Previously known as AxiomSL and Calypso Technology, the company had its acquisition by Nasdaq, Inc. completed in November 2023.

[1] Dual headquartered in London and New York City,[2] Calypso Technology was founded in 1997 by Charles Marston and Kishore Bopardikar.

Their flagship product, Bank-in-a-Box, bundles the software with a Target Operating Model for the processing of all asset classes, as well as pre-configured business workflows and market best practices.

[citation needed] In July 2017, Calypso completed the acquisition of a minority stake in Sernova Financial.

[7] In June 2023, Nasdaq, Inc. announced that it had agreed to acquire Adenza in a $10.5 billion cash-and-stock deal, the biggest for the US exchange operator to date.