United Airlines Holdings Inc UAL stock is in the green, rallying on strong chart signals ahead of its second quarter earnings report after market close Wednesday.Bullish Technicals Set The Stage For A BreakoutChart created using Benzinga ProShares are trading around $87.41, comfortably above their eight-, 20-, 50-, and 200-day simple moving averages, a classic bullish indicator that suggests the trend is favorable, despite selling pressure indicating caution ahead.The Relative Strength Index (RSI) is at 59. ...