$DVAX is one of biggest winner #stocks today. read more:

Dynavax Technologies Corporation (symbol: DVAX) was one of the biggest
winners of the trading day today (2016-01-07), gaining 40.23%. The number
of shares that changed hands was 10,194,303, or about 18.5 times the
average daily volume in the stock.
The closing price was $29.7, amounting to a market cap of $1,140,000,000,
about -8.59% off the highest price in the last 12 months. The stock has
been trading at a range between $15.8 and $32.49.
DVAX is in the Major Pharmaceuticals industry, part of the Health Care
sector. It first went public in 2004.