In the last two weeks, many of them have cut their ratings on the stock.

Some analysts cut their rating of the stock on the news.

The company's stock fell 19 percent the next day as a half-dozen investment banks cut their ratings.

The agency has already cut Spain's rating twice since September to the same level.

That prompted the broker to cut its rating to "underperform".

In response to the lower tax revenues, debt-ratings agencies have cut their ratings for a number of state and local government securities.

With remarkable synchronicity, 6 of the 35 analysts who follow Amazon cut their ratings on the stock the next morning.

Shares in Taser fell more than 11 percent as one analyst cut his rating and sales forecast for the company.

Merrill Lynch cut its rating on the stock, and several analysts warned bargain hunters to stay away.

The credit ratings agency cut its rating on Ireland's sovereign debt to one notch above junk last week.