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

Celldex Therapeutics, Inc. (symbol: CLDX) was one of the worst losers of
the trading day today (2015-08-20), losing -10.73%. The number of shares
that changed hands was 2,688,418, or about 2 times the average daily volume
in the stock.
The closing price was $13.48, amounting to a market cap of $1,330,000,000,
about -58.93% off the highest price in the last 12 months. The stock has
been trading at a range between $12.11 and $32.82.
CLDX is in the Biotechnology: In Vitro & In Vivo Diagnostic Substances
industry, part of the Health Care sector.