U.S. stocks were mixed in a quiet session Thursday as rising hopes about more stimulus in Europe were tempered by a continuing decline in oil prices.

One of the biggest events in healthcare annually, the American Society of Hematology’s annual meeting (56th!) begins on December 6, but abstracts from the conference will be released this morning. Here's a primer on the stocks to watch.

Stocks wavered around the unchanged mark in afternoon trade Monday, as investors paused following the biggest weekly gains for major indexes in more than a year.

Epizyme Inc., which creates therapeutics for patients with genetically defined cancers, is making a breakthrough with its technology. Biotech investors should keep a keen eye on this company.