SPI Companies

Base date

The SPI has been calculated since 1 June 1987. On this date (basis date), the index level was set to 1000 points.

Consideration of dividends

The SPI is a dividend-adjusted share index (total return index). This means that dividend payments are taken into account in the development of the index. For each dividend payment, the divisor of the index is adjusted. – There is also a non-dividend-corrected variant (price index) of the SPI.

Title universe

The SPI comprises, according to the SPI Index Rules, all share classes which are primarily listed on the SIX Swiss Exchange, but with two exceptions:

– Equity securities with a freely tradeable share (free float) of less than 20% are not included in the SPI due to their limited liquidity (tradability).
– Investment companies are not included in the SPI to avoid double counting. Only if an investment company exclusively invests in non-SIX companies listed on the SIX, it may be admitted to the SPI at its own request.

As a matter of principle, only company titles from Swiss companies with legal domicile in Switzerland or the Principality of Liechtenstein are included in the SPI. Upon request, a primary listing company domiciled outside Switzerland may be included if it fulfills certain conditions with respect to the reporting obligations under the stock exchange laws.