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

Retrophin, Inc. (symbol: RTRX) was one of the biggest winners of the
trading day today (2015-09-23), gaining 5.39%. The number of shares that
changed hands was 1,437,991, or about 2.7 times the average daily volume in
the stock.
The closing price was $23.86, amounting to a market cap of $852,900,000,
about -35.58% off the highest price in the last 12 months. The stock has
been trading at a range between $7.85 and $37.04.
RTRX is in the Major Pharmaceuticals industry, part of the Health Care
sector.