BABA Blues: Shares of Alibaba stock were down marginally this afternoon on concerns about today's IPO lockup expiration. Alibaba Group Holding Ltd. (NYSE: BABA) saw more than 337 million additional shares float on the markets today. The markets surged after Fed Chairwoman Janet Yellen signaled that central bankers will not increase interest rates until the nation sees an improvement in its jobs picture and inflation begins to rise.