London needed a win. Instead it got its worst IPO in history At first glance, Deliveroo’s stock market debut should have been a runaway success. The food delivery startup was a darling of the UK tech scene, and growing fast thanks to surging demand during the pandemic. Amazon recently bought 16% of the company in a major vote of confidence. But London’s biggest IPO since 2011 was an unmitigated disaster. The stock plunged when trading started on Wednesday, and the shares eventually closed 26% below their listing price, wiping almost £2 billion ($2.8 billion) off Deliveroo’s initial market capitalization. The stock lost another 1.9% on Thursday.