United, JetBlue stocks get downgrades from JPMorgan By: MarketWatch December 16, 2020 at 12:53 PM EST United, JetBlue and Spirit shares get a downgrade to sell from JPMorgan, which advises investors to take profits. Read More >> Related Stocks: Alaska Air Group American Airlines Gp Delta Air Lines Jetblue Airways Corp Southwest Airlines Spirit Airlines Inc US Global Jets ETF United Airlines Holdings Inc