The sales pitch for AI-powered ETFs was that algorithms could not only pick stocks more efficiently and logically than humans, but also less expensively. So far, most haven’t lived up to investors’ expectations. AI-driven strategies use algorithms to research and gather data on stocks and investments to select a fund’s underlying holdings. Developers of such ETFs were betting that AI could build a valuable niche by processing information faster than any human analyst, spotting trends before the rest of Wa ...