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Asset Manager ← All Institutions

Main Street Research LLC

342 MAIN STREET, LAKEVILLE, CT 06039 • 860-435-2350

Q1 2026 · Filed 2026-04-30
Market Value
$1.7B
+0.3%
Holdings
159
+14
New Purchases
31
Added To
75
Closed
11
Reduced
36
Top 10 Concentration
45.2%
Turnover
26.4%

Top Buys (by % of Portfolio)

SymbolCur %Prior %Chg %Value
GLW 3.07% 0.00% +3.07% $53M
BHP 2.20% 0.00% +2.20% $38M
AZN 2.19% 0.00% +2.19% $38M
RY 2.10% 0.00% +2.10% $36M
MU 2.14% 0.09% +2.06% $37M
KEYS 1.86% 0.00% +1.86% $32M
XBI 4.22% 2.56% +1.65% $72M
AAPL 5.96% 4.61% +1.35% $102M
GEV 2.57% 1.87% +0.70% $44M
ASML 3.20% 2.50% +0.70% $55M
EWY 2.59% 2.02% +0.57% $45M
CAT 2.52% 1.99% +0.53% $43M
TSM 4.39% 3.88% +0.51% $75M
JNJ 2.66% 2.17% +0.49% $46M
CCJ 2.46% 2.04% +0.42% $42M

Top Sells (by % of Portfolio)

SymbolCur %Prior %Chg %Value
HOOD 0.01% 3.51% -3.50% $228K
V 0.18% 3.56% -3.38% $3M
MSFT 1.45% 4.75% -3.29% $25M
PLTR 1.43% 4.57% -3.14% $25M
UBER 0.05% 2.13% -2.08% $827K
IBN 0.00% 1.78% -1.78% $0
BCS 1.05% 2.50% -1.45% $18M
BKNG 0.00% 1.19% -1.19% $0
META 2.36% 3.33% -0.97% $41M
COST 2.68% 3.14% -0.46% $46M
JPM 3.83% 4.17% -0.34% $66M
AVGO 3.83% 4.15% -0.32% $66M
AMZN 3.26% 3.50% -0.24% $56M
GOOGL 5.22% 5.43% -0.22% $90M
NVDA 6.30% 6.48% -0.18% $108M

Sector Allocation Over Time

Industry Breakdown

IndustryWeight
Technology 37.8%
Financial Services 24.1%
Healthcare 8.8%
Communication Services 8.1%
Consumer Defensive 6.6%

Market Cap Concentration

TierHoldingsValueWeight
Mega Cap 59 $1.2B 67.6%
Large Cap 88 $395M 23.0%
Mid Cap 9 $79M 4.6%
Small Cap 3 $82M 4.8%

Portfolio Analytics

Avg Market Cap
$400.1B
Median Market Cap
$142.4B
Avg P/E
38.0
Median P/E
27.8
Avg Dividend Yield
0.01%
Avg Beta
1.13
# Stocks
132
# ETFs / Funds
27

Top Holdings (159 total)

