The CAC Small is a stock market index used by the Paris Bourse. It is a small-cap index which represents all main-market French equities not included in the CAC 40, the CAC Next 20 or the CAC Mid 60. Together, these 4 indices make up the CAC All-Tradable. Originally consisting of 90 listings, the index was revamped to include a wider range of stocks in March 2011.Wikipedia