MYSTIC, Connecticut (October 10, 2023) -- Hilton (NYSE: HLT) today celebrated the grand opening of Spark by Hilton Mystic Groton, solidifying the company’s foray into the premium economy segment. With more than 400 opportunities in various stages of development, the first-ever Spark by Hilton made its debut just eight months after Hilton announced the new, conversion-only brand in January of this year.