# Symbol % Port Shares Value Avg Price Q/Q Value Chg Share Chg Chg % Status
1 NVDA 6.30% 620,776 $108M $174.40 -$3M +24,932 +4.2%
2 AAPL 5.96% 403,578 $102M $253.79 $23M +112,641 +38.7%
3 GOOGL 5.22% 311,786 $90M $287.56 -$3M +14,242 +4.8%
4 ISCF 4.76% 1,958,627 $82M $41.79 $3M +50,827 +2.7%
5 TSM 4.39% 223,159 $75M $337.95 $9M +5,012 +2.3%
6 XBI 4.22% 567,479 $72M $127.73 $29M +206,953 +57.4%
7 JPM 3.83% 223,762 $66M $294.16 -$6M +1,843 +0.8%
8 AVGO 3.83% 212,402 $66M $309.51 -$5M +7,007 +3.4%
9 MCK 3.41% 67,774 $59M $865.36 $3M +413 +0.6%
10 AMZN 3.26% 269,193 $56M $208.27 -$4M +9,344 +3.6%
11 ASML 3.20% 41,687 $55M $1,320.83 $12M +1,569 +3.9%
12 GLW 3.07% 387,718 $53M $135.97 +387,718 NEW
13 COST 2.68% 46,139 $46M $996.43 -$8M -16,227 -26.0%
14 JNJ 2.66% 186,882 $46M $244.44 $9M +7,564 +4.2%
15 EWY 2.59% 361,874 $45M $123.01 $10M +6,413 +1.8%
16 GEV 2.57% 50,692 $44M $872.90 $12M +1,531 +3.1%
17 GLDM 2.53% 469,451 $44M $92.69 $4M +7,135 +1.5%
18 CAT 2.52% 61,110 $43M $708.46 $9M +1,551 +2.6%
19 WMT 2.49% 344,869 $43M $124.28 $5M +6,474 +1.9%
20 CCJ 2.46% 389,077 $42M $108.61 $7M +7,209 +1.9%
21 META 2.36% 70,962 $41M $572.13 -$17M -15,585 -18.0%
22 APH 2.21% 301,043 $38M $126.35 -$2M +5,686 +1.9%
23 BHP 2.20% 519,212 $38M $72.74 +519,212 NEW
24 AZN 2.19% 190,644 $38M $197.22 +190,644 NEW
25 MU 2.14% 109,109 $37M $337.84 $35M +103,786 +1949.8%
26 RY 2.10% 222,568 $36M $161.78 +222,568 NEW
27 KEYS 1.86% 112,937 $32M $282.37 +112,937 NEW
28 MSFT 1.45% 67,542 $25M $370.17 -$56M -100,665 -59.9%
29 PLTR 1.43% 167,647 $25M $146.28 -$54M -272,603 -61.9%
30 PG 1.27% 151,627 $22M $144.44 $249K +543 +0.4%
31 BCS 1.05% 850,971 $18M $21.16 -$25M -831,866 -49.4%
32 FICO 0.53% 8,464 $9M $1,067.54 $5M +5,972 +239.7%
33 IBIT 0.44% 196,085 $8M $38.42 -$1M +16,545 +9.2%
34 GOOG 0.39% 23,437 $7M $286.86 $419K +3,346 +16.6%
35 BRK-B 0.33% 11,978 $6M $479.20 -$350K -138 -1.1%
36 PANW 0.32% 34,024 $5M $160.32 $3M +20,789 +157.1%
37 MCD 0.28% 15,483 $5M $310.78 -$869K -3,105 -16.7%
38 TSLA 0.27% 12,337 $5M $371.76 -$1M -411 -3.2%
39 SCHW 0.25% 46,360 $4M $93.98 $1M +14,578 +45.9%
40 ANET 0.25% 34,981 $4M $122.78 +34,981 NEW
41 XOM 0.24% 23,924 $4M $169.66 $1M +715 +3.1%
42 WFC 0.22% 46,882 $4M $79.61 $2M +27,036 +136.2%
43 BRK-A 0.21% 5 $4M $718,140.00 -$183K
44 CVX 0.20% 16,851 $3M $206.90 $2M +7,331 +77.0%
45 ADSK 0.20% 14,403 $3M $239.40 -$782K +112 +0.8%
46 IXUS 0.19% 38,583 $3M $86.64 $670K +7,010 +22.2%
47 V 0.18% 10,246 $3M $302.24 -$58M -163,842 -94.1%
48 LLY 0.16% 2,908 $3M $919.66 $1M +1,489 +104.9%
49 URTH 0.15% 14,742 $3M $180.02 -$158K -396 -2.6%
50 ABBV 0.13% 10,258 $2M $217.49 $94K +903 +9.7%
51 SPY 0.12% 3,263 $2M $650.27 $301K +600 +22.5%
52 IVV 0.10% 2,554 $2M $653.12 $805K +1,294 +102.7%
53 CRM 0.08% 6,924 $1M $186.67 -$396K +560 +8.8%
54 RTX 0.07% 6,066 $1M $192.91 $162K +570 +10.4%
