** Shares of Portuguese retailer Jeronimo Martins JMT.LS drop 2.3% after co posts 9% revenue growth in Q4 preliminary results
** J.P. Morgan says growth driven by sequential improvement in Biedronka volumes and robust expansion efforts, though Polish grocery market remains sluggish
** Biedronka's 2.4% like-for-like sales growth outpace JPM estimates of 2%, but fall short of market consensus of 2.8%
** JPM says JMT's valuation remains attractive, although no significant near-term catalysts are in focus ahead of full-year results on March 18
** JMT on track for worst day since November 28, if losses hold
(Reporting by Mireia Merino)
((Mireia.merino@thomsonreuters.com))