The offering, in which nine investors took part, follows an initial $1.65m financing round early last year.

The firm, led by Albert Azout, launched its product in September last year. It runs a panel of internet users who have agreed to have their activity tracked, and uses this data to analyse what they are interested in, how they interact with others and how their behaviour is influenced by context.

The result is real-time data on audience behaviour for publishers, and better targeting for advertisers, Sociocast says.