Shares in Deliveroo closed down 26.3% on its first day of trading on the London Stock Exchange, having earlier seen falls of 30% during its highly-anticipated launch.
Around £2bn was wiped off the value of the takeaway delivery firm as City traders balked at the flotation.
By the close of trading shares had fallen from 390p to 287.45p – a fall of 102.55p.
The company opened trading below 270p per share, having said it would launch its shares as a publicly-listed firm at 390p earlier on Wednesday morning.
Prior to trading, Deliveroo had also confirmed that it would be valued at around £7.6bn, at the bottom of its previously announced range of between £7.6bn and £8.8bn.
However, this sank sharply from 8am yesterday, as City analysts raised further concerns about the business.
The cold opening to trading, which did not recover, came after a number of leading UK fund managers said they would reject the listing amid concerns over workers’ rights issues and its shareholder structure.
Danni Hewson, financial analyst at AJ Bell, said: “Anyone thinking Deliveroo might rise phoenix like from the flames at the end of its first day of trading will be sorely disappointed.”
She added: “Deliveroo is not the first company to experience a rocky start – Uber stocks fell more than 7% on its debut but, if you’d kept your nerve, you’d be up 20% today.”
The company said it would raise around £1bn through selling shares to new investors, with a further £500m worth of shares to be sold to existing backers.
Deliveroo said it plans to invest the funds into continuing its growth trajectory and fuelling its innovation efforts.
Will Shu, founder and chief executive, said: “In this next phase of our journey as a public company we will continue to invest in the innovations that help restaurants and grocers to grow their businesses, to bring customers more choice than ever before, and to provide riders with more work.
“Our aim is to build the definitive online food company and we’re very excited about the future ahead.”
Last week, some of the UK’s largest fund managers, including Legal & General and Aviva, said they would reject the flotation, highlighting issues related to its business model, workers’ rights and regulatory concerns.
Firms have also raised concerns over the share structure, which will see Shu have 20 votes per share, compared with one per share for other investors, giving him a majority position at shareholder votes.
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