If their earnings don't meet expectations, there's a real risk of a big drop.
The stock dropped 6.7 percent after the company announced that earnings would not meet expectations, although it has since recovered.
Motorola said after the markets closed yesterday that its earnings met expectations.
Apple Computer today became the latest technology company to warn that its earnings would not meet earlier projections.
The earnings for the quarter met or slightly exceeded analysts' expectations.
Although earnings met analysts' forecasts, revenue growth was slower than many had expected.
And last month it announced that its second-quarter earnings would not meet analysts' expectations.
He added that the company's earnings had met analysts' expectations.
But other stocks fell after some warned that corporate earnings would not meet expectations.
For example, many investors are frustrated because they own a stock and the stock's earnings meet or perhaps even exceed expectations.