Key Takeaways Lennar is down 20.6% in 2025 as incentives hurt margins, but its tech-driven model targets efficiency gains.Marvell has fallen 23.8% amid delayed customer spending despite key exposure to AI and cloud infrastructure.Snap is down 29.2% as ad growth slowed, but AI features and a $400M Perplexity deal aim to diversify revenue.Market leadership in any given year often leaves a long list of laggards behind. In 2025, several well-known stocks have fallen more than 20% year to date as investors punis ...