** BofA Global Research initiates coverage for industrial maintenance and safety products supplier WW Grainger with "underperform" rating at $925
** PT represents 10% downside to stock's last close
** Brokerage expects co's slow market share gains and contracted margins to continue
** BofA expects faster growth in co's lower-margin e-commerce businesses will contribute to margin headwinds
** Peers have done better head-to-head in specific products than GWW -BofA
** 2 of 18 brokerages rate stock "strong buy", 15 "hold" and one "sell"; median PT is $973 - LSEG
** As of last close, GWW up 24.7% YTD
(Reporting by Anshuman Tripathy in Bengaluru)
((Anshuman.Tripathy@thomsonreuters.com))