there must be a reason, its not just one trade, its a whole bunch
Cummins..The heavy-equipment manufacturer lowered its full-year 2012 revenue guidance, sending shares sharply lower in extended-hours trading. In addition, the company said it plans to cut 1,000 to 1,500 employees by the end of the year.
Could also be an over reaction selling.check out cat,they also are down $ 1.11 at this time after hours.
It could be this.Go to "google finance" and type in "joy" and you will get the following headline,"coal county incensed at what it sees as obama overreach on coal.
As of right now 9:29 after hours,it is listed at $ 57.34 ,not much difference from regular trading hrs.Which I would determine,some were just selling out.So far it looks good again.