JPMorgan analyst Brandt Montour noted that Carnival (CCL) and Royal Caribbean (RCL) shares are down about 16%-17% since the coronavirus outbreak, while Norwegian Cruise Line (NCLH) is down about 10%, although they are trading 1%-3% above post-virus lows. He sees signs that sentiment in cruise shares is bottoming and would be a buyer of the stocks at current levels, Montour said, adding that he "would rather be too early with this call than too late" given how quickly the cruise sector can normalize. While shares in the group are likely to stay volatile in the near-term, he believes the risk/reward is to the upside at this point, concluded Montour.