Rigid packaging companies Ball Corporation BLL and Silgan Holdings Inc. SLGN may suffer due to worsening industry fundamentals and their valuations remain unattractive, according to KeyBanc Capital Markets. The Analyst KeyBanc Capital Markets analyst Adam Josephson downgraded shares of both Ball Corporation and Silgan Holdings from Sector Weight to Underweight. The analyst's price targets for Ball Corporation and Silgan are $36 and $25, respectively.SourceSome downside still holds. $BLL, Ball Corporation / H4 Pretty much the same here. $SLGN, Silgan Holdings Inc. / H4