Take a look at some of Wednesday morning’s early movers:

Worried oil could turn from a tailwind to a headwind, traders are watching to see if the Dow can once again crack and hold the 13,000 mark.

Rising tensions around Iran’s nuclear program, coupled with prospects for a better global economy, carried oil prices above $105 Tuesday for the first time since May. Analysts say oil could continue to rise, but how much depends on a variety of factors, including whether the sanctions against Iran result in supply shortages, which are as yet not a concern.