There is a way to time the market

[FFNow]

P/E can be used to move in and out of STI ETF instead of a buy-and-hold strategy. The same can't be said for individual companies. During a recession, one can look into P/B as P/E will be inflated.

[safetyfirst]

can anyone share how we can DIY this calculation ourselves at home?

why is it that in a low interest environment, the earnings seems not as impressive as it seems?

when interest rate is low, company's expense on paying interest drops, so earnings will be artifically inflated.

DIY will be too troublesome imo, can always look for such ratios online