Cotation Assistée en Continu (CAC) was an electronic trading system used at the Paris Bourse, the French stock exchange, in the 1980s and 1990s. It was introduced in 1986 for trading less liquid equities, and in 1989 it was operational for all listed stocks. The acronym is also used to refer to the CAC 40, a stock index provided by the Paris Bour...