Nvidia deployed $18.6B in venture investments in one quarter, with nonmarketable equity securities surging to $42.3B as it finances the AI ecosystem it supplies.

Nvidia's soaring revenue highlights the escalating demand for AI infrastructure, raising questions about sustainability and geopolitical risks.

Chip giant Nvidia on Wednesday posted record quarterly revenue of $81.6 billion, blowing past Wall Street forecasts as insatiable demand for its artificial intelligence hardware…