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

Medidata Solutions, Inc. (symbol: MDSO) was one of the biggest winners of
the trading day today (2016-04-21), gaining 11.15%. The number of shares
that changed hands was 994,908, or about 2.0 times the average daily volume
in the stock.
The closing price was $46.17, amounting to a market cap of $2,490,000,000,
about -24.69% off the highest price in the last 12 months. The stock has
been trading at a range between $30.22 and $61.31.
MDSO is in the Computer Software: Prepackaged Software industry, part of
the Technology sector. It first went public in 2009.
Looking at its valuation, the stock is now trading at 200.74 times earnings.