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

Constellium N.V. (symbol: CSTM) was one of the biggest winners of the
trading day today (2016-08-29), gaining 16.23%. The number of shares that
changed hands was 2,790,648, or about 3.9 times the average daily volume in
the stock.
The closing price was $6.16, amounting to a market cap of $650,020,000,
about -38.03% off the highest price in the last 12 months. The stock has
been trading at a range between $3.38 and $9.94.
CSTM is in the Metal Fabrications industry, part of the Basic Industries
sector. It first went public in 2013.