Historically, the Vanguard S&P 500 ETF (VOO) and the Vanguard Total Stock Market ETF (VTI) offer very similar dividend yields, typically tracking closely together within a narrow margin (often hovering between 1.2% and 1.5%). Because VOO focuses exclusively on large-cap US blue chips while VTI includes mid- and small-cap stocks, their dividend yields fluctuate interchangeably depending on market conditions, though neither is designed as a dedicated high-yield income fund.