St Paul and Travelers Property Casualty have merged to form the world's second biggest commercial insurer.
The company will be known as the St Paul Travelers Companies
The combined company will be a leading provider of property casualty insurance products distributed through independent agents and brokers and one of the largest financial services companies in the US.
It is expected to have total assets of $107bn, shareholders' equity of $20bn, total capital of $26bn and net written premiums of $20bn.