The SMI Expanded is a capitalization-weighted

stock index In finance, a stock index, or stock market index, is an index that measures the performance of a stock market, or of a subset of a stock market. It helps investors compare current stock price levels with past prices to calculate market perform ...

of large-cap and mid-cap companies listed on the

SIX Swiss Exchange SIX Swiss Exchange (formerly SWX Swiss Exchange), based in Zürich, is Switzerland's principal stock exchange (the other being BX Swiss). SIX Swiss Exchange also trades other security (finance), securities such as Swiss government bonds and deriv ...

. It is made up of the components in the

Swiss Market Index The Swiss Market Index (SMI) is Switzerland's blue-chip stock market index, which makes it the most followed in the country. It is made up of 20 of the largest and most liquid Swiss Performance Index (SPI) stocks. As a price index, the SMI i ...

(SMI) and in the SMI MID, representing more than 90% of the total SPI market capitalization. It was created on November 15, 2004, and retroactively computed from January 3, 1996, with a calibration on 1,000 points as of December 31, 1999.

Current constituents

The current 50 constituents are the 20 large-cap companies listed on the Swiss Market Index (SMI) page and the 30 mid-caps listed on the

SMI MID The SMI MID (SMIM) is a stock index which lists Switzerland's mid-cap companies. The index is calculated by SIX Swiss Exchange. It includes the 30 Prime Standard shares from sectors that rank immediately below the companies included in the Swi ...

page.

Notes and references

Stock market Swiss stock market indices {{finance-stub