CoStar Group is trading at $27.57 (4.2% down) in pre-market, extending recent weakness after hitting new 52-week lows. - The decline follows an analyst downgrade by Baird, which lowered its rating to Neutral from Outperform and cut its price target, citing reduced confidence due to the CFO departure and an un-reiterated guidance. - The company announced a CFO transition on July 13, 2026, appointing Robin Rossmann effective July 31, 2026, to succeed Christian Lown. - The stock has been under pressure amid mixed sentiment following Q1 2026 results and ongoing strategic moves, including recent acquisitions.