Short seller Jim Chanos gave a presentation Friday warning of risks to China's economy, raising questions about stock valuations just as Chinese e-commerce giant Alibaba set a record for the largest-ever initial public offering.
In a 30-page presentation obtained by CNBC.com, Chanos, of Kynikos Associates, says the stock market is "no longer cheap" and that "China global risk" is increasing.
At least one attendee tweeted that Chanos spoke specifically about Alibaba, saying, "quick little thought about Ali Baba: everyone forgets that he was a thief." Chanos reportedly also said that Alibaba's true margins may be "hard to know."
Chanos declined to comment to CNBC.com.