Some information is now available on the website of the SPDR Straits Times Index ETF.
I do get questions from time to time on when is a good time to purchase the STI ETF. You can click on this link to access the official website for the SPDR STI ETF.
On the website, you can refer to some information on this ETF under the fund characteristics section.
We are looking for a ratio as low as possible since this essentially means that the lower the P/E ratio, the lesser the number of years it takes for the earnings to pay back the purchase price.
If you do a search on STI P/E chart, you can easily glean information online such as the charts below.