In trading on Thursday, shares of the PowerShares Dynamic Building & Construction Portfolio ETF (PKB - Get Report) crossed below their 200 day moving average of $28.81, changing hands as low as $28.80 per share. PowerShares Dynamic Building & Construction Portfolio shares are currently trading down about 1.3% on the day. The chart below shows the one year performance of PKB shares, versus its 200 day moving average:

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PowerShares Dynamic Building & Construction Portfolio 200 Day Moving Average Chart

Looking at the chart above, PKB's low point in its 52 week range is $23.97 per share, with $30.16 as the 52 week high point — that compares with a last trade of $28.81.