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
+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
AMD icon
51
Advanced Micro Devices
AMD
$791B
$1.92M 0.09%
3,308
+163
+5% +$66.8K
IVV icon
52
iShares Core S&P 500 ETF
IVV
$872B
$1.36M 0.06%
1,810
-744
-29% -$542K
PLTR icon
53
Palantir
PLTR
$293B
$1.34M 0.06%
11,444
-156,203
-93% -$21.3M
MMM icon
54
3M
MMM
$90.8B
$1.23M 0.06%
7,610
-260
-3% -$39.4K
ISTB icon
55
iShares Core 1-5 Year USD Bond ETF
ISTB
$5.11B
$1.19M 0.06%
24,592
+534
+2% +$25.8K
CSCO icon
56
Cisco
CSCO
$448B
$1.14M 0.05%
9,682
-375
-4% -$39.2K
QQQ icon
57
Invesco QQQ Trust
QQQ
$450B
$1.13M 0.05%
1,531
-238
-13% -$164K
RTX icon
58
RTX Corp
RTX
$289B
$1.09M 0.05%
5,752
-314
-5% -$57.6K
MRK icon
59
Merck
MRK
$321B
$1.07M 0.05%
8,298
-1,223
-13% -$143K
TXN icon
60
Texas Instruments
TXN
$255B
$1.06M 0.05%
3,560
+33
+0.9% +$9.15K
SCHI icon
61
Schwab 5-10 Year Corporate Bond ETF
SCHI
$11.5B
$1.05M 0.05%
46,488
+2,162
+5% +$49K
INTC icon
62
Intel
INTC
$460B
$1.03M 0.05%
7,350
+1,431
+24% +$145K
IGLB icon
63
iShares 10+ Year Investment Grade Corporate Bond ETF
IGLB
$2.63B
$987K 0.05%
19,721
+970
+5% +$48.3K
PHM icon
64
Pultegroup
PHM
$24.5B
$980K 0.05%
7,145
-237
-3% -$28.8K
ON icon
65
ON Semiconductor
ON
$32.6B
$980K 0.05%
10,363
+13
+0.1% +$1.33K
CRM icon
66
Salesforce
CRM
$148B
$909K 0.04%
5,802
-1,122
-16% -$197K
CRUS icon
67
Cirrus Logic
CRUS
$6.65B
$882K 0.04%
5,936
+202
+4% +$33.1K
LRCX icon
68
Lam Research
LRCX
$372B
$874K 0.04%
2,016
+28
+1% +$8.5K
CLX icon
69
Clorox
CLX
$11.7B
$853K 0.04%
8,934
-603
-6% -$57.9K
GS icon
70
Goldman Sachs
GS
$302B
$820K 0.04%
811
-63
-7% -$61.4K
C icon
71
Citigroup
C
$222B
$812K 0.04%
5,803
+277
+5% +$36.1K
DIA icon
72
State Street SPDR Dow Jones Industrial Average ETF Trust
DIA
$45.5B
$805K 0.04%
1,541
+39
+3% +$19.5K
CW icon
73
Curtiss-Wright
CW
$26.5B
$787K 0.04%
1,038
+26
+3% +$19.1K
UBER icon
74
Uber
UBER
$143B
$780K 0.04%
10,806
-685
-6% -$50.2K
CL icon
75
Colgate-Palmolive
CL
$73.3B
$769K 0.04%
8,390
+906
+12% +$79.3K
1 2
3
4 5

Similar funds

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
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

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.