Because markets have been choppy over the past few months, Swiss-based Trader Serge Berger, also known as "The Steady Trader”, thinks investors have started to lose interest in tech and biotech from an investment point of view. But he explains both sectors are worthy of re-examination.

Serge uses IBB – the Nasdaq biotech ETF – as an example. It has stabilised "quiet well", and as a result he reckons that relative strength in the biotech sector is "something that can be played to the upside".

And when it comes to tech stocks, the picture is similar according to Serge, in particular for the social media stocks. He is seeing a "lot of relative strength" and adds the S&P 500 technology index has broken up to new highs over the past few days, meaning it's an area worth keeping an eye on.