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

ABIOMED, Inc. (symbol: ABMD) was one of the biggest winners of the trading
day today (2015-08-04), gaining 14.73%. The number of shares that changed
hands was 2,803,143, or about 4.1 times the average daily volume in the
stock.
The closing price was $88.8, amounting to a market cap of $3,660,000,000,
about -3.78% off the highest price in the last 12 months. The stock has
been trading at a range between $21.84 and $92.29.
ABMD is in the Medical/Dental Instruments industry, part of the Health Care
sector.
Looking at its valuation, the stock is now trading at 33.51 times earnings.