Coinspeaker Big 4 U.S. Airlines Stocks Jumped but Started to Fall as They Confirm Government BailoutsShares of the ‘Big 4’ U.S. airlines surged in pre-market trading on Wednesday after they accepted the government coronavirus bailout. United Airlines, American Airlines, Delta Air Lines, Southwest Airlines stocks have all risen by average 10% but are falling now.Big 4 U.S. Airlines Stocks Jumped but Started to Fall as They Confirm Government Bailouts