Shares of Carnival Corp. CCL, +13.50% soared 13.7% in afternoon trading, to bounce off the previous session’s 30-year closing low, and enough to be the S&P 500’s SPX, +2.88% third-biggest gainer. The two bigger gainers were fellow cruise operators, as shares of Royal Caribbean Group RCL, +15.35% ran up 15.4% and Norwegian Cruise Line Holdings Ltd. NCLH, +16.67% hiked up 16.8%. Carnival’s stock, which was headed for the biggest one-day gain since the record 39.3% gain on Nov. 9, 2020, had closed Monday at the lowest price since Oct. 15, 1992, in the wake of a hugely disappointing earnings report. The rally in the cruise stocks comes as the S&P 500 surged 2.9%, after rallying 2.6% on Monday, after closing at a 23-month low on Friday.