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

Mirati Therapeutics, Inc. (symbol: MRTX) was one of the worst losers of the
trading day today (2015-09-22), losing -14.46%. The number of shares that
changed hands was 924,611, or about 4 times the average daily volume in the
stock.
The closing price was $35.02, amounting to a market cap of $574,820,000,
about -32.65% off the highest price in the last 12 months. The stock has
been trading at a range between $13.69 and $52.0.
MRTX is in the Major Pharmaceuticals industry, part of the Health Care
sector.