In trading on Tuesday, shares of the PowerShares FTSE RAFI Developed Markets ex-U.S. Portfolio ETF (PXF) crossed below their 200 day moving average of $43.99, changing hands as low as $43.86 per share. PowerShares FTSE RAFI Developed Markets ex-U.S. Portfolio shares are currently trading down about 1.2% on the day. The chart below shows the one year performance of PXF shares, versus its 200 day moving average:Looking at the chart above, PXF's low point in its 52 week range is $38.65 per share, with $46.58 as the 52 week high point — that compares with a last trade of $43.89.