US stock futures edged up on Thursday as bets on interest-rate cuts rose after President Trump hinted he was looking at replacing Federal Reserve Chair Jerome Powell earlier than expected. Dow Jones Industrial Average futures (YM=F) nudged 0.2% higher, while S&P 500 futures (ES=F) rose about 0.2%. Contracts on the tech-heavy Nasdaq 100 (NQ=F) gained 0.4%. Trump's frustration with Powell's "wait and see" approach to interest rates has led him to consider announcing his pick to succeed the Fed chair in September or October, The Wall Street Journal reported. Powell's...