JPMorgan analyst Joseph Greff recently surveyed August pricing for cruise itineraries marketed in the U.S. for select Carnival (CCL), Royal Caribbean (RCL) and Norwegian Cruise Line (NCLH) brands. On a global basis, forward gross ticket prices remained strong for Royal and Norwegian, while Carnival prices rebounded sequentially, though continue to underperform, Greff tells investors in a research note. According to the survey, on a forward 12-month basis, average prices for Carnival brands Carnival, Princess, and Holland America were up 1.0%, down 4.9%, and down 1.2%, respectively. Royal brands Royal Caribbean and Celebrity were up 14% and up 8.9%, and Norwegian was up 6.8% year-over-year. In general, cruise demand and pricing momentum continue, Greff contends. The analyst likes shares of Royal Caribbean and Norwegian Cruise Line.