William Blair Downgrades Mister Car Wash (MCW) to Market Perform Feb 18, 2026

William Blair downgraded Mister Car Wash, Inc. (MCW) to Market Perform on February 18, 2026. The move changed William Blair’s prior Outperform stance and altered the MCW analyst rating landscape. We see this downgrade as a signal that near-term growth or margin drivers did not meet William Blair’s expectations. The downgrade was recorded at 10:31 AM and coincided with a small intraday price move. Investors should read the firm note and our analysis for context and next steps.