In trading on Tuesday, shares of Layne Christensen Co. ( LAYN) crossed below their last reported book value — defined as common shareholder equity per share — of $10.41, changing hands as low as $10.19 per share. Layne Christensen Co. shares are currently trading down about 1.8% on the day. The chart below shows the one year performance of LAYN shares, versus its 50 and 200 day moving averages:
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Looking at the chart above, LAYN's low point in its 52 week range is $10.10 per share, with $20.75 as the 52 week high point — that compares with a last trade of $10.33. LAYN makes up 1.60% of the Environmental Services ETF ( EVX) 
