The stock has plunged 91 percent during the last 12 months.

By the end of the day, the stock had plunged 17 percent.

But the stock plunged to a low of $6.50 in 1998.

Its stock, once worth $34 a share, plunged to less than $5.

The stock plunged 23 percent that day, by more than $7 a share, to $24.75.

The stocks have plunged from a year high of nearly $72.

Nothing like that happened yesterday, however, as the stock plunged.

The company's stock has plunged 43 percent this year, cutting its market value by more than $50 billion.

The stock plunged roughly 50 percent in less than a month.

The company's stock plunged below $1 a share, where it has remained.