As of 31 December 2007[update], the Osaka Securities Exchange had 477 listed companies with a combined market capitalization of $212 billion.

The OSE is the leading Derivatives Exchange in Japan and it was the largest futures market in the world in 1990 and 1991.

Each prefecture set up its own warehouses in Osaka for shipping & preservation of their rice (to be taxed by the government), and sold to merchants.

In September 2007 OSE established evening session for Stock Index Futures and Options.The trading hours is from 16:30 to 19:00 (JST (7:30-10:00 in UTC).

[3] In July 2012 a planned merger with the Tokyo Stock Exchange was approved by the Japan Fair Trade Commission.