Volatility can be tough to navigate for investors, but it can also make for a stock-picker's dream. The Iran-war-fueled swings have rippled through the stock market for months, but rather than waiting for things to calm down, the "smart money" has been diligently sorting winners and losers, Morningstar said. The investment research firm surveyed the portfolios of top large-cap fund managers that held 50 or fewer stocks in their portfolios, and analyzed how those portfolios had changed over the