Stocks were choppy in the lead-up to today's Federal Reserve policy announcement. While the main indexes made a confident move higher after the central bank cut rates by a half-percentage point, a late-day burst of selling pressure sent them into the red at the close.

SolarEdge Technologies is down 5% after shares of the solar-power-equipment maker were downgraded to Underperform from Hold at Jefferies and the price target cut to $17 from $27. S&P 500 futures are up 0.3%. Dow Jones Industrial Average futures are adding 0.2%.