BlackRock is seeing a shift among Big Tech investors. Jay Jacobs, the firm's U.S. head of equity ETFs, finds they're going for targeted themes like artificial intelligence. "One of the biggest trades we're seeing this year is simply people leaving the traditional tech sector and getting more granular into AI-specific ETFs, like BAI [ the iShares A.I. Innovation and Tech Active ETF ] from BlackRock," Jacobs told CNBC's "ETF Edge" this week. The fund gives investors exposure from semiconductor