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

Exact Sciences Corporation (symbol: EXAS) was one of the worst losers of
the trading day today (2016-02-24), losing -8.42%. The number of shares
that changed hands was 5,769,209, or about 3 times the average daily volume
in the stock.
The closing price was $5.87, amounting to a market cap of $565,500,000,
about -82.13% off the highest price in the last 12 months. The stock has
been trading at a range between $5.37 and $32.85.
EXAS is in the Biotechnology: Commercial Physical & Biological Resarch
industry, part of the Health Care sector. It first went public in 2001.