 Stock Analysts downgrades for Friday, January 10th: Advantage Oil Gas OTCMKTS:AAVVF was downgraded by analysts at ValuEngine from a hold rating to a sell rating. Atlas Air Worldwide NASDAQ:AAWW was downgraded by analysts at BidaskClub from a hold rating to a sell rating. ADMA Biologics NASDAQ:ADMA was downgraded by analysts at ValuEngine from a ... 