Or you just buy the largest stock in each one of the 7 largest sectors and it pretty much correlates to the sp500. ETF have some nasty hidden fees related to the etf price being more expensive than the basket when you buy and less than the basket when you sell.
Sector
Company 1
Company 2
Information Technology
Microsoft (MSFT)
Apple (AAPL)
Financials
JPMorgan Chase (JPM)
Berkshire Hathaway (BRK.B)
Health Care
Johnson & Johnson (JNJ)
UnitedHealth Group (UNH)
Consumer Discretionary
Amazon (AMZN)
Tesla (TSLA)
Communication Services
Alphabet (GOOGL)
Meta (META)
Industrials
Boeing (BA)
Caterpillar (CAT)
Energy
ExxonMobil (XOM)
Chevron (CVX)