** Shares of discount store operator Ross Stores ROST.O fall 11% to $136.5 after hours
** ROST withdraws fiscal 2025 forecasts; says tariffs could take a toll on its profitability this year
** "Heightened macroeconomic and geopolitical uncertainty persists, most notably prolonged inflation and evolving trade policies" — CEO Jim Conroy
** More than half of the goods ROST sells originates from China, CEO adds
** ROST expects Q2 earnings to be between $1.40 and $1.55 per share, including a cost impact of $0.11 to $0.16 per share from announced tariffs
** Q1 sales rose to $4.98 billion, edging past estimates of $4.97 billion
** ROST has risen 0.65% YTD
(Reporting by Juby Babu in Mexico City)
((Juby.Babu@thomsonreuters.com))