Key TakeawaysNorwegian Cruise Line Holdings shares rose Tuesday after it received an upgrade and price-target boost from Mizuho Securities as it cuts costs and the industry's outlook improves.Mizuho lifted its rating to "buy" from "neutral," and the price target to $24 from $21.Mizuho executive director Ben Chaiken said the cruise company has streamlined operations and is benefiting from high demand and limited supply. Shares of Norwegian Cruise Line Holdings (NCLH) advanced in intraday trading Tuesday as M ...