SIX Swiss Exchange concludes upgrade of its trading platform

SIX Swiss Exchange has successfully completed the upgrade of its X-stream INET trading
platform. Alongside forward-looking improvements in performance and
capacity, the stability of response times has been raised to a world-leading level. This means
that market participants have even more reliable information on whether their orders have been
executed, enabling them to act accordingly. This improvement plays a key part in fostering
stable and orderly exchange trading.

Thanks to the upgrade, 99.9% of orders submitted will receive a response within 29 microseconds.
Active stock exchange trading will therefore become even more reliable for participants, especially in
markets featuring exceptionally high volatility, as they will have precise information about the status of
their orders. This will contribute to higher-quality pricing, especially in choppy markets, giving market
players and investors a tangible advantage.