RNA (Regulatory News Announcements) refers to regulatory information published by companies and organisations allowing them to comply with local market transparency legislation. RNS (Regulatory News Service) transmits regulatory and non-regulatory information published by companies and organisations allowing them to comply with local market transparency legislation. It is owned by the London Stock Exchange and distributes over 90% of UK company news and results announcements. This is a useful tool for investor in order to track investments and gain timely and comprehensive updates generated by the companies themselves.