** Shares of Singapore-based software firm Grab Holdings GRAB.O fall 7.5% to $4.94 in after-hours trade
** Company forecasts 2025 annual revenue between $3.33 billion and $3.40 billion, compared with analysts' estimates of $3.40 billion, according to data compiled by LSEG
** GRAB battles with tough competition in food delivery and ride-hailing businesses
** Grab reported fourth-quarter revenue of $764 million, compared with analysts' average estimate of $757.6 million
** In 2024, company's shares rose 40.1%
(Reporting by Kritika Lamba in Bengaluru)
((Kritika.Lamba@thomsonreuters.com))