What Is the S&P 500 and How to Buy It in the UK

The S&P 500 tracks the 500 largest US-listed companies by market cap and covers around 80% of total US equity market value.

It has returned roughly 10% per year nominal in USD over the last 70 years, but is now heavily concentrated in mega-cap tech.

UK investors cannot buy US-listed S&P 500 ETFs like SPY or VOO directly. They use UCITS-compliant equivalents listed on the London Stock Exchange.

CSPX (iShares Core S&P 500), VUAG (Vanguard S&P 500), and SPXP (Invesco S&P 500) are the three most widely held UK options, all charging between 0.05% and 0.07%.