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

Genomic Health, Inc. (symbol: GHDX) was one of the worst losers of the
trading day today (2016-08-12), losing -6.38%. The number of shares that
changed hands was 249,820, or about 1 times the average daily volume in the
stock.
The closing price was $27.0, amounting to a market cap of $894,510,000,
about -24.56% off the highest price in the last 12 months. The stock has
been trading at a range between $20.05 and $35.79.
GHDX is in the Medical Specialities industry, part of the Health Care
sector. It first went public in 2005.