Williams Cos. rallies on bid news; Fitbit keeps climbing By: MarketWatch June 22, 2015 at 06:40 AM EDT Williams Cos., Cigna, Fitbit and Apple are among the stocks to watch on Monday. Read More >> Related Stocks: Aetna Anthem Inc Apple Cigna Corp Energy Transfer Equity LP Fitbit Inc GX MSCI Greece ETF Humana Williams Companies