Peter Brown: AI-driven big tech stocks are ridiculously over valued and are set for a slide

The market loves a trend and this one has run its course. Picture: AP

The US tech-heavy Nasdaq index has climbed 27% since the start of the year and the broader S&P 500 is up 15%.

However, the same seven stocks are driving both indices: Apple; Microsoft; Google-owner Alphabet; Amazon; Nvidia; Tesla; and Facebook-owner Meta.