The SIX SIS AG is a private company which forms part of the SIX Group. The company operates the central securities depository of the SIX Swiss Exchange and the SECOM electronic trading system.

SIX SIS AGs central securities depository is equipped to manage the safekeeping of securities and the settlement of transactions between around 50 countries in addition to Switzerland. It has direct access to a number of central securities depositories throughout Europe, including Euroclear UK & Ireland, Clearstream Banking Frankfurt, Clearstream Banking Luxembourg, ICSD Euroclear Brussels, ESES markets, VP Securities Denmark, OeKB and KELER.

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