MSCI Inc's stock plummeted 5.16% during intraday trading on Tuesday, as investors reacted to uncertainty surrounding the index provider's discussions with Indonesian officials regarding market transparency concerns.

The decline follows MSCI's statement that it would not comment on individual discussions, issued after meetings with Indonesian regulators to address transparency issues that have previously roiled the Indonesian stock market. Market participants appear concerned about potential regulatory risks and the impact on MSCI's business relationships in emerging markets.

As a leading global index provider, MSCI's assessments and engagements with market regulators carry significant weight for international investors. The company's non-committal stance on the Indonesia discussions has created uncertainty about the outcome and potential implications for MSCI's index governance processes.