As U.S. indexes are testing highs, retail investors are jumping back into the risky world of penny stocks faster than ever.
Shortly after the market opened Wednesday, Knight Capital sent a message to its clients as trading started to get wacky.
CNBC's Mary Thompson reports the Commodity Futures Trading Commission's vote today will have a big impact on the OTC derivatives market.
Shares of AMR Corporation—the bankrupt parent company of American Airlines—are soaring today, as the embattled company makes its debut on the over-the-counter market.
Two China stocks created through reverse mergers — RINO International and Puda Coal — got hit today: One by the SEC and the other by the company, itself.