The Colombo All Share Index closed at 5,890.69 down 37.84 points and the S & P SL 20 Index closed 32.46 points lower at 3,189.94 down 1.01 percent.
Turnover was 3,038 million rupees. Top contributors to the day's turnover were Sampath Bank with 1,690 million rupees, JKH with 326 million rupees and Aitken Spence with 246 million rupees.
Index heavy John Keells Holdings PLC slipped 3.40 rupees to close at 221.70 rupees down 1.51 percent.
Aitken Spence PLC gained 1.00 rupees to close at 135.00 down 0.75 percent.
Dialog Axiata PLC slipped 0.20 cents to close at 8.80 rupees down 2.22 percent.