China's Alibaba and JD.com have become the largest holdings of US investor Michael Burry's investment firm Scion Asset Management, accounting for 20% of his stock portfolio, regulatory filings showed. Burry's stake in JD.com more than tripled to 250,000 shares (worth $11 million), while his stake in Alibaba doubled to 100,000 shares (worth $10 million) as of March 31.