$ADRO is one of biggest losers #stocks today. read more:

Aduro Biotech, Inc. (symbol: ADRO) was one of the worst losers of the
trading day today (2016-01-22), losing -6.17%. The number of shares that
changed hands was 497,357, or about 1 times the average daily volume in the
stock.
The closing price was $18.39, amounting to a market cap of $1,160,000,000,
about -62.66% off the highest price in the last 12 months. The stock has
been trading at a range between $16.28 and $49.25.
ADRO is in the Major Pharmaceuticals industry, part of the Health Care
sector. It first went public in 2015.