StarRage24 Jul 2019 14:23
You have answered what an extension is but not the bog standard RNS. This stands for regulatory news service and is important but not necessarily ground breaking. This case is of a technical nature. RNS may or may not be automatically generated and can include such things as a major interest or reduction thereof in a company. I recommend to Flashash getting a book or booklet on the stockmarket . If you are an investor worth knowing how it all works.