Ascential has invested in Hudson MX for the second time, as part of a $63.5m round that will fund the growth of its media purchasing and accounting platform.

Hudson MX, a US-based developer of media purchasing and accounting software, raised $63.5m on Wednesday in a series D round led by data and analytics provider Ascential.

Founded in 2016, Hudson MX provides an advertising software platform used by enterprise customers to manage digital media planning, buying and accounting activities.

The company’s flagship product BuyerAssist, has been used by 27 of the leading media agencies in the US and serviced more than 200 advertisers across the country.

The funding will…