Shares of ZTO Express Inc. (ZTO) tumbled 5.49% in pre-market trading on Tuesday, following reports that e-commerce giant Alibaba is considering reducing its stake in the Chinese logistics company. The news has sent shockwaves through the market, causing investors to reassess their positions in ZTO Express.

According to a Bloomberg report, Alibaba is exploring options to decrease its holdings in ZTO Express. This potential move comes as Alibaba has been reevaluating its investment portfolio and focusing on core businesses. The exact size of the stake reduction is yet to be determined, but the mere possibility has been enough to trigger a significant sell-off in ZTO's stock.

The market's reaction reflects concerns about the implications of Alibaba's potential divestment. ZTO Express has benefited from its strategic partnership with Alibaba, which has been a major source of business for the logistics company. A reduced stake could signal a shift in this relationship, potentially impacting ZTO's future growth prospects. Investors will be closely watching for any official announcements from either company to gain clarity on the situation and assess the long-term impact on ZTO Express's business model and market position.