarter earlier, followed by Financials and Communication Services.

  • Main Street Research's largest Q2 2026 buy was Ross Stores: 150,755 shares worth $32.1M.
  • Main Street Research added most to Barclays in Q2 2026, an estimated $18.6M increase.
  • Main Street Research's biggest Q2 2026 reduction was McKesson, cutting an estimated $31.2M.
  • Main Street Research fully exited SPDR Gold MiniShares Trust in Q2 2026, selling an estimated $43.5M.
  • Main Street Research's ten largest holdings make up 49% of its $2.12B portfolio in Q2 2026.
  • Main Street Research opened 13 new positions and closed 21 in Q2 2026.
  • Main Street Research's portfolio value rose 23% quarter-over-quarter to $2.12B.

Based on Main Street Research's 13F filing for Q2 2026, filed 29 Jul 2026.