CHARLOTTE, N.C. — Adhesion Technologies, whose business is enhancing the presentation of aggregated data, has bought Ettache, which gathers such data, for an undisclosed price.

Todd Johnson, Adhesion’s president and chief executive officer, said it had collaborated with several other such back-end aggregators but was not “satisfied with the solutions they offered us.” He said Ettache had built “a slick on-premises model” that enhances security by not storing data on the server of a third party, such as an aggregation provider. The data are stored on client banks’ servers, for instance.

The stock-and-cash purchase was announced Monday. Adhesion’s flagship product, called EA2 for “enhanced account aggregation,” is designed to be used with wealth management tools.

In a report last month, “Account Aggregation: The Elusive ROI,” Forrester Research of Cambridge, Mass., questioned whether companies could earn a return on investments in aggregation technology. “There’s no ROI on aggregation” and “few firms should even bother with aggregation today,” the report said.

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