Shares of cruise-line operators charged higher Thursday as the Centers for Disease Control and Prevention said cruise ships might sail as soon as the summer. But with cruise stocks held so diffusely among various exchange-traded funds, few participated in the rally. Carnival Corporation shares were 2% higher, Royal Caribbean Group shares rose 1.2%, and Norwegian Cruise Line Holdings Ltd. jumped 3.6% midmorning. The ETF that may have one of the largest allocations to the sector, the AdvisorShares Hotel ETF , at 9.3%, gained 0.3%, as did the Invesco S&P 500 Equal Weight Consumer Disrectionary ETF , which has the largest single allocation to Norwegian shares, according to FactSet data. Most other travel-specific ETFs focus on the booking infrastructure, like the ETFMG Travel Tech ETF or airlines, like the U.S. Global Jets ETF .

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