The investment banks generate revenues through various efforts. In general they provide advisory services to clients - corporate entities, sovereigns, governments, other financial institutions. These advisory services generally focus on corporate finance - mergers & acquisitions, as well as raising debt and equity for clients. For example, through the issuance of debt, bonds and loans are created (securities) and then traded with the market.
On the capital markets side of the banks - sales, trading, research, etc. - these securities are then traded with financial institutions, such as asset managers, pension funds, insurance companies, foundations, family offices, etc. Securities are then traded on an ongoing basis depending on clients' investment appetite - the banks will take a small cut on any transaction. The banks perform loads of other services for clients too - prime brokerage, risk solutions, trade finance, etc. A simple way to look it at is this:
The investment banks aren't fully allowed to trade their own capital anymore, known as prop trading - as a result of the financial crisis - however a number of them have set up merchant banking/private capital teams which will generate higher returns through riskier lending activities. Also, they've been active in setting up/expanding their own investment management arms to compete with the rest of the market. The revenues generated by investment banks in London has dropped over the years through restriction of activities, but it's probably worth noting the additional revenue they generate through employee income tax/national insurance, as well as all the other industries that support banking - legal, IT, accounting, etc.
The other financial institutions in the City/West End generate revenue through management and performance fees on the assets they advise on.
On the capital markets side of the banks - sales, trading, research, etc. - these securities are then traded with financial institutions, such as asset managers, pension funds, insurance companies, foundations, family offices, etc. Securities are then traded on an ongoing basis depending on clients' investment appetite - the banks will take a small cut on any transaction. The banks perform loads of other services for clients too - prime brokerage, risk solutions, trade finance, etc. A simple way to look it at is this:
- The banks (and brokers) are called the "sell side" as they create the financial products before selling them to other financial institutions.
- The buyers of those financial products (pension funds, asset managers, insurance companies, private equity funds, hedge funds, etc.) are called the "buy side" as they purchase assets.
The investment banks aren't fully allowed to trade their own capital anymore, known as prop trading - as a result of the financial crisis - however a number of them have set up merchant banking/private capital teams which will generate higher returns through riskier lending activities. Also, they've been active in setting up/expanding their own investment management arms to compete with the rest of the market. The revenues generated by investment banks in London has dropped over the years through restriction of activities, but it's probably worth noting the additional revenue they generate through employee income tax/national insurance, as well as all the other industries that support banking - legal, IT, accounting, etc.
The other financial institutions in the City/West End generate revenue through management and performance fees on the assets they advise on.