Memory stock prices have soared this year amid a shortage driven by artificial intelligence (AI). If you're looking for an easy way to invest in these stocks, a recently launched exchange-traded fund (ETF), the Roundhill Memory ETF (NYSEMKT: DRAM), holds the biggest names. The ETF trades for about $72 as of June 17, so $100 is enough for more than 1.25 shares if your broker offers fractional trading. Here are more details to help you decide if this ETF is right for your portfolio.