Baron Capital, an investment management company, released its Q2 2026 investor letter for the "Baron Opportunity Fund". During the second quarter, the Baron Opportunity Fund increased 27.07% (Institutional Shares), outperforming both the Russell 3000 Growth Index (17.05%) and the S&P 500 Index (15.20%). In its Q2 2026 investor letter, Baron Opportunity Fund highlighted CoStar Group, Inc. (NASDAQ:CSGP). On August 11, 2026, CoStar Group, Inc. (NASDAQ:CSGP) closed at $31.12 per share, reflecting a market capitalization of $12.61 billion. Baron Opportunity Fund stated the following regarding CoStar Group, Inc. (NASDAQ:CSGP) in its Q2 2026 investor letter: