NEW YORK (TheStreet) -- RATINGS CHANGES

Amtech Systems (ASYS - Get Report) was upgraded to hold at TheStreet Ratings. You can view the full analysis from the report here: ASYS Ratings Report

YY (YY - Get Report) was upgraded to buy at TheStreet Ratings. You can view the full analysis from the report here: YY Ratings Report

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This article was written by a staff member of TheStreet.