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

Esperion Therapeutics, Inc. (symbol: ESPR) was one of the worst losers of
the trading day today (2015-10-05), losing -6.83%. The number of shares
that changed hands was 1,293,076, or about 1 times the average daily volume
in the stock.
The closing price was $24.97, amounting to a market cap of $561,380,000,
about -79.36% off the highest price in the last 12 months. The stock has
been trading at a range between $18.0 and $120.96.
ESPR is in the Major Pharmaceuticals industry, part of the Health Care
sector. It first went public in 2013.