On a day when the benchmark S&P 500 index hit a record high, Carnival Corporation's NYSE: CCL popping 7% to its highest level in more than 2 years says a lot. As one of the hardest hit industries during the COVID pandemic, cruise lines have been closely watched in recent years to see if they can get back to pre-pandemic levels. So far, though they've managed some solid runs, this has proved an elusive goal, but there's an argument to be made that some cruise stocks, and Carnival in particular, have never lo ...