NEW YORK (AP) — Alibaba debuted as a publicly traded company Friday and swiftly climbed nearly 40 percent in a mammoth IPO that offered eager investors seemingly unlimited growth potential and a way to tap into the burgeoning Chinese middle class.

The sharp demand for shares sent the market value of the e-commerce giant soaring well beyond that of Amazon, eBay and even Facebook. The initial public offering was on track to be the world’s largest, with the possibility of raising as much as $25 billion.