London is used to punching well above its weight in global financial markets.
For years, the London Stock Exchange attracted an outsized share of investor capital relative to the size of the UK economy, reflecting the international nature of its listed companies.
In 2000, UK-listed equities made up 11% of the MSCI World Index — which tracks more than 1,500 companies that account for the vast majority of the global stock market by value — according to Citigroup. Fast-forward 23 years and the UK market now represents just 4%, the bank’s chief global equity strategist wrote in the Financial Times.
Source : Companies leaving for Wall Street: London’s future in question