55 ISTB 0.07% 24,058 $1M $48.46 $56K +1,295 +5.7%
56 MRK 0.07% 9,521 $1M $120.29 $319K +1,737 +22.3%
57 MMM 0.07% 7,870 $1M $145.23 -$147K -189 -2.4%
58 DIS 0.06% 10,730 $1M $96.38 +10,730 NEW
59 QQQ 0.06% 1,769 $1M $577.03 $194K +424 +31.5%
60 SCHI 0.06% 44,326 $1M $22.68 $121K +5,833 +15.2%
61 UNP 0.06% 4,129 $1M $242.62 $460K +1,787 +76.3%
62 CLX 0.06% 9,537 $988K $103.63 $68K +412 +4.5%
63 IGLB 0.05% 18,751 $931K $49.63 $126K +2,810 +17.6%
64 PHM 0.05% 7,382 $868K $117.61 +7,382 NEW
65 CRUS 0.05% 5,734 $829K $144.62 +5,734 NEW
66 UBER 0.05% 11,491 $827K $71.93 -$36M -435,414 -97.4%
67 VOO 0.05% 1,332 $796K $597.74 $474K +819 +159.7%
68 CSCO 0.05% 10,057 $780K $77.59 $34K +373 +3.9%
69 GLD 0.05% 1,806 $777K $430.29 $504K +1,117 +162.1%
70 GS 0.04% 874 $739K $845.99 +874 NEW
71 DIA 0.04% 1,502 $696K $463.12 $387K +862 +134.7%
72 CW 0.04% 1,012 $689K $681.12 $184K +95 +10.4%
73 TXN 0.04% 3,527 $685K $194.14 $365K +1,685 +91.5%
74 ON 0.04% 10,350 $641K $61.92 +10,350 NEW
75 AMD 0.04% 3,145 $640K $203.43 -$93K -277 -8.1%
76 HSBC 0.04% 7,733 $638K $82.49 $32K +37 +0.5%
77 CL 0.04% 7,484 $638K $85.23 $115K +866 +13.1%
78 C 0.04% 5,526 $627K $113.41 $74K +786 +16.6%
79 BX 0.04% 5,317 $611K $114.99 +5,317 NEW
80 T 0.03% 20,193 $585K $28.99 $240K +6,279 +45.1%
81 BAC 0.03% 11,943 $582K $48.75 -$29K +825 +7.4%
82 SYK 0.03% 1,763 $579K $328.66 -$70K -80 -4.3%
83 PEP 0.03% 3,722 $578K $155.30 $271K +1,606 +75.9%
84 DHI 0.03% 3,808 $523K $137.22 +3,808 NEW
85 MUFG 0.03% 30,448 $517K $16.97 $38K +243 +0.8%
86 ORCL 0.03% 3,497 $514K $147.11 -$76K +466 +15.4%
87 ADI 0.03% 1,491 $474K $318.14 $136K +243 +19.5%
88 NTES 0.03% 4,085 $457K $111.94 -$93K +85 +2.1%
89 ADP 0.03% 2,232 $453K $203.18 -$144K -77 -3.3%
90 TMO 0.03% 900 $442K $491.53 -$225K -251 -21.8%
91 LRCX 0.02% 1,988 $425K $213.67 $164K +464 +30.4%
92 BMY 0.02% 6,942 $421K $60.65 -$368K -7,678 -52.5%
93 VTI 0.02% 1,289 $414K $320.81 -$102K -249 -16.2%
94 XYL 0.02% 3,319 $397K $119.50 -$53K +14 +0.4%
95 ABT 0.02% 3,859 $396K $102.68 -$62K +205 +5.6%
96 TT 0.02% 947 $395K $416.74 $26K
97 CMCSA 0.02% 13,520 $388K $28.71 $62K +2,608 +23.9%
98 ISRG 0.02% 839 $387K $460.99 $99K +331 +65.2%
99 EBAY 0.02% 4,175 $380K $91.02 $94K +889 +27.1%
100 BSX 0.02% 5,993 $376K $62.75 -$198K -30 -0.5%

New Positions

SymbolValue% Port
GLW $53M 3.07%
BHP $38M 2.20%
AZN $38M 2.19%
RY $36M 2.10%
KEYS $32M 1.86%
ANET $4M 0.25%
DIS $1M 0.06%
PHM $868K 0.05%
CRUS $829K 0.05%
GS $739K 0.04%
ON $641K 0.04%
BX $611K 0.04%
DHI $523K 0.03%
XLK $372K 0.02%
PTC $354K 0.02%

Sold Out Positions

SymbolValue% Port
BN —%
HIMS —%
IBM —%
IBN —%
GILD —%
BKNG —%
LIN —%
VIG —%
ITOT —%
TRMB —%
HUT.TO —%
View SEC EDGAR Filings for Main Street Research LLC →

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For informational purposes only. Not investment advice. Data sourced from SEC filings. Privacy Terms