SoftBank has returned to reinvest in the American Express-backed payment technology provider, which is now valued at nearly $2bn.

Internet and telecommunications group SoftBank and investment manager Viking Global Investors have co-led a $250m round for Mexico-based digital payment services provider Clip at a valuation of almost $2bn.

Founded in 2012, Clip sells a range of payment card readers that attach to mobile devices, allowing businesses to process a range of payment methods. It will use the funding to support business growth and continue the development of its platform.

The company has raised at least $410m to date. SoftBank’s…