In trading on Tuesday, shares of the PowerShares S&P 500 BuyWrite Portfolio ETF (PBP) crossed below their 200 day moving average of $20.95, changing hands as low as $20.94 per share. PowerShares S&P 500 BuyWrite Portfolio shares are currently trading down about 0.2% on the day. The chart below shows the one year performance of PBP shares, versus its 200 day moving average:
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Looking at the chart above, PBP's low point in its 52 week range is $19.50 per share, with $22.00 as the 52 week high point — that compares with a last trade of $20.95. 
