Take a look at some of Wednesday's midday movers:
All 10 S&P 500 large-cap sectors were lower at midday. Defensive sectors were hardest hit including utilities and consumer staples such as tobacco stocks.
Ten-year U.S. interest rates rose amid uncertainty about how long the Fed stimulus program can continue. The economic uncertainly around the Fed tapering weighed on cyclical names such as U.S. Steel and Cliffs Natural Resources, sending those stocks lower.