SIX has appointed Aquis Technologies as the technology provider for its forthcoming harmonised trading platform.
The new system will bring together all exchanges operated by the group, including SIX Swiss Exchange and Bolsas y Mercados Españoles (BME), onto a shared infrastructure. 
The project will establish a single trading framework designed to offer clients a unified connection point across multiple venues, with the goal of simplifying access, supporting interoperability, and improving liquidity.
David Stevens, CEO, Aquis, said: “The decision by SIX – one of Europe’s largest exchange groups – to use Aquis’ technology only reinforces the strength and capability of the Aquis matching engine and related services. Alongside our work to build an industry-leading harmonised platform for SIX exchanges, we are excited to continue expanding our technology offering and client base in the coming years.”
The exchanges will operate on the Aquis Equinox matching engine, a system currently supporting several global trading venues.
The technology is known for its low latency and continuous uptime and will form the foundation of SIX’s planned pan-European trading environment, which aims to provide harmonised access across its markets.
Tomas Kindler, global head exchanges & executive board member, SIX, said: “Harmonising all our platforms through Aquis’ cutting-edge, regulatory grade technology represents a major technological milestone for SIX and a defining leap in our evolution as a pan European exchange innovator.
Kindler added: “With the concept of ‘One Plug, Multiple Trading Venues’, our existing participants in the Swiss and Spanish markets will be able to benefit from a next-gen trading system, delivering innovation, new functionalities and unrivalled access to investment opportunities in multiple markets with just one harmonised connection standard to our multiple trading platforms.”
“This harmonisation will significantly reduce operational complexity and provide our participants with the best possible trading experience and access to services via some of the most advanced trading technology available today,” said Kindler.
According to the firms, the new platform for equity and equity-like products is expected to launch in 2027, with additional asset classes to follow.
SIX said it is working closely with regulatory authorities to secure the necessary approvals ahead of implementation.
Aquis was selected following a multi-stage evaluation process involving several vendors, and joint development work is already underway.