A low-volatility straggler gets an upgrade as defensive sectors look more attractive By: MarketWatch May 04, 2020 at 10:26 AM EDT The defensive weighting of the Invesco S&P 500 Low Volatility ETF makes it a winner, CFRA says. Read More >> Related Stocks: S&P 500 Low Vol Invesco ETF USA Min Vol Ishares Edge MSCI ETF