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

Energy Recovery, Inc. (symbol: ERII) was one of the worst losers of the
trading day today (2016-04-22), losing -6.04%. The number of shares that
changed hands was 635,197, or about 1 times the average daily volume in the
stock.
The closing price was $11.98, amounting to a market cap of $656,960,000,
about -10.26% off the highest price in the last 12 months. The stock has
been trading at a range between $2.07 and $13.35.
ERII is in the Industrial Machinery/Components industry, part of the
Technology sector. It first went public in 2008.