Here is a list of the 6 largest financial services companies with investment banking operations headquartered in London and New York by market capitalisation.
1. HSBC, London - $173.5bn / £111.325bn
2. JP Morgan Chase - New York City - $147.27bn / £94.5bn
3. Citigroup, New York City - $108.65bn / $69.7bn
4. Goldman Sachs, New York City - $76.434bn / £49.044bn
5. Barclays, London - $59.6bn / £38.23bn
6. Morgan Stanley, New York City - $36.21bn / £23.23bn