Trade Desk stock dropped 68% in 2025: Why was it the top S&P 500 laggard?

Core Insights - The Trade Desk stock price experienced a significant decline of 68% in 2025, marking it as the worst performer in the S&P 500 Index [1] - The company's market capitalization plummeted from $70 billion in January to a much lower figure, indicating a severe loss in investor confidence and market value [1]