$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 (2016-03-28), losing -22.75%. The number of shares that
changed hands was 12,754,182, or about 2 times the average daily volume in
the stock.
The closing price was $1.63, amounting to a market cap of $667,100,000,
about -77.73% off the highest price in the last 12 months. The stock has
been trading at a range between $0.64 and $7.32.
MNKD is in the Major Pharmaceuticals industry, part of the Health Care
sector. It first went public in 2004.