The main U.S. stock indices were mostly up on Monday, with only the Dow Jones, which declined 0.25 percent. The S&P 500 added 0.18%, the NASDAQ added 0,74%. Players are demonstrating mixed sentiment ahead of the Federal Reserve meeting, which begins today. This meeting is the key event of the week attention of market participants. The meeting will be traditionally held for two days, during which the regulator will discuss the latest developments in the Federal Reserve's debt crisis. The meeting will traditionally last for two days, during which the regulator will discuss further plans for the key interest rate.  In addition, it may consider reducing active financial stimulation of the American economy, Carsten Fritsch, an analyst at Commerzbank told The Wall Street Journal. Last Friday, the indices ended trading with a slight increase, influenced by The indices ended trading last Friday with a slight uptick, influenced by positive economic data from the University of Michigan. University of Michigan's consumer sentiment index in June, according to preliminary data beat expectations, coming in at 86.4 points.