** Shares of Woolworths WOW.AX fall as much as 9.8% to A$33.63, hitting their lowest level since February 25
** Stock set for its weakest intraday trading session since August 27, if current losses hold
** Woolworths, Australia's largest grocer, warned that domestic food segment earnings growth could no longer reach upper end of annual guidance range
** Company will freeze shelf prices for three months on 300 household staples from May 1, will absorb any agreed-upon supplier cost increases to maintain the price freeze
** Woolworths posted group sales of A$18.10 billion ($12.90 billion) for 13-week period ended April 5
** Day's moves cut stock's YTD gains to 18.4%
($1 = 1.4033 Australian dollars)
(Reporting by Shivangi Lahiri in Bengaluru)
((shivangi.lahiri@thomsonreuters.com))