CNBC’s Bob Pisani spoke with Cathie Wood, CEO and CIO at Ark Invest, and Jay Jacobs, SVP and head of research and strategy at Global X ETFs, to discuss their tech-forward exchange-traded funds. Noah Hamman, CEO and founder of AdvisorShares, also explains how his firm’s long-short exchange-traded funds can help investors diversify their portfolios and hedge against unexpected declines. In the 'Markets 102' section, Bob discusses the evolving ETF landscape.

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