$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 (2016-08-03), losing -8.07%. The number of shares
that changed hands was 2,641,157, or about 2 times the average daily volume
in the stock.
The closing price was $7.75, amounting to a market cap of $675,550,000,
about -44.64% 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.