Walt Disney Co DIS.N jumped 6.3% after beating revenue and profit estimates, while Mattel Inc MAT.O surged 7.5% after forecasting full-year profit above estimates. By Bansari Mayur Kamdar Feb 10 (Reuters) - Wall Street's main indexes were set to open sharply lower on Thursday after stronger-than-expected consumer prices data raised concerns that the Federal Reserve will act aggressively to counter inflation. The figures from the Labor Department showed that consumer prices leapt 7.5% in January on a year-over-year basis, topping economists' estimate of 7.3%, and leading to the biggest annual increase in inflation in 40 years.