In trading on Tuesday, shares of Energy Recovery Inc (ERII - Get Report) crossed below their 200 day moving average of $5.36, changing hands as low as $4.94 per share. Energy Recovery Inc shares are currently trading off about 8.5% on the day. The chart below shows the one year performance of ERII shares, versus its 200 day moving average:

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Energy Recovery Inc 200 Day Moving Average Chart

Looking at the chart above, ERII's low point in its 52 week range is $3.82 per share, with $7.75 as the 52 week high point — that compares with a last trade of $5.04.

According to the ETF Finder at ETF Channel, ERII makes up 3.36% of the First Trust ISE Water Index Fund ETF ( FIW which is trading higher by about 0.3% on the day Tuesday.