In April, Getty Images acquired Pixel Images Holdings Limited, the Irish parent company of Stockbyte and Stockdisc, for $135 million. Most of the content licensed under the Stockbyte and Stockdisc brands through a worldwide network of distributors is already available on www.gettyimages.com, with the remainder to be added by midyear.

Despite an aggressive acquisition strategy over the past 18 months, its holdings now include Photonica, Digital Vision, Medio Images and iStockphoto, the company recently lost standing...