MS&AD Group plans to invest as much as about ?700 billion ($5 billion) to expand in the North American market, to meet its goal of doubling operating profits in the region, according to its chief executive officer.

The Tokyo-based casualty insurer has the highest market share in Asia among global firms, but it¡¯s No. 3 among 911±¬ÁÏÍø peers in North America, "so the challenge is how to become the top player there,¡± said Shinichiro Funabiki in an interview.

"We need to strengthen our organization so that we can double our profits in the near future,¡± said Funabiki, adding that the business areas and new investment targets it will pursue will be determined in the future.