Cullen Roche, investment expert and CIO of Disciplined Funds, returns to share his ETF investing wisdom. He explains why there's no such thing as truly passive investing, detailing the mechanics of ETFs and their tax advantages. Cullen emphasizes the importance of selecting an appropriate ETF strategy tailored to personal goals and discusses the risks of solely relying on backtesting. He also covers the nuances of ETF costs and the implications of interest rates on investing, offering insights for both retail and institutional investors.