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

Arena Pharmaceuticals, Inc. (symbol: ARNA) was one of the biggest winners
of the trading day today (2016-06-08), gaining 9.69%. The number of shares
that changed hands was 2,509,033, or about 1.3 times the average daily
volume in the stock.
The closing price was $2.15, amounting to a market cap of $522,540,000,
about -58.01% off the highest price in the last 12 months. The stock has
been trading at a range between $1.3 and $5.12.
ARNA is in the Major Pharmaceuticals industry, part of the Health Care
sector. It first went public in 2000.