The Alibaba Group of China has become a colossus in the global Internet world, with a market value of nearly $200 billion.

Now its online payment affiliate is aiming for a similarly lofty financial goal: becoming one of the most valuable privately held technology companies in the world.

The affiliate, known as the Ant Financial Services Group, said on Tuesday that it had raised $4.5 billion from investors. The private financing round suggests that the company is now valued at about $60 billion — or more than $10 billion over the market value of PayPal Holdings, its closest analogue.

Ant Financial may not be as well known in the West as Silicon Valley darlings like Uber Technologies, which was most recently valued at about $62.5 billion. But Ant Financial — whose controlling shareholder is Alibaba’s billionaire founder, Jack Ma — has become an online power in its own right. It is one of the biggest electronic payment companies in the world by virtue of Alipay, a payment service that is commonly used in China.