Nasdaq Inc NDAQ.O slid 7.5% after the exchange operator said it would buy Thoma Bravo-owned software firm Adenza for $10.5 billion. ET (1136 GMT June 12 (Reuters) - U.S. stock index futures rose on Monday, setting Wall Street up for a fresh round of gains, while investors awaited inflation data and the Federal Reserve's interest rate decision this week. Since last week, the rally has broadened beyond megacaps to include more economically sensitive sectors such as energy, industrial and small-cap stocks as data continues to show a resilient U.S. economy despite higher interest rates.