The Children's Investment Fund Management Ltd., the U.K.-based activist fund with more than $10 billion (¥1.1 trillion) in assets, said it won't let Japanese companies stymie its efforts to boost shareholder value.

"This wave of demanding better governance is new and it hasn't yet been proven to work on the surface," Hong Kong-based John Ho, head of Asia-Pacific operations of the fund also known as TCI, said in an interview in Tokyo.

"We'll do it our way, which is active engagement, logic and analysis, and that stands the best chance to show Japanese people we're right, that we should be welcomed and encouraged."