Volatility continues to grip markets, leading to all indices but the RUT to close down yet again. Apple (AAPL) was the Mag 7's biggest laggard off a report that the company will overhaul its software for most of its major hardware. Delta Airlines (DAL) sold off over guidance woes while Southwest Airlines (LUV) soared with company changes. Kohl's (KSS) tapped historic lows after slashing its guidance and cutting its dividend. Caroline Woods takes a closer look into the biggest market moves.