Updates
** Guzman Y Gomez GYG.AX stock rise as much as 19.1% to A$21.54, on track for biggest intraday pct gain since April 7
** Stock touches highest level since April 23
** Mexican-themed fast-food chain says it has decided to exit US market, cease trading its restaurants in Chicago
** "Business is unlikely to deliver the performance that would justify continued investment of shareholder capital" - Steven Marks, founder and Co-CEO of GYG
** Expects to recognise one-off impact of between $30 million-$40 million in FY results
** Adds, one-off costs not expected to affect FY26 final dividend
** Losses from the US business were weighing on the group's earnings, so the sooner-than-anticipated exit is positive, says RBC Capital Markets analyst
** YTD, stock down 2.5%
(Reporting by Aamir Sheik Khalid and Rajasik Mukherjee in Bengaluru)
((Rajasik.Mukherjee@thomsonreuters.com))