The Bogleheads' Guide: Three Funds, One Strategy

The Bogleheads' Guide to Investing emphasizes simple, low-cost, diversified portfolios using index funds over active management.

A three-fund portfolio with domestic stocks, international stocks, and bonds is recommended for broad diversification.

Simplicity in investing leads to lower costs, reduced complexity, and better behavioural outcomes over the long term.

UK investors can adapt the Boglehead philosophy using ISAs and SIPPs instead of US-centric accounts.