** Shares of Uncrustables maker J.M. Smucker SJM.N down 1.3% at $109.45 premarket
** Brokerage Argus Research downgrades SJM to "hold" from "buy" citing the co's struggles to grow volumes
** Analysts say tariffs are adding to margin challenges, raising concerns over profitability in the coffee segment
** Also adds, SJM faces ongoing commodity price risk due to its dependence on agricultural inputs vulnerable to external factors like weather and geopolitical instability
** Analysts say they may revisit "buy" rating if margin and volume growth show sustained improvement
** Up to last close, SJM stock up almost 1% YTD
(Reporting by Anshi Sancheti)
((Anshi.Sancheti@thomsonreuters.com))