Shares of Norwegian Cruise Line Holdings Ltd. NCLH, -2.48% pulled back 0.8% in premarket trading, roughly in line with the stocks of the cruise operator's peers, after a federal judge sided with Norwegian in its fight Florida's rule that businesses can't require proof of COVID-19 vaccination. The stock's slip comes after it shot up 10.1% over the past two days, with the company reporting on Friday a narrower-than-expected second-quarter loss, even as revenue missed. The company had said in its post-earnings conference call with analysts on Friday that 35% to 36% of its fleet is set to sail out of Florida in the next six months, and Chief Executive Frank Del Rio said the company's policy of 100% vaccinations is in place "without issue" in the nearly 500 ports its cruise ships sale to and from around the world. Among Norwegian's peers, shares of Royal Caribbean Group RCL, -2.26% fell 0.7% ahead of the open and Carnival Corp. CCL, -2.39% shed 0.8%, while futures ES00, -0.16% for the S&P 500 SPX, -0.14% declined 0.1%.