The Colombo benchmark All Share Price Index closed 26.81 points higher at 7,087.41, up 0.38 percent. The S&P SL20 closed 30.00 points higher at 3,932.81, up 0.77 percent.
Turnover was 1.25 billion rupees, down from 1.63 billion rupees a day earlier with 113 stocks closed positive against 92 negative.
The aggregate value of all off-the-floor deals represented 9 percent of the daily turnover.
John Keells Holdings closed 40 cents higher at 249.90 rupees with market transactions of 158.83 million rupees contributing 13 percent of the turnover.
MTD Walkers closed 4.60 rupees higher at 56.00 rupees, attracting most number of trades during the day.
Foreign investors bought 282.38 million rupees worth shares while selling 84.22 million rupees worth shares.
Commercial Bank of Ceylon closed 4.30 rupees higher at 155.30 rupees, contributing most to the index gain.