📝 Executive Summary
CoStar Group (CSGP) reported an 18.44% revenue growth in Q2 2026, marking a second straight quarter of deceleration from its Q4 2025 peak. While management raised adjusted EBITDA guidance by $30 million, net new bookings fell 26% year-over-year, prompting investor scrutiny over whether the slowdown is a strategic trade-off for margins or a sign of underlying demand softness.