You can hardly blame companies for pushing their own stock.

"It's easy to push stocks around this week because a lot of people are out," he said.

Hopes of a recovery have pushed the company's stock up by 60 percent this year.

The announcement pushed the company's stock to its highest point in more than six years.

This, in turn, pushed stocks down for most of the session.

Yet on the first day of trading, investors go wild, pushing the company's stock up 60 percent.

As other managed care companies reported good results, investors pushed Oxford's stock up almost 16 percent this the week.

These trends, however, may have pushed cellular stocks down too far.

Such talk pushed Pennzoil's stock up $4.125, to $85.125, by the end of the week.

One of the forces pushing stocks higher is pension funds, some analysts said.