Once the darlings of Wall Street, for-profit education companies have seen their market value plunge to the lowest level in 52 weeks, leaving investors to wonder if the industry would be able to survive in its current form. An index of nine for-profit education companies, the S&P 1500 Education Services Index is down nearly 30 percent for the year.
Stocks may continue to retest January's lows Friday, as traders await January retail sales and consumer sentiment.
Check out the companies making headlines after the bell Thursday: CBS, Pandora, Twitter, FireEye and more.
There are several signs we are seeing somewhat more aggressive buyback announcements than usual.
Global markets are just plain scared but perhaps the biggest fear is the world's central banks are no longer able to rescue them.
Patti Domm is CNBC Executive Editor, News, responsible for news coverage of the markets and economy.
A CNBC reporter since 1990, Bob Pisani covers Wall Street from the floor of the New York Stock Exchange.
Senior Producer - Breaking News
Dominic Chu is a markets reporter for CNBC.
Evelyn Cheng is a markets writer for CNBC.
Sara Eisen is a correspondent for CNBC, focusing on currencies and the global consumer.