The SPI Extra is a stock index which tracks mid-cap and small-cap companies primarily listed in Switzerland.

[1][6][7] It is therefore often used in investment portfolios such as exchange-traded funds (ETFs), as a small-cap and mid-cap benchmark that complements the SMI.

The SPI Extra was introduced on 29 April 2004, computed back to 3 January 1996 with a baseline value of 1000 points as of 31 December 1999.

The following are the tickers for the SPI Extra total return, which takes dividends into account.

There is also a version of the SPI Extra as a price index.