What is the sentiment of the input news from financial perspective?
Options: negative, positive

Gogo, Inc GOGO, Lululemon Athletica, Inc LULU and Twitter, Inc TWTR have all formed bullish engulfing candlestick patterns on their daily charts. A bullish engulfing candlestick pattern forms when a small red candlestick is followed by a large green candlestick that has a body that completely engulfs the body of the previous day's candlestick.
positive