Historical data doesn’t support getting out of the market from May to October

The best forecasts are characterised by humility rather than certainty

Investment strategists concerned by Trump’s unpredictable trade policy

The tech advance has been led by companies with some eye-watering valuation multiples

A record number of companies have issued upward earnings guidance, according to FactSet data

Stocktake: Facebook stock down $60bn over Cambridge Analytica’s revelations

Proinsias O’Mahony: Seven nerve-calming steps to help you make sense of it all

Stocktake: Investors are still jumping in as FOMO trumps worry of losing money

Stock markets have been volatile of late, many indices suffering double-digit corrections before swiftly rebounding. Is more turmoil ahead, or is volatility likely to be short-lived?