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

Quad Graphics, Inc (symbol: QUAD) was one of the biggest winners of the
trading day today (2016-05-04), gaining 27.2%. The number of shares that
changed hands was 1,468,661, or about 5.4 times the average daily volume in
the stock.
The closing price was $15.62, amounting to a market cap of $779,830,000,
about -28.84% off the highest price in the last 12 months. The stock has
been trading at a range between $7.32 and $21.95.
QUAD is in the Publishing industry, part of the Miscellaneous sector.