How past tech floats fared, and upcoming IPOs in London

Even Facebook and Google had their troubles when they first went public, so Deliveroo’s bad experience is far from uniqueAmazon listed on the Nasdaq at $18 a share with a market value of $438m in 1997, when it was just an online bookseller, with 256 employees. The share price rose gradually over the years, but started to rocket in 2015 after the firm posted substantial profits. Three years later, it became the world’s second trillion-dollar company, just weeks after Apple reached tha