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Super Investors MainStreet Investment Advisors LLC
MI

MainStreet Investment Advisors LLC

Quarterly 13F snapshot: US-listed longs only, no performance figures — 13F data cannot support them.

Portfolio value
$734M
Positions
166
Quarter ended
June 30, 2026
Filed
August 12, 2026

Reported portfolio value by quarter (35 quarters reported)

$1.46B $647M
Q4 17 Q3 19 Q2 21 Q1 23 Q4 24 Q2 26

$653M in Q4 2017 → $734M now. Hover for any quarter.

Holdings

As reported for the quarter ended June 30, 2026. Activity is the change in share count since the prior quarter's filing.

Holding % of portfolio Activity Shares Value
IC Ishares Core S&P Mid-cap ETF 6.3% Trimmed 6.2% 595,959 $46M
IM Ishares Msci Eafe ETF 5.7% Trimmed 2.2% 404,826 $42.1M
Apple Inc 5.1% Trimmed 3.2% 129,063 $37.3M
VS Vanguard Short-term Treasury E 4.0% Added 0.3% 501,923 $29.2M
Microsoft Corp 3.4% Trimmed 0.1% 67,883 $25.3M
Alphabet Inc 3.1% Trimmed 8.9% 62,711 $22.4M
IC Ishares Core S&P Small-cap ETF 2.9% Trimmed 6.5% 143,922 $21.3M
Jpmorgan Chase & Co 2.8% Trimmed 0.3% 62,999 $20.6M
IC Ishares Core S&P 500 ETF 2.4% Added 29% 23,168 $17.4M
Caterpillar Inc 2.4% Trimmed 12% 16,262 $17.3M
Blackrock Inc 2.2% Trimmed 0.8% 16,894 $16.2M
Johnson & Johnson 2.2% Added 0.5% 63,190 $16M
Broadcom Inc 2.2% Added 1.4% 42,003 $15.9M
Nvidia Corp 2.1% Added 1.9% 76,679 $15.3M
VI Vanguard Intermediate-term Tre 2.0% Added 5.4% 252,978 $14.9M
Abbvie Inc 1.8% Trimmed 0.2% 53,744 $13.5M
Amazon.com Inc 1.6% Trimmed 1.5% 50,094 $11.9M
VF Vanguard Ftse Emerging Markets 1.5% Trimmed 2.7% 186,625 $11.1M
P& Procter & Gamble Co/the 1.5% Trimmed 0.0% 72,717 $10.7M
Waste Management Inc 1.3% Added 0.2% 44,255 $9.86M
HD Home Depot Inc/the 1.3% Added 0.1% 27,446 $9.68M
Chevron Corp 1.2% Added 2.5% 54,730 $9.07M
Cisco Systems Inc 1.1% Trimmed 1.0% 70,975 $8.34M
Mcdonald's Corp 1.0% Added 1.1% 28,457 $7.69M
Pepsico Inc 1.0% Trimmed 2.1% 53,461 $7.24M
Microchip Technology Inc 1.0% Trimmed 0.1% 77,136 $7.03M
Emerson Electric Co 0.9% Added 1.2% 48,254 $6.91M
Palo Alto Networks Inc 0.9% Added 0.7% 19,401 $6.62M
GS Goldman Sachs Group Inc/the 0.9% Added 4.2% 6,408 $6.48M
SC Southern Co/the 0.9% Added 2.6% 65,921 $6.31M
Lockheed Martin Corp 0.8% Added 1.5% 11,520 $5.87M
UB Us Bancorp 0.7% Added 2.3% 88,767 $5.36M
Visa Inc 0.7% Trimmed 1.6% 15,586 $5.35M
Altria Group Inc 0.7% Added 3.0% 73,176 $5.27M
American Electric Power Co Inc 0.7% Added 4.6% 38,063 $5.21M
VT Vanguard Total Bond Market ETF 0.7% Added 7.7% 67,144 $4.93M
Tesla Inc 0.7% Added 0.0% 11,523 $4.85M
Qualcomm Inc 0.6% Trimmed 0.7% 25,779 $4.76M
Walmart Inc 0.6% Added 1.2% 41,082 $4.65M
IB International Business Machine 0.6% Added 2.5% 16,136 $4.54M
Cummins Inc 0.6% Trimmed 0.7% 6,218 $4.43M
Meta Platforms Inc 0.6% Trimmed 9.6% 7,865 $4.43M
Paychex Inc 0.6% Trimmed 3.0% 43,937 $4.32M
Enbridge Inc 0.6% Added 6.3% 79,604 $4.32M
MI Marriott International Inc/md 0.6% Trimmed 1.2% 11,601 $4.3M
Cadence Design Systems Inc 0.6% Trimmed 1.5% 11,020 $4.14M
Honeywell International Inc 0.6% New 18,469 $4.14M
HA Honeywell Aerospace Inc 0.6% New 18,660 $4.13M
IM Ishares Msci Acwi ETF 0.5% Trimmed 1.5% 25,719 $4.04M
Merck & Co Inc 0.5% Added 1.3% 31,131 $4M
Prudential Financial Inc 0.5% Added 1.0% 36,997 $3.99M
Morgan Stanley 0.5% Trimmed 2.4% 18,809 $3.93M
Marvell Technology Inc 0.5% Added 0.5% 12,801 $3.81M
General Dynamics Corp 0.5% Added 0.5% 10,368 $3.67M
Cme Group Inc 0.5% Added 2.5% 15,272 $3.37M
Medtronic PLC 0.5% Trimmed 1.8% 42,878 $3.35M
BO Bank Of New York Mellon Corp/t 0.4% Added 2.4% 22,646 $3.27M
Air Products And Chemicals Inc 0.4% Added 880% 11,084 $3.25M
Verizon Communications Inc 0.4% Added 5.1% 76,691 $3.25M
Advanced Micro Devices Inc 0.4% Added 15% 5,582 $3.24M

