Costar Group (CSGP), a provider of data and analytics services to the commercial real estate industry, has been climbing back up the rankings in the SIA S&P 500 Index Report since April. Earlier this month, they returned to the Green Favored Zone and are up 10.0% since then. Yesterday, Costar finished in 75th place, up 10 spots on the day and up 84 positions in the last month.