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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
AZN icon
26
AstraZeneca
AZN
$269B
$37.4M 1.77%
197,417
+6,773
+4% +$1.27M
ROST icon
27
Ross Stores
ROST
$80.8B
$32.1M 1.51%
+150,755
New +$33.9M
FTI icon
28
TechnipFMC
FTI
$28.6B
$27.4M 1.29%
+413,657
New +$29.3M
MSFT icon
29
Microsoft
MSFT
$2.9T
$25.8M 1.22%
69,182
+1,640
+2% +$664K
PG icon
30
Procter & Gamble
PG
$340B
$22.2M 1.05%
151,073
-554
-0.4% -$80.6K
MCK icon
31
McKesson
MCK
$104B
$21.5M 1.02%
28,475
-39,299
-58% -$31.2M
FICO icon
32
Fair Isaac
FICO
$31.8B
$11.4M 0.54%
9,580
+1,116
+13% +$1.25M
GOOG icon
33
Alphabet (Google) Class C
GOOG
$4.11T
$8.02M 0.38%
22,707
-730
-3% -$261K
PANW icon
34
Palo Alto Networks
PANW
$256B
$7.96M 0.38%
23,343
-10,681
-31% -$2.44M
BRK.B icon
35
Berkshire Hathaway Class B
BRK.B
$1.1T
$5.99M 0.28%
11,980
+2
+0% +$962
ANET icon
36
Arista Networks
ANET
$199B
$5.94M 0.28%
34,937
-44
-0.1% -$6.91K
TSLA icon
37
Tesla
TSLA
$1.18T
$5.44M 0.26%
12,943
+606
+5% +$241K
SCHW
38
Charles Schwab
SCHW
$182B
$4.23M 0.2%
45,887
-473
-1% -$43.1K
WFC icon
39
Wells Fargo
WFC
$254B
$4.01M 0.19%
48,542
+1,660
+4% +$133K
BRK.A icon
40
Berkshire Hathaway Class A
BRK.A
$1.1T
$3.74M 0.18%
5
– –
IXUS icon
41
iShares Core MSCI Total International Stock ETF
IXUS
$56.8B
$3.73M 0.18%
39,073
+490
+1% +$46.1K
LLY icon
42
Eli Lilly
LLY
$1.08T
$3.29M 0.16%
2,746
-162
-6% -$166K
V icon
43
Visa
V
$677B
$3.21M 0.15%
9,369
-877
-9% -$282K
XOM icon
44
ExxonMobil
XOM
$650B
$3.07M 0.14%
22,437
-1,487
-6% -$223K
ADSK icon
45
Autodesk
ADSK
$51.8B
$2.77M 0.13%
14,240
-163
-1% -$37.2K
URTH icon
46
iShares MSCI World ETF
URTH
$7.83B
$2.74M 0.13%
13,511
-1,231
-8% -$244K
CVX icon
47
Chevron
CVX
$382B
$2.67M 0.13%
16,080
-771
-5% -$144K
SPY icon
48
State Street SPDR S&P 500 ETF Trust
SPY
$771B
$2.6M 0.12%
3,485
+222
+7% +$161K
ABBV icon
49
AbbVie
ABBV
$465B
$2.45M 0.12%
9,721
-537
-5% -$116K
MCD icon
50
McDonald's
MCD
$193B
$2.41M 0.11%
8,913
-6,570
-42% -$1.88M
1
2
3 4 5

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GS
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BCM
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EF
Empirical Finance Havertown, Pennsylvania $2.13B AUM 29.56% 1-Year Est. Return
IVAV
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HJGA
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CF
Centaurus Financial Anaheim, California $2.1B AUM 21.28% 1-Year Est. Return
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.