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

Nektar Therapeutics (symbol: NKTR) was one of the worst losers of the
trading day today (2016-10-18), losing -10.15%. The number of shares that
changed hands was 3,521,651, or about 3 times the average daily volume in
the stock.
The closing price was $14.08, amounting to a market cap of $1,930,000,000,
about -29.53% off the highest price in the last 12 months. The stock has
been trading at a range between $10.52 and $19.98.
NKTR is in the Major Pharmaceuticals industry, part of the Health Care
sector.