Group 1 - CoStar Group (NASDAQ:CSGP) is recognized as one of the top 10 real estate services stocks to buy according to hedge funds [1] - Jake Fuller from BTIG upgraded CoStar Group's rating from Neutral to Buy, with a target price of $80, indicating a potential upside of nearly 57% [1] - Faiza Alwy from Deutsche Bank maintained a Buy rating on CoStar Group, lowering her price target from $85 to $68, which still suggests an upside potential of over 33% [3] Group 2 - Alwy highlighted that negative market sentiment was driven by the company's revised outlook for 2026, which included a new $1.5 billion share buyback authorization [4] - The outlook indicates a projected decline of 4% in commercial margins due to fixed costs associated with shared resources [4] - CoStar Group provides commercial real estate analytics and operates various platforms, including CoStar Property, CoStar Markets, and LoopNet, serving multiple property types [5]