$PACB is one of biggest losers #stocks today. read more:

Pacific Biosciences of Californ (symbol: PACB) was one of the worst losers
of the trading day today (2016-04-07), losing -8.0%. The number of shares
that changed hands was 2,342,259, or about 1 times the average daily volume
in the stock.
The closing price was $9.2, amounting to a market cap of $735,840,000,
about -34.29% off the highest price in the last 12 months. The stock has
been trading at a range between $3.58 and $14.0.
PACB is in the Biotechnology: Laboratory Analytical Instruments industry,
part of the Capital Goods sector. It first went public in 2010.