In trading on Friday, shares of Rubicon Technology Inc (RBCN) crossed below their last reported book value — defined as common shareholder equity per share — of $9.58, changing hands as low as $9.30 per share. Rubicon Technology Inc shares are currently trading off about 3.8% on the day. The chart below shows the one year performance of RBCN shares, versus its 50 and 200 day moving averages:
Looking at the chart above, RBCN's low point in its 52 week range is $4.83 per share, with $13.78 as the 52 week high point — that compares with a last trade of $9.33.
According to the ETF Finder at ETF Channel, RBCN makes up 1.54% of the WilderHill Clean Energy Portfolio ETF (PBW) which is trading lower by about 3.4% on the day Friday.