Will Microsoft announce a new significant equity investment in OpenAI (exceeding $5 billion) or an acquisition of OpenAI before December 31, 2026?

Resolves YES if Microsoft or OpenAI issues an official press release or makes a regulatory filing (e.g., SEC filing) announcing a new equity investment by Microsoft in OpenAI that is explicitly stated to be greater than $5 billion USD, or an outright acquisition of OpenAI by Microsoft, before December 31, 2026, 23:59:00Z. This must be a new investment or acquisition, not a restatement or revaluation of existing stakes. Confirmation by major financial news outlets (e.g., Bloomberg, Wall Street Journal, Reuters) citing official sources will be accepted. Resolves NO otherwise.