Showing top 60 of 166 positions.

Timeline of changes

What changed each quarter, from the filings' own share counts. Largest moves first; most recent 8 quarters.

Q2 2026

quarter ended June 30, 2026 · filed August 12, 2026

Company Action Shares changed Value of change % of portfolio
Honeywell International Inc Exited −36,709 −$8.3M —
Honeywell International Inc New +18,469 +$4.14M 0.6%
HA Honeywell Aerospace Inc New +18,660 +$4.13M 0.6%
IC Ishares Core S&P 500 ETF Added +5,259 +$3.94M 2.4%
Genuine Parts Co Trimmed −26,127 −$3.08M —
IC Ishares Core S&P Mid-cap ETF Trimmed −39,120 −$3.02M 6.3%
Air Products And Chemicals Inc Added +9,953 +$2.92M 0.4%
Public Storage Trimmed −8,030 −$2.56M 0.2%
Caterpillar Inc Trimmed −2,308 −$2.46M 2.4%
HC Harbor Commodity All Weather S New +79,741 +$2.34M 0.3%

Showing the 10 largest of 164 changes.

Q1 2026

quarter ended March 31, 2026 · filed May 11, 2026

Company Action Shares changed Value of change % of portfolio
Caterpillar Inc Trimmed −3,417 −$2.42M 2.0%
SS State Street SPDR S&P 500 Esg New +37,479 +$2.36M 0.4%
Rtx Corp New +10,971 +$2.12M 0.3%
Rtx Corp Exited −10,705 −$1.96M —
Apple Inc Trimmed −6,762 −$1.72M 5.1%
Alphabet Inc Trimmed −5,316 −$1.53M 3.0%
Eog Resources Inc Trimmed −10,284 −$1.49M 0.3%
IE Ishares Esg Msci Kld 400 ETF Trimmed −11,225 −$1.36M 0.1%
IC Ishares Core S&P Mid-cap ETF Trimmed −19,767 −$1.33M 6.5%
IE Ishares Esg Aware Msci Eafe Et New +11,635 +$1.11M 0.2%

Showing the 10 largest of 161 changes.

Q4 2025

quarter ended December 31, 2025 · filed February 10, 2026

Company Action Shares changed Value of change % of portfolio
IM Ishares Msci Eafe ETF Trimmed −29,585 −$2.84M 5.8%
Apple Inc Trimmed −9,843 −$2.68M 5.5%
Microsoft Corp Trimmed −5,491 −$2.66M 4.9%
IC Ishares Core S&P Mid-cap ETF Trimmed −31,403 −$2.07M 6.2%
Jpmorgan Chase & Co Trimmed −6,120 −$1.97M 3.0%
Alphabet Inc Trimmed −5,499 −$1.72M 3.3%
IC Ishares Core S&P 500 ETF Trimmed −2,487 −$1.7M 1.7%
VS Vanguard Short-term Treasury E Trimmed −28,860 −$1.69M 4.3%
Caterpillar Inc Trimmed −2,706 −$1.55M 1.8%
Blackrock Inc Trimmed −1,440 −$1.54M 2.7%

Showing the 10 largest of 159 changes.

