As previously reported, Longbow analyst Chris Olin downgraded Allegheny Technologies (ATI) to Underperform from Neutral after a survey of his industry contacts revealed events he believes could have a "disproportionately negative impact" on Allegheny results in calendar year 2020. The biggest "red flag" was supplier concerns about another 737 Max production ramp delay, though he is also concerned with indications that two major jet engine OEMs recently lowered their production schedules, Olin tells investors. Based on his reduced Boeing (BA), Rolls-Royce and GE (GE) revenue assumptions, Olin lowered his 2020 EPS forecast for Allegheny, on which he has an $18 price target.