The Philadelphia Fed said its manufacturing index soared in February to a 33-year high, in another indication of improving business sentiment in the wake of a Republican election sweep. The Philadelphia Fed index surged to a reading of 43.3 from 23.6 in January. That’s the highest level since early 1984, on a scale where any reading above zero indicates improving conditions. That is well above the MarketWatch economic consensus was for a reading of 20. It was also the biggest one-month gain in the index since June 2009.