Fitbit, Twitter raise questions for investors By: MarketWatch November 24, 2015 at 20:39 PM EST Each company is having a few issues at the moment, and as with all things, your response as a shareholder must be tailored to each individual company. Read More >> Related Stocks: Alphabet-C Amazon.com Apple Facebook Fitbit Inc Pandora Media Inc Twitter, Inc. Valeant Pharmaceuticals International, Inc.