$HERO is one of biggest winner #stocks today. read more:

Hercules Offshore, Inc. (symbol: HERO) was one of the biggest winners of
the trading day today (2016-04-19), gaining 17.11%. The number of shares
that changed hands was 1,073,781, or about 3.6 times the average daily
volume in the stock.
The closing price was $3.97, amounting to a market cap of $641,710,000,
about -72.62% off the highest price in the last 12 months. The stock has
been trading at a range between $0.73 and $14.5.
HERO is in the Oil & Gas Production industry, part of the Energy sector. It
first went public in 2005.