NVIDIA's commanding 87.5% implied probability of finishing June as the world's largest company by market cap stems from its unmatched position supplying GPUs that power the explosive growth in artificial intelligence training and inference. The chipmaker recently became the first firm to surpass $5.5 trillion in valuation, fueled by accelerating AI capital expenditures from hyperscalers and fresh analyst upgrades projecting further gains. Alphabet trails at 11.2% amid solid cloud and search performance but lacks NVIDIA's direct exposure to the AI hardware boom, while Apple, Microsoft, and others sit below 2% each with limited near-term catalysts to close the gap. Traders are pricing in sustained momentum through earnings season and continued model releases, though supply constraints or regulatory shifts on export controls could still alter trajectories before the end of June.