SINGAPORE - One of the market’s most popular ESG (environmental, social and governance) index providers says it will speed up its review of companies, after it failed to address allegations of poor governance at the Adani Group companies as quickly as its competitors.

MSCI will now review holdings in its ESG indexes on a monthly basis, more frequently than its previous quarterly schedule, the company said.

Any companies involved in significant ESG controversies, and those that do not comply with the principles outlined by the United Nations global compact, will be stripped from the indexes.

The change follows a delayed response to the Adani controversy that has left the market wondering about the lack of action from ESG’s most influential gatekeeper.

After short-seller Hindenburg Research accused the Indian conglomerate of fraud and market manipulation in January, ESG ratings companies and index providers have rushed to reassess Adani companies.

S&P Global said in February it would remove Adani Enterprises from its Dow Jones Sustainability Indexes.

Sustainalytics last week downgraded the ESG scores of several Adani companies.

MSCI has not updated its ratings of Adani Green Energy or Adani Total Gas since the Hindenburg report was released on Jan 24. Both are rated A, MSCI’s third-highest. The two are included in several of MSCI’s ESG indexes.

“If a company experiences a controversial issue that results in a significant loss of market value, investors need to be able to respond quickly,” said Dr Kelvin Law, an associate professor of accounting at Nanyang Technological University. “ESG ratings need to be responsive in real-time.” BLOOMBERG