Author Gautam Mukunda talks headwinds facing Starbucks CNBC TelevisionStocks making the biggest premarket moves: Berkshire Hathaway, Paramount, Spirit Air, Victoria’s Secret and more CNBCStarbucks must revamp store experience to boost sales: Howard Schultz USA TODAYGreat News for Nio Stock Investors Yahoo FinanceStarbucks sales are slumping. Is it a bellwether for the economy? ABC News