$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 (2015-11-24), losing -16.07%. The number of shares that
changed hands was 3,382,995, or about 12 times the average daily volume in
the stock.
The closing price was $27.05, amounting to a market cap of $1,680,000,000,
about -45.08% 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.