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

Seadrill Limited (symbol: SDRL) was one of the biggest winners of the
trading day today (2016-05-25), gaining 11.44%. The number of shares that
changed hands was 13,452,052, or about 0.8 times the average daily volume
in the stock.
The closing price was $3.41, amounting to a market cap of $1,680,000,000,
about -74.15% off the highest price in the last 12 months. The stock has
been trading at a range between $1.57 and $13.19.
SDRL is in the Oil & Gas Production industry, part of the Energy sector.