Companies whose shares are expected to trade actively in today’s session are Herbalife Ltd. (NYSE:HLF), Rockwell Medical Inc (NASDAQ:RMTI), Brown & Brown, Inc. (NYSE:BRO), Acme Packet, Inc. (NASDAQ:APKT), NII Holdings, Inc. (NASDAQ:NIHD) and The Wet Seal, Inc. (NASDAQ:WTSLA).

stocks to watch

Herbalife Ltd. (NYSE:HLF): The nutritional supplement maker may face a Federal investigation. Responding to a Freedom on Information Law request filed by the NYPost, Federal Trade Commission said 192 complaints have been filed against the company in the past seven years. Herbalife Ltd. (NYSE:HLF) is battling to defend its business model as hedge fund manager, Bill Ackman, calls it a pyramid scheme. Shares were down 10.84 percent to $31.27 in early trading.

Rockwell Medical Inc (NASDAQ:RMTI): The company said its iron-delivery drug performed on the expected lines in the final stage of clinical trials. Shares surged 15 percent to $7.50 in early session.

Brown & Brown, Inc. (NYSE:BRO): The insurance agency and brokerage firm reported a 17 percent increase in its quarterly profits due to improvement in commission and fees, beating Wall Street estimates. Brown & Brown also reported 5.4 percent organic growth in the fourth quarter. Shares were up 5.75 percent to $29.07 in early market trading.

Acme Packet, Inc. (NASDAQ:APKT): Oracle Corporation (NASDAQ:ORCL) is acquiring Acme Packet for $1.98 billion cash. The software giant said the acquisition will help boost the deployment of all-IP networks. Oracle is offering $29.25 per Acme share, a 22 percent premium over its closing price on Friday. Acme Packet, Inc. (NASDAQ:APKT) shares went up 22.86 percent to $29.46 in early trading.

NII Holdings, Inc. (NASDAQ:NIHD): Standard & Poor’s has further downgraded the wireless carrier by one notch to speculative category. The credit rating agency said NII’s credit measures have deteriorated due to delay in implementing 3G networks in its key markets.

The Wet Seal, Inc. (NASDAQ:WTSLA): The teen-clothing retailer unveiled a number of cost-reduction measures. Wet Seal said it will also eliminate the position of chief operating officer. The company expects to save about $5.5 million through these efforts this year. Shares were up 1.08 percent to $2.80 in early trading.