Entities rated by MSCI ESG Research include Adani Green Energy, Adani Power, Adani Total Gas, Adani Transmission and Adani Enterprises, according to the statement.
This week, MSCI ESG Research flagged all its covered Adani Group entities for the metric of accounting investigations, while some were flagged for the securities valuations metric, it said.
"Across various Adani Group entities, MSCI ESG Research has identified issues relating to governance, board independence, related party transactions, and controlling shareholders," the company said.
Since the short-seller report release, MSCI ESG Research has added "Bribery and Fraud" and "Governance Structures" controversy cases to all Adani Group companies in its coverage, it said.
Sustainability ratings company Sustainalytics downgraded corporate governance-related scores for some Adani Group companies last month.