Brown Advisory<\/strong>, an investment management company, released its \u201cBrown Advisory Mid-Cap Growth Strategy\u201d fourth-quarter 2025 investor letter.\u00a0A copy of the letter can be downloaded here. The Strategy lagged the Russell Midcap\u00ae Growth Index in the fourth quarter due to stock selection. The performance was in line with expectations for the full year. The firm believes that the Strategy underperformed in 2025 because it did not own Palantir Technologies Inc (PLTR). The Strategy focuses on achieving solid risk-adjusted returns by investing in high-quality compounders with fair valuations and market capitalizations between $2 billion and $50 billion at the time of purchase. Please review the Strategy\u2019s top five holdings to gain insights into their key selections for 2025.<\/p>\n In its fourth-quarter 2025 investor letter, Brown Advisory Mid-Cap Growth Strategy highlighted stocks like CoStar Group, Inc. (NASDAQ:CSGP). CoStar Group, Inc. (NASDAQ:CSGP) is an information, analytics, and online marketplace services provider for commercial and residential property markets. On March 23, 2026, CoStar Group, Inc. (NASDAQ:CSGP) stock closed at $42.91 per share. One-month return of CoStar Group, Inc. (NASDAQ:CSGP) was -12.70%, and its shares lost 46.52% of their value over the last three months. CoStar Group, Inc. (NASDAQ:CSGP) has a market capitalization of $18.01 billion.<\/p>\n Brown Advisory Mid-Cap Growth Strategy stated the following regarding CoStar Group, Inc. (NASDAQ:CSGP) in its fourth quarter 2025 investor letter:<\/p>\n “CoStar Group, Inc.<\/strong> (NASDAQ:CSGP): Operates as commercial and residential real estate information, analytics and online marketplace platform. The market grew increasingly impatient with CoStar Group\u2019s (CSGP) heavy investment in its residential portal, particularly as concerns grow around AI agents potentially disintermediating traditional advertising models. Early 2026 represents a key inflection point, when the company\u2019s standstill agreement with activist investors expires.”<\/p>\n<\/blockquote>\n CoStar Group, Inc. (NASDAQ:CSGP) is not on our list of\u00a040 Most Popular Stocks Among Hedge Funds Heading Into 2026. According to our database, 58 hedge fund portfolios held CoStar Group, Inc. (NASDAQ:CSGP) at the end of the fourth quarter, up from 57 in the previous quarter. While we acknowledge the potential of CoStar Group, Inc. (NASDAQ:CSGP) as an investment, we believe certain AI stocks offer greater upside potential and carry less downside risk. If you’re looking for an extremely undervalued AI stock that also stands to benefit significantly from Trump-era tariffs and the onshoring trend, see our free report on the best short-term AI stock<\/strong>.<\/p>\n<\/p><\/div>\n\n
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