Markets

Silicon chip designer Alphawave IP has announced plans to float on the London Stock Exchange in an IPO valuing the company at up to $4.5bn.
The food delivery company was expected to be one of the hottest listings of the year but has had a hard time mustering up gains since its initial public offering (IPO) announced in March.
Roland Head explains why he'd add National Grid shares to a passive income portfolio, given the group's growing exposure to renewable energy.