Companies whose stocks are expected to trade actively in today’s session are Epocrates, Inc. (NASDAQ:EPOC), VIVUS, Inc. (NASDAQ:VVUS), Nationstar Mortgage Holdings Inc (NYSE:NSM), Harmony Gold Mining Co. (NYSE:HMY), Commercial Metals Company (NYSE:CMC) and Bank of America Corp (NYSE:BAC).

stocks to watch

Epocrates, Inc. (NASDAQ:EPOC): The electronic health record and mobile drug reference tool provider is being acquired by Athenahealth Inc (NASDAQ:ATHN) in a $293 million cash deal. Athenahealth Inc (NASDAQ:ATHN) is looking for ways to expand its network of providers. Epocrates shares were up 22.56 percent to $11.79 in early trading.

VIVUS, Inc. (NASDAQ:VVUS): Shares of the biopharmaceutical company surged 9.31 percent to $15.06, after it announced that the number of prescriptions for its Qsymia drug for obesity increased from 7,749 in November to 12,978 in the four weeks of December. Initially, investors were concerned over the drug’s slow start, but an impressive 67 percent monthly jump has eased concerns.

Nationstar Mortgage Holdings Inc (NYSE:NSM): The company has successfully negotiated a $1.3 billion deal to purchase about $215 billion worth of residential mortgage servicing rights from the Bank of America (NYSE:BAC). With this agreement, Nationstar has doubled its customer base. Shares were up 14.50 percent to $38 in early market trading.

Harmony Gold Mining Co. (NYSE:HMY): The South African gold producer is witnessing a number of violent strikes by its employees. Harmony has suspended operations at one of its mines for an additional two months due to strikes. The company also warned that it may permanently shut down the site if labor unrest continues.

mmercial Metals Company (NYSE:CMC): The producer of steel and metal products is expected to announce its first quarter earnings. Analysts expect a revenue of $1.9 billion with 17 cents a share in earnings. Shares were up 3.47 percent to $16.04.

Bank of America Corp (NYSE:BAC): The bank has agreed to pay $10.35 billion to mortgage finance firm Federal National Mortgage Association (OTC:FNMA), to settle the mortgage claims related to the loans it sold to Fannie Mae in 2008. Shares were up 0.70 percent to $12.23.