Core Insights - Brown Advisory's Large-Cap Growth Strategy reported a net return of -0.88% in Q3 2025, underperforming the Russell 1000 Growth Index due to underweighting speculative momentum-driven stocks despite significant exposure to AI [1] Company Performance - CoStar Group, Inc. (NASDAQ:CSGP) had a one-month return of 2.46% but experienced a 10.40% decline over the past 52 weeks, closing at $69.02 per share with a market capitalization of $29.25 billion on December 03, 2025 [2] - CoStar Group, Inc. achieved revenue of $834 million in Q3 2025, reflecting a 20% year-over-year increase [4] Sector Analysis - Stock selection within the Real Estate sector positively impacted relative performance, with strong results from CoStar Group, Inc. contributing to an 18% stock gain in July due to renewed momentum in its residential and commercial platforms [3] Investment Sentiment - CoStar Group, Inc. was held by 57 hedge fund portfolios at the end of Q3 2025, a slight decrease from 59 in the previous quarter, indicating a stable interest among hedge funds [4] - While CoStar Group, Inc. shows potential, certain AI stocks are viewed as having greater upside potential and lower downside risk [4]