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

Rovi Corporation (symbol: ROVI) was one of the biggest winners of the
trading day today (2015-12-25), gaining 8.19%. The number of shares that
changed hands was 3,826,059, or about 2.0 times the average daily volume in
the stock.
The closing price was $15.86, amounting to a market cap of $1,310,000,000,
about -40.02% off the highest price in the last 12 months. The stock has
been trading at a range between $8.01 and $26.44.
ROVI is in the Multi-Sector Companies industry, part of the Miscellaneous
sector.