Wanda Film said in a regulatory filing that Alibaba will buy a 7.66 per cent stake for 4.68 billion yuan, and a holding company controlled by the Beijing government will take 5.11 per cent for 3.12 billion yuan (around $500 million), generating over $1.2 billion for the conglomerate.
Following rapid diversification, Wanda ended up mired in debt and under the scrutiny of Chinese regulators, forcing its head Wang Jianlin -- once China's richest man -- to sell off parts of his empire.
Wanda Film owns 1,352 cinemas around the world with more than 14,000 screens -- around 12 per cent of the global box office, according to the Wanda Group website.
Alibaba will now become the second-largest shareholder in the division, strengthening its position in China's massive entertainment market.
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The e-commerce behemoth already has a foothold in Hollywood, with its 2016 purchase of a minority stake in Steven Spielberg's Amblin Partners, which owns DreamWorks Pictures.
Wanda originally specialised in real estate, but later diversified into cinema, amusement parks and sports -- including the 2015 acquisition of a 20-percent stake in Spanish top-flight football club Atletico Madrid.