Q3 2025

quarter ended September 30, 2025 · filed November 10, 2025

Company Action Shares changed Value of change % of portfolio
IB International Business Machine New +14,131 +$3.99M 0.5%
Microsoft Corp Trimmed −5,720 −$2.96M 5.3%
IC Ishares Core S&P Mid-cap ETF Trimmed −38,920 −$2.54M 6.0%
Applied Materials Inc Trimmed −11,825 −$2.42M 0.1%
IM Ishares Msci Eafe ETF Trimmed −25,212 −$2.35M 5.7%
BO Bank Of New York Mellon Corp/t New +20,474 +$2.23M 0.3%
Jpmorgan Chase & Co Trimmed −7,005 −$2.21M 3.0%
Adobe Inc Trimmed −6,196 −$2.19M 0.2%
Apple Inc Trimmed −8,530 −$2.17M 5.1%
Unitedhealth Group Inc Trimmed −6,004 −$2.07M 0.2%

Showing the 10 largest of 154 changes.

Q2 2025

quarter ended June 30, 2025 · filed August 11, 2025

Company Action Shares changed Value of change % of portfolio
VS Vanguard Short-term Treasury E Added +68,183 +$4.01M 4.2%
VI Vanguard Intermediate-term Tre Added +55,983 +$3.35M 2.0%
IM Ishares Msci Eafe ETF Trimmed −28,137 −$2.52M 5.9%
IC Ishares Core S&P Mid-cap ETF Trimmed −34,025 −$2.11M 6.2%
Jacobs Solutions Inc Exited −16,849 −$2.04M —
Microsoft Corp Trimmed −3,321 −$1.65M 5.6%
Duke Energy Corp New +13,788 +$1.63M 0.2%
Thermo Fisher Scientific Inc New +3,336 +$1.35M 0.2%
P0 Pimco 0-5 Year High Yield Corp Exited −13,542 −$1.27M —
IC Ishares Core S&P Small-cap ETF Trimmed −11,163 −$1.22M 2.6%

Showing the 10 largest of 148 changes.

Q1 2025

quarter ended March 31, 2025 · filed April 30, 2025

Company Action Shares changed Value of change % of portfolio
IC Ishares Core S&P 500 ETF New +20,362 +$11.4M 1.7%
Microsoft Corp Trimmed −4,411 −$1.66M 4.6%
IM Ishares Msci Eafe ETF Trimmed −20,254 −$1.66M 6.0%
Apple Inc Trimmed −6,684 −$1.48M 5.3%
IE Ishares Esg Msci Kld 400 ETF New +14,101 +$1.44M 0.2%
Freeport-mcmoran Inc Exited −37,688 −$1.44M —
Honeywell International Inc Trimmed −6,640 −$1.41M 1.6%
IC Ishares Core S&P Mid-cap ETF Trimmed −23,328 −$1.36M 6.4%
VS Vanguard Short-term Treasury E Trimmed −19,009 −$1.12M 3.8%
Marvell Technology Inc New +16,733 +$1.03M 0.1%

Showing the 10 largest of 151 changes.

Q4 2024

quarter ended December 31, 2024 · filed February 14, 2025

Company Action Shares changed Value of change % of portfolio
IC Ishares Core S&P 500 ETF Exited −21,245 −$12.3M —
Dow Inc Exited −102,107 −$5.58M —
Starbucks Corp Trimmed −55,097 −$5.03M 0.2%
Qualcomm Inc New +31,930 +$4.91M 0.7%
Cvs Health Corp Exited −62,103 −$3.91M —
GS Goldman Sachs Group Inc/the New +6,722 +$3.85M 0.5%
Comcast Corp New +77,114 +$2.89M 0.4%
Palo Alto Networks Inc Added +9,087 +$1.65M 0.5%
IM Ishares Msci Eafe ETF Trimmed −20,483 −$1.55M 5.6%
IM Ishares Msci Kld 400 Social Et Exited −14,078 −$1.53M —

Showing the 10 largest of 154 changes.

Q3 2024

quarter ended September 30, 2024 · filed November 12, 2024

Company Action Shares changed Value of change % of portfolio
Blackrock Inc New +21,882 +$20.8M 2.8%
Blackrock Inc Exited −25,205 −$19.8M —
IM Ishares Msci Eafe ETF Trimmed −129,827 −$10.9M 6.1%
IC Ishares Core S&P Mid-cap ETF Trimmed −158,857 −$9.9M 6.7%
Microsoft Corp Trimmed −17,188 −$7.4M 5.2%
Broadcom Inc Added +38,338 +$6.61M 1.0%
Apple Inc Trimmed −24,572 −$5.73M 5.4%
IC Ishares Core S&P Small-cap ETF Trimmed −42,845 −$5.01M 3.1%
Alphabet Inc Trimmed −28,179 −$4.67M 2.1%
Starbucks Corp Trimmed −47,558 −$4.64M 1.0%

Showing the 10 largest of 148 changes.

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