U.S. stocks traded lower Thursday, with the Dow Jones index down more than 300 points, even as several companies posted sharp gains. Synopsys shares climbed 10.8% to $482.23 after the company issued fiscal-year 2027 financial guidance above estimates and outlined a multi-year financial framework through fiscal year 2030. Accenture rose 18.3% to $216.66 after reporting better-than-expected fourth-quarter results and issuing fiscal-year 2027 sales guidance above estimates. Enerflex gained 15.5% to $26.32 after announcing a contract award for large-scale data center development. Capital Clean Energy Carriers rose 15.3% to $21.60, while Armada Acquisition Corp II advanced 14.5% to $18.78. Vicor climbed 11.4% to $321.99 after raising its third-quarter sequential revenue-growth guidance. Everforth gained 11% to $36.55, USA TODAY rose 9.9% to $6.92, Fair Isaac surged 9.7% to $650, Coherent advanced 9.1% to $314, and Concentrix rose 9.1% to $27.22 despite mixed third-quarter results, weak current-quarter guidance, and lower fiscal-year 2026 sales guidance. Lumentum Holdings, Huron Consulting Group and the other listed companies also recorded gains.