The benchmark Korea Composite Stock Price Index(KOSPI) closed the week at one-thousand-973-point-57.

The main index lost 22-point-28 points, or one-point-12 percent during Friday's session.

The tech-heavy KOSDAQ advanced two-point-31 points, or zero-point-34 percent, to 690-point-69.

On the foreign exchange market, the value of the local currency weakened ten-point-seven won against the U.S. dollar to one-thousand-154-point-two won.