https://www.investopedia.com/terms/e/etf.asp https://www.investopedia.com/terms/e/etf.asp https://www.investor.gov/introduction-investing/investing-basics/inve

https://www.investopedia.com/terms/e/etf.asp https://www.investopedia.com/terms/e/etf.asp https://www.investor.gov/introduction-investing/investing-basics/investment-products/mutual-funds-and-exchange-traded-2 https://www.investor.gov/introduction-investing/investing-ba... I think there's no buying X involved with an index ETF over X, in general, and I believe they are talking about an index etf here. (Of course, it still is some sort of gamble to trade in an index ETF.)