A 0.2% decline in shares of drugmaker Merck & Co MRK.N ahead of its quarterly report weighed on Dow futures. Futures: Nasdaq up 1.44%, S&P up 0.50%, Dow down 0.13%, Feb 2 (Reuters) - Nasdaq futures jumped on Thursday as Meta Platforms surged after announcing rigorous cost controls, while a dovish message from Federal Reserve Chair Jerome Powell boosted bets of a softer landing for the U.S. economy. Wall Street's main indexes got a boost in the previous session from Powell acknowledging that inflation was starting to ease after the U.S. central bank raised rates by 25 basis points.