** Shares of grocer Albertsons ACI.N down ~6% at $20.30 before the bell

** Expects annual profit below estimates as American consumers turn cautious due to uncertainty from President Donald Trump's tariffs

** Sees annual profit of $2.03 to $2.16 per share, compared with average analysts' estimate of $2.28, according to data compiled by LSEG

** ACI says will invest more on merchandising and in stores to boost sales

** Up to last close, stock had risen nearly 10% YTD

(Reporting by Ananya Mariam Rajesh in Bengaluru)

((AnanyaMariam.Rajesh@thomsonreuters.com ; X: https://twitter.com/AnanyaMariam))