New Delhi, Jan. 20 -- Shares of Hybe, the South Korean entertainment agency, hit a four-year high on Monday as BTS announced a world tour last week. The shares rose as much as 9.5% after multiple brokerages reportedly upgraded their target prices on Hybe stock following the announcement, CNBC reported.

The gain in Hybe share price brought cheers to investors, adding more than 1 trillion South Korean won ($677 million) to the market value of the company.

This was the highest level that Hybe's market value was in since November 2021, according to CNBC.

Shares of Hybe ended 8.92% higher, clocking their highest levels since December 2021 after the K-Pop agency unveiled world tour plans for boy band BTS.

The rally in Hybe shares come after...