The acquisition adds seven clients from multiple industries, including banking, insurance and media to Acxiom's client base.
It also includes a team of about 75 associates based in the US, who deal with account management, technical, and analytic functions.
Annual revenues are estimated to be approximately $16m (£8.1m).
John A Meyer, chief executive officer and president of Acxiom, said: "This acquisition expands Acxiom's roster of blue-chip clients while adding some talented associates who are dedicated to serving clients and growing the business.
"Each client is a leader in its respective industry, and some are multi-national enterprises.
"In addition to enhancing their database marketing capabilities, Acxiom looks forward to introducing clients to new strategies and services -- particularly in the digital space -- to help them build even stronger relationships with target audiences around the globe."