STI Index is Straits Times Index
The Straits Times Index (STI) is a market capitalisation weighted index that tracks the performance of the top 30 companies listed on SGX. It is jointly calculated by Singapore Press Holdings (SPH), Singapore Exchange (SGX) and FTSE Group (FTSE).
What this mean is when you buy ETF shares of this Index, you have exposure to this 30 companies. Below table obtained from SG Investor link here.
The Index regularly updated with new companies which replaced some companies in the index. Recent times, the Index has not been doing well. One of the reason I feel is lack of Tech stocks that we see in NASDAQ while Covid-19 do it’s work on traditional companies. Another reason is that the process of company selection is not as fast as I feel it should. For example strong Reits