Benzinga's PreMarket Info Recap for August 21, 2013: Markets Selling Off A Bit, Bounce Back From Lows

Have you ever woken up to find that a stock in your portfolio made a dramatic move overnight? Are you interested in learning how to understand each day's post-market and pre-market moves? Veteran traders Joel Elconin and Dennis Dick will give you all of the insights that you'll need to get in on the action before the opening bell. Some highlights:

• Exxon Mobil XOM trades green the entire day, but in the last few minutes gives back the gains and close red for the 20th time in the last 21 sessions
• Earnings from Lowe's LOW, Target TGT, Toll Brothers TOL and American Eagle AEO
• HSBC downgrades fertilizer stocks Potash POT, Mosaic MOS and Agrium AGU

Check out the video below for a recap of Wednesday's market action: