Shares of Navistar (NYSE:NAV) could be in for a wild ride today with an operational update from...

Shares of Navistar (NYSE:NAV) could be in for a wild ride today with an operational update from the company planned for 9:00 AM EST. Analysts don't have a firm handle on what the company is planning to announce, but tip off that deals with either Cummins (NYSE:CMI) or Oshkosk (NYSE:OSK) could be in the mix. (webcast)