The deal completed on 12 July, however, financial details of the acquisition have not been disclosed.
The two firms have been long-time partners on the index business side with Ultumus providing ETF calculation services and 95% coverage of the global ETF market.
Marion Leslie, head of financial information and member of executive board at SIX, said: “The combination of our capabilities will enable us to provide market-leading services to support our customers in the ETF market.”
Bernie Thurston (pictured), CEO of Ultumus, added: “This further enables us to provide our ETF and index managed data service to trading desks, asset managers and enterprise data management groups, alongside providing our PCF calculation service to more ETF issuers to gain competitive edge.”
Martyn James, managing director at ETFS Capital, said: “We are proud to have been part of the Ultumus story and to have supported Bernie and the team in their journey from pitchbook to leading market data pioneer.
“We wish them every future success and are excited to see how they develop as part of SIX in taking the business to the next level.”
ETFS Capital first invested in Ultumus in 2016 before adding further support in 2018.