KUALA LUMPUR (Feb 19): The main index at Bursa Malaysia reversed its earlier gains and drifted lower at mid-morning today, tracking lacklustre regional markets following the overnight decline at US markets. At 10am, the FBM KLCI dipped 0.64 points to 1,575.20. The index had earlier risen to a high of 1,582.18. Market breadth turned negative with 658 losers and 258 gainers, while 376 counters traded unchanged. Trading volume was 4.46 billion shares valued at RM1.75 billion. The top losers included Hengyuan Refining Company Bhd, CI Holdings Bhd, Lii Hen Industries Bhd, Aeon Credit Service (M) Bhd, Petron Malaysia Refining & Marketing Bhd, Hartalega Holdings Bhd and Muda Holdings Bhd.