FILE PHOTO: The Huya logo is shown on the NYSE boards ahead of the company's IPO at the New York Stock Exchange (NYSE) in New York, U.S., May 11, 2018. REUTERS/Brendan McDermid

STOCKHOLM (Reuters) - MTG MTGb.ST shares leapt as much as 25% on Monday after the Swedish e-sports and gaming firm said Chinese live streaming platform Huya HUYA.N would buy a stake in its Turtle Entertainment (ESL) business and help it expand into China.

Huya, backed by internet giant Tencent 0700.HK, will invest $30 million in ESL, giving the whole of ESL an enterprise value of $425 million, MTG said.

That is more than investors had priced into MTG shares, according to SEB analyst Mathias Lundberg.

“MTG owns 82% of ESL, which values their stake at 3.4 billion Swedish crowns ($354 million), which is much more than investors had discounted in the share,” he said.

MTG shares jumped to a six-week high in early trade and were up 14% to 86 crowns at 0925 GMT, valuing the company at around 5.7 billion crowns.

Huya and ESL, the largest e-sports company in the world, will also form a joint venture, while ESL will issue $22 million worth of new shares to facilitate further expansion, MTG said.

“We are excited to announce this term sheet for an important strategic partnership which provides us with a strong partner in Huya to pave the way for a successful ESL expansion into the thriving Chinese e-sports and gaming market in due time,” MTG Chief Executive Jørgen Madsen Lindemann said in a statement.

The Chinese e-sports market is expected to generate revenue of $210 million this year, overtaking western Europe as the second-largest e-sports region globally, MTG said.