Abu Dhabi-based sovereign firm Mubadala has become the latest investor in Mukesh Ambani’s Reliance Jio Platforms, joining five American firms including Facebook and Silver Lake that have secured stakes in India’s biggest telecom operator at the height of a once-in-a-century global pandemic.

Mubadala said it had agreed to invest $1.2 billion in Reliance Jio Platforms for a 1.85% stake in the firm.

A subsidiary of Reliance Industries, the most valued firm in India whose core businesses are in oil refining and petrochemicals, Reliance Jio Platforms has raised $11.5 billion by selling 19% stake in the last seven weeks.