Here is the best list I have found. The developer that owns the web site listed below updates the entire database including groups and markets.
1. Complete Symbol download for AMIBroker including Groups. It appears it is updated each day. http://www.icc-az.com/icc-az/default.html?http%3A//www.icc-az.com/icc- az/ 2. Symbol List for NAS 100 http://www.equis.com/customer/support/download/Symbols.aspx 3. Symbol List for SP 500 http://biz.swcp.com/stocks/
