NEW YORK ( TheStreet) -- CHANGE IN RATINGS Apache ( APA) was downgraded to hold at TheStreet Ratings. Greenhill ( GHL) was upgraded to buy at TheStreet Ratings. Questcor ( QCOR) was upgraded at Bank of America/Merrill Lynch to buy from neutral. $80 price target. Acthar sales are driving growth, BofA/Merrill said. Tupperware ( TUP) was downgraded at BMO Capital to market perform from outperform. Valuation call, based on a $91 price target, BMO Capital said.