In trading on Tuesday, shares of Energy Recovery Inc (ERII - Get Report) crossed below their 200 day moving average of $4.72, changing hands as low as $4.59 per share. Energy Recovery Inc shares are currently trading down about 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 $3.30 per share, with $6.98 as the 52 week high point — that compares with a last trade of $4.62.

According to the ETF Finder at ETF Channel, ERII makes up 3.47% of the First Trust ISE Water Index Fund ETF ( FIW) which is trading lower by about 1.8% on the day Tuesday.