Shares of Norwegian were up 8.3% to $17.05 as of 12:54 p.m. ET Monday. Competitors Royal Caribbean (RCL) and Carnival (CCL) were up 4.9% and 6.7%, respectively. Norwegian Cruise Line Holdings (NCLH) was the best-performing stock in the S&P 500 Monday after the Miami-based cruise operator raised its full-year guidance amid strong demand. Norwegian on Monday raised its 2024 adjusted earnings per share (EPS) forecast to about $1.42 from $1.32. The company also upped its net yield forecast to approximately 7.2% ...