Chart of Day: The Vanguard S&P 500 ETF (VOO)

“Over the years, I’ve often been asked for investment advice,” billionaire Warrant Buffett once wrote in a 2013 shareholder letter. “My regular recommendation has been a low-cost S&P 500 index fund.” With that, Buffett would name the Vanguard S&P 500 ETF (NYSEARCA: VOO). One of its biggest selling points is its low cost. VOO charges...