The American Express, Comcast and Amazon-backed grocery delivery service is targeting up to $250m, according to a securities filing.

Instacart, the US-based personal shopping service backed by payment services provider American Express, mass media group Comcast and e-commerce firm Amazon, is raising up to $250m in funding, Axios reported yesterday.

The funding will be part of a series E round, according to a securities filing seen by Axios. The company was valued at $3.4bn after its last funding, a $400m series D round led by venture capital firm Sequoia Capital in March 2017.

Instacart runs an online service where…