The U.S. cruise industry is riding high as shares ofRoyal Caribbean Cruises Ltd.(NYSE:RCL),Norwegian Cruise Line Holdings Ltd.(NYSE:NCLH), andCarnival Corp.(NYSE:CCL) rank among the S&P 500's top 15 performers in October.

As Royal Caribbean and Norwegian prepare to report earnings this week, investors are watching closely to see if strong booking trends and earnings beats can sustain the sector's momentum.

Strong October Performance For Cruise Stocks

Cruise line stocks have surged this month, benefitting from upward earnings revisions and renewed optimism around travel demand. Royal Caribbean and Norwegian shares have risen...