The All Share Price Index fell 0.06 percent, down 2.97 points to close at 4,928.5. The Milanka Price Index of more liquid stocks fell a marginal 0.01 percent, down 0.48 points to 4,380.27 while the S&P SL20 closed at 2,766.03, down 0.24 points, or 0.01 percent lower.
Turnover reached Rs. 353.7 million on 8.5 million shared changing hands during the day.
Net foreign inflows amounted to Rs. 119.8 million with foreign selling amounting to Rs. 125 million.
Year-to-date, the bourse has fallen 18.9 percent, and is one of the worst performing markets in the world.
"The market remained stagnant with lower activity levels as crossings in JKH boosted turnover for the day. Blue chips topped the turnover for showing positive signs that investor accumulation is taking place. Sri Lanka Telecom, John Keells Holdings and Bukit Darah were the main positive contributors for the day while AHOT Properties, Hatton National Bank and Keells Hotels the main negative contributors," Softlogic Equity Research said.
"The stagnant mode in the bourse continues with investor interest deteriorating primarily due to the prevailing interest rates. However the attractive valuations are continuing to grab foreign interest with Net foreign inflow for the year exceeding LKR 26 bn."