Walt Disney Co DIS.N jumped 5.4% after beating revenue and profit estimates, while Mattel Inc MAT.O surged 9.7% after forecasting full-year profit above estimates. By Bansari Mayur Kamdar Feb 10 (Reuters) - U.S. stocks fell on Thursday, with Big Tech leading the declines after stronger-than-expected consumer prices data raised fears the Federal Reserve will act aggressively to counter inflation. The Labor Department data showed consumer prices leapt 7.5% in January on a year-over-year basis, topping economists' estimates of 7.3%, leading to the biggest annual increase in inflation in 40 years.