Nairobi, June 22 -- Investors on the Nairobi Securities Exchange (NSE) gained Sh168.8 billion in the last one week, pushing the value of listed shares to an all-time high, on the back of positive progress in peace talks between Iran and the United States.

Market capitalisation - the measure of investor wealth - rose by 4.8 percent to a new all-time high of Sh3.63 trillion, largely driven by the return of foreign investors who had previously exited the Nairobi bourse as fears of a prolonged Iran war fanned inflation concerns.

An interim peace deal between the two warring nations saw the Strait of Hormuz reopened, albeit temporarily, easing inflationary concerns that had driven investors to dollar assets in the US.

Foreign investors were...