United Airlines Holdings Inc (NASDAQ:UAL) stock is trading at more than four-year highs after earnings, up 7.4% at $68.77 at last check. The airline giant beat third-quarter earnings and revenue estimates, and announced a $1.5 billion stock buyback program -- its first since pre-pandemic trading. Unsurprisingly, options traders are all over UAL after the results. Already today, more than 72,000 calls and 52,000 puts have been traded, which is 13 times the average intraday volume. The October 72 call is seei ...