'Biggest bottleneck in the AI buildup' fuels DRAM ETF to record

The Roundhill Memory ETF (DRAM) just hit $9.8 billion in assets under management in 43 days— the fastest pace ever for an exchange-traded fund, according to TMX VettaFi. Ahead of Thursday's milestone, the CEO of Roundhill Investments told CNBC's " ETF Edge " the rapid growth is tied to the limited number of companies involved in producing high-bandwidth memory or DRAM chips. They're considered integral to the artificial intelligence revolution. …