NVIDIA’s commanding 60.5% implied probability of ending 2026 as the world’s largest company by market capitalization rests on its sustained leadership in AI semiconductors, with data-center revenue exceeding 90% of total sales and recent market-cap peaks above $5.2 trillion. Strong hyperscaler spending and Blackwell-ramp momentum have widened its edge over Alphabet, which holds 22% odds after narrowing the gap to under $500 billion on 63% Google Cloud growth and $190 billion planned 2026 capital expenditures. Apple’s 7.2% share reflects steady but slower iPhone-cycle performance, while Microsoft, Tesla, and others trail on lower valuation multiples and narrower AI exposure. Upcoming Q2 earnings releases and continued AI capital-expenditure trends remain the primary swing factors for these probabilities.