I mentioned in this piece that I should get around to looking at the original versus current components of the S&P/ASX 200 just to get a sense of index turnover. As a prelude to this I cobbled together a rough first look at the S&P/ASX 50 to see how much what I would consider to be a fairly stable index turns over. Those cells coloured in orange are original components that do not appear in the current index for whatever reason and those in yellow are common to both the original and current index.. This is a quick effort so I am bound to have missed something but if you needed proof of concept that indices turnover a great deal then this does give you a good idea of how much things change.
Wow !