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

Coherent, Inc. (symbol: COHR) was one of the biggest winners of the trading
day today (2016-01-29), gaining 23.55%. The number of shares that changed
hands was 1,247,788, or about 8.1 times the average daily volume in the
stock.
The closing price was $77.27, amounting to a market cap of $1,870,000,000,
about -6.63% off the highest price in the last 12 months. The stock has
been trading at a range between $52.15 and $82.76.
COHR is in the Biotechnology: Laboratory Analytical Instruments industry,
part of the Capital Goods sector.
Looking at its valuation, the stock is now trading at 25.25 times earnings.