Roundhill's DRAM ETF notches $6B on memory demand, here’s their next big idea
Dave Mazza, Roundhill Investments CEO, and Drew Pettit, Citi research director of U.S. Equity Strategy and ETF Strategy, joins CNBC's Contessa Brewer on 'ETF Edge' to discuss the interest in Roundhill's Memory ETF (DRAM), the record flows and if the appetite has more room to run.

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