Is China Merchants Cigna a listed company?

It's a listed company.

According to the survey data of Tianyan, China Merchants Cigna is an insurance company under China Merchants Bank. Cigna Insurance Company is one of the oldest and largest insurance companies in the United States. It is an American listed company and one of the top 500 enterprises in the world.

China Merchants Cigna is a Sino-US joint venture life insurance company featuring medical insurance.