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Alibaba's earnings worry investors

Shares in Alibaba have plunged almost 9% after the Chinese e-commerce giant's quarterly earnings report showed weaker-than-expected sales growth.

The online shopping platform posted a 40% jump in sales to $4.2bn, but investors were hoping for more.

Alibaba was also recently reprimanded by a Chinese regulator, which accused the company of having lax controls over vendors.

The BBC's John Sudworth reports from Shanghai.

Watch more reports on Asia Business Report's website.

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