Investors cautious as inflation report looms and rate hikes predicted.

US stocks remain muted as investors await the release of a key inflation report this week, which could set the tone for next month's policy meeting at the Federal Reserve. The Fed is expected to raise rates again, with the possibility of two more rate increases this year. Market sentiment is also being clouded by geopolitical turmoil after an attempted revolt by Russian paramilitary operatives, which marched on Moscow over the weekend only to abruptly call off their advance. Shares of Pfizer fell 4% after it said it would stop developing an experimental obesity and diabetes drug because of elevated liver enzymes found in some patients in its studies. Carnival Corporation shares fell 7% after the cruise operator lowered its annual loss forecast.