S&P 500 Movers: ACN, WDC

S&P 500 trading was characterized by sharp stock-specific moves in early Thursday trading. Western Digital led the index, rising 11.9% and extending its strong year-to-date gain to 362.6%. On the downside, Accenture was the worst performer in the S&P 500, falling 15.2% and remaining down 50.7% for the year. Cognizant Technology Solutions also weakened, down 8.2%, while Intel rallied 11.4%. The article is a brief market-movers snapshot rather than a catalyst-driven news story, highlighting volatility and relative performance among major S&P 500 constituents.