Invesco High Dividend Low Volatility ETF ( NYSEARCA:SPHD) generates its 4.71% yield - roughly three times the S&P 500's current dividend - by holding a concentrated portfolio of 50 U.S. stocks selected for high dividend yields and low volatility. With $3.1 billion in assets and a reasonable 0.30% expense ratio, SPHD takes an equal-weight approach to defensive sectors including utilities, REITs, healthcare, and consumer staples. The fund's income comes directly from dividends paid by underlying companies,