SIX Digital Exchange’s (SDX) head David Newns is set to step down from his role after almost four years with the firm.
Newns, who is based in Zurich, initially joined SDX in October 2021 with a mandate to take the exchange into its next phase of full operations and growth.
During his time at SDX, the exchange achieved many industry ‘firsts’, including digital bond issuance on a fully regulated financial market infrastructure (FMI), and interoperability between digital and traditional FMI.
Additionally, in March 2025, SIX announced that it had integrated SDX into its Securities Services business to centralise digital bond trading and other digital assets onto the exchange’s infrastructure, effective 1 June.
Speaking in an announcement on social media, Newns said: “Together, we have achieved so much and led the way for our industry. As I stand here in 2025, the future for digital assets has never looked brighter. Having fully incorporated SDX into SIX Securities Services under Bjørn Sibbern and Rafael Moral Santiago’s leadership, the next phase in digital enablement at SIX Group is already underway!”
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Before joining SDX, Newns previously spent more than 15 years at State Street in various different roles, such as global head of GlobalLink Execution Services, overseeing the bank’s FX electronic trading platforms.
Prior to this, he also served in roles as chief operating officer and senior manager for eExchange, State Street Global Markets, before later becoming the global head of Currenex from 2014 to 2017.
He originally joined Currenex in 2001, serving as a founding member of the firm’s London operation.
Newns is also currently a member on the AsiaNext board of directors.
Speaking on the departure, a spokesperson for SIX said: “We wish him [Newns] the best for his future career and thank him for his fantastic work with SIX during the last years.”