** Citi lifts railcar lessor GATX GATX.N to "buy" from "neutral", raises price target to $211 from $210 earlier
** New PT represents a 19.5% premium on stock's last close
** Brokerage says co's diverse end markets and favorable industry supply/demand support earnings stability
** Says the Iran conflict does not appear to have driven material change with GATX's lessees
** Brokerage adds that GATX's fleet remains ~90% utilized and its renewals remain strong
** As of last close, shares were up about 4.1% YTD
(Reporting by Parth Chandna)
((Parth.Chandna@thomsonreuters.com;))