Fidelity Investments is launching six exchange-traded funds, each focusing on a specific “factor” that drives risk or return. The new factor—or strategic-beta—ETFs are the latest entrants in a growing category of so-called smarter ETFs. They seek to improve on a benchmark—to achieve better performance or manage risk, for example—by tilting toward one or more factors, such as value, momentum or low volatility. The Fidelity Core Dividend ETF, Dividend ETF for Rising Rates, Low Volatility Factor ETF, Momentum Factor ETF, Quality Factor ETF, and Value Factor ETF will begin trading Sept. 15. Read the original story from The Wall Street Journal.