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

MannKind Corporation (symbol: MNKD) was one of the worst losers of the
trading day today (2015-11-23), losing -8.91%. The number of shares that
changed hands was 5,689,847, or about 1 times the average daily volume in
the stock.
The closing price was $2.25, amounting to a market cap of $920,840,000,
about -71.45% off the highest price in the last 12 months. The stock has
been trading at a range between $1.76 and $7.88.
MNKD is in the Major Pharmaceuticals industry, part of the Health Care
sector. It first went public in 2004.