NVIDIA holds an 89.2% implied probability of ending September as the largest company by market cap, driven by its commanding lead in AI accelerators and data-center revenue that reached roughly 92% of recent quarterly sales. As of mid-September 2026, its valuation sits near $5.1 trillion, well ahead of Apple at approximately $4.8–4.9 trillion and Alphabet near $4.2 trillion, reflecting sustained demand from hyperscalers despite short-term volatility tied to calls for slower frontier-model development. With only two weeks remaining, limited room exists for meaningful shifts absent major order cancellations or regulatory shocks. Lower-probability outcomes such as Apple reflect its services growth but narrower AI exposure, while names like Microsoft, Amazon, and Tesla trail further behind on current capitalization and momentum. Trader consensus, backed by real capital, treats NVIDIA’s position as durable through month-end.