Tesla Stock Rises. Battery Supplier Earnings Provide a Boost.

Tesla stock rose early Tuesday, along with its battery supplier, which reported better-than-expected earnings. The move came after Contemporary Amperex Technology Ltd., better known as CATL, the world’s largest lithium-ion battery maker, reported fourth-quarter net income of $3.3 billion on sales of $20.3 billion. CATL stock rose 9.3% in overseas trading.