In trading on Wednesday, shares of Ultra Clean Holdings Inc (UCTT - Get Report) crossed below their 200 day moving average of $21.87, changing hands as low as $20.78 per share. Ultra Clean Holdings Inc shares are currently trading off about 12.2% on the day. The chart below shows the one year performance of UCTT shares, versus its 200 day moving average:

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Ultra Clean Holdings Inc 200 Day Moving Average Chart

Looking at the chart above, UCTT's low point in its 52 week range is $9.25 per share, with $34.59 as the 52 week high point — that compares with a last trade of $21.18.

According to the ETF Finder at ETF Channel, UCTT makes up 2.37% of the PowerShares Dynamic Semiconductors Portfolio ETF ( PSI which is trading lower by about 5.6% on the day Wednesday.