Share of air carriers traded broadly higher Monday, amid growing optimism that the latest surge in COVID-19 cases to record daily levels won't lead to widespread shutdowns given the omicron variant appears less severe and as more people are vaccinated. The U.S. Global Jets ETF JETS, +2.92% rallied 2.8% in afternoon trading, to outperform the S&P 500's SPX, +0.40% 0.4% gain by a wide margin.