Trading activity across SIX Swiss Exchange and BME Exchange surged in September 2026, with combined turnover climbing 33.8% month-over-month to reach CHF 168.5 billion, while transaction volumes rose 17.6% to 8.19 million, signaling robust market momentum as traders exited the quieter summer period.
- SIX Swiss Exchange turnover: CHF 111.9 bn (up 28.2% MOM, 30.3% YOY)
- BME Exchange turnover: EUR 59.9 bn (up 45.4% MOM)
- Transaction volume increase: 17.6% to 8,190,386 transactions
- SMI index: 13,830.3 points (down 3.2% MOM, up 4.2% YTD)
- IBEX 35 index: 19,426.0 points (down 2.7% MOM, up 12.2% YTD)
Equities drove the strongest performance on the Swiss platform, climbing 33.8% month-on-month and 30.3% year-over-year. At BME Exchange, securitized derivatives and fixed income segments led the rally, with derivative turnover nearly doubling at 94.7% and bond trading jumping 92.4% compared to August.
Despite the gains in trading activity, both benchmark indices retreated during the month. The Swiss blue chip SMI declined 3.2% to 13,830.3 points, though it remains up 4.2% year-to-date. Spain’s IBEX 35 fell 2.7% to 19,426.0 points but has delivered a 12.2% return so far in 2026.
SIX also unveiled SIX Market Signal in September, a new data marketplace designed to improve retail and institutional traders’ access to real-time exchange data from SIX Swiss Exchange, BME Exchange, and Aquis Exchange.
As markets have moved out of the quieter summer period, it’s positive to see cross-market turnover growth on both SIX Swiss Exchange and BME Exchange. The launch of SIX Market Signal underscores another key milestone in removing accessibility and affordability barriers to high-quality exchange data in Europe. In the long term, this will help increase trading both across SIX markets and European markets as a whole.
– Gregor Braun, Head Cash Market Sales, Exchanges, SIX
SIX operates cash markets and derivative exchanges across Switzerland and Spain, providing trading, clearing, and settlement infrastructure for equities, bonds, and derivatives.
