The benchmark Pakistan Stock Exchange gained 1,003 points, or 2.7 per cent, to touch a high of 38,520 points by the close of trade.
"After a long time, Pakistan has been classified as an emerging market and that boosted investor sentiment," Rehan Atiq, the chief operating officer of brokerage house Shajar Capital, said.
Pakistan was downgraded to frontier market status in 2008, thanks to a slipping domestic economic outlook and growing insecurity compounded by rising global oil prices hitting the world economy.
"The inclusion of Pakistan in the category of 'Emerging Market' is an indication of the confidence of the international institutions in Pakistan's economy," finance minister Ishaq Dar said in a statement.
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