Resimac Group has acquired 15 per cent of Adelaide-based Positive Group, which specialises in asset finance solutions for consumers, mortgage brokers and small businesses. "Consideration for the purchase was A$3 million, and Resimac holds an option to acquire a further 10 per cent," ASX-listed Resimac said yesterday.Established in 2009, the Positive business "has grown from a father and son partnership into an Australian wide organisation," according to its website.Tom Caesar, the son, is managing director of an outfit set up with his father Mark Caesar.Resimac CEO Scott McWilliam said its "investment will help to rapidly expand Positive Group's technology and web assets "We believe the Positive Group has a strong growth opportunity through leveraging its Nodifi digital platform which allows Nodifi's business partners to offer their clients the best available products with the speed and service that is expected in this fast-paced finance environment."Our partnership also supports two of Resimac's strategic priorities, focusing on diversification of asset classes, and improving our customer experience using digital technologies."