SIX Exchanges Figures: May 2026

SIX saw strong listing activity across its primary markets in May. The IPO of engineering firm TSK on BME’s main market on 13 May was heavily oversubscribed. Andino, a Peruvian logistics company listed on BME Growth on 20 May becoming the first Latin American firm to join the Spanish SME market.

On 21 May, dsm-firmenich established a dual listing on SIX Swiss Exchange and was included in the SPI and SPI Extra indices upon joining the Swiss market. Based on an opening price of CHF 62.80 per share, the company’s market capitalization stood at CHF 15.9 billion and the stock saw trading volumes of approximately CHF 800 million on the first day of trading.

Alongside new company listings, the exchanges of SIX enabled further capital raising via Accelerated Bookbuild offerings. ACS and Naturgy in Spain were the two largest in Europe in May with a combined volume of over EUR 5 billion, demonstrating the depth of the market.

Furthermore, BME ’s fixed-income market AIAF registered the repatriation of a bond issuer from other international markets. Banco de Sabadell’s Euro Medium Term Note (EMTN) program with a maximum nominal amount of EUR 20 billion was admitted to trading in May. 

Trading activity at SIX was strong across multiple asset classes, with total turnover growing 10.8% in May 2026 compared to the same month last year. Across both SIX Swiss Exchange and BME, combined activity reached CHF 144.5 bn with 7,578,406 transactions (+10.7% YOY).

On BME, trading in fixed income surged in May, with turnover up 74.2% compared to last year. On SIX Swiss Exchange, turnover was bolstered by strong volumes in ETFs, which was up 16.4% and structured products, up 16.3% compared to May last year.

The benchmark indices in both markets were up, with the Swiss SMI rising 3.1% to 13,542.7 points and the Spanish IBEX 35 up 3.3% to 18,363.0 points compared to April.

Juan Flames, CEO BME and Head Primary Markets, SIX, commented: “Geopolitical uncertainty may shape the global backdrop, but capital markets continue to deliver – as shown by successful listings across the exchanges of SIX in Switzerland and Spain in May 2026, highlighting how these markets are able to meet sustained demand for capital and support European companies‘ growth ambitions.”

Detailed statistics on turnover and transaction volumes per segment compared with the previous month and previous year, on newly listed products and on the development of the most important indices can be found in the tables below. The website of SIX Swiss Exchange provides you with full access to our complete information offering. We provide you with the latest market data and comprehensive statistics for our entire securities universe. This includes order book information, prices, volumes and turnover figures as well as historical data and statistics. We also provide official notices of listed companies, management transactions and other relevant information to ensure safe and transparent trading. Discover more.