Dhaka, Feb. 15 -- Bangladesh's benchmark stock index posted its biggest single-day gain in nearly a year and a half on Sunday, as investors reacted to the BNP's landslide election victory and the prospect of a new government.

The Dhaka Stock Exchange's (DSE) broad index, the DSEX, closed up 200 points, or about 3.7 percent, at 5,600.65, its largest single-day rise since Aug 6, 2024, when it climbed 197 points after the fall of the Awami League government, bdnews24.com reports.

The rally gathered pace after the Feb 12 parliamentary election, in which the BNP-led alliance secured 212 seats and is set to form a government on Tuesday.

The index had already risen 82 points in the last session before the vote. It extended gains immediately a...