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

Sangamo BioSciences, Inc. (symbol: SGMO) was one of the worst losers of the
trading day today (2015-08-06), losing -17.86%. The number of shares that
changed hands was 2,883,859, or about 3 times the average daily volume in
the stock.
The closing price was $7.59, amounting to a market cap of $528,130,000,
about -60.57% off the highest price in the last 12 months. The stock has
been trading at a range between $7.39 and $19.25.
SGMO is in the Biotechnology: Biological Products (No Diagnostic
Substances) industry, part of the Health Care sector. It first went public
in 2000.