NVIDIA be the largest company in the world by market cap on Oct 31 priced at 69.2% on Polymarket

NVIDIA odds retreat

Polymarket priced NVIDIA’s chances of being the world’s largest company by market capitalization on Oct 31 at 69.2%, according to the supplied Oct 17, 2026 · 7:39 PM ET market update. The probability fell 12.4 points, with $152K traded, placing the contract among the day’s largest downward finance moves.

The decline reduced confidence in the outcome, but the price still put NVIDIA above the 50% threshold. The figures describe a change in the prediction contract’s implied probability—not a percentage decline in NVIDIA’s market capitalization.

How the move is measured

According to predictionbubbles.net, its movers dashboard compares probabilities over 24 hours using prices from Polymarket and Kalshi, refreshing every 15 minutes. The supplied source lists a venue-data timestamp of 17 Oct 2026, 23:43 UTC.

The dashboard orders markets by the magnitude of their probability-point changes, regardless of direction. Trading volume and liquidity provide context but do not affect that ranking; only open contracts with a valid 24-hour comparison qualify.

The supplied material does not identify a catalyst for NVIDIA’s repricing or provide competing companies’ market capitalizations. It therefore supports a conclusion about shifting trader expectations, not an explanation of what drove them.

What it means for prediction markets

• Direction and level are distinct: The 12.4-point drop was substantial, while the remaining 69.2% price still favored a “yes” outcome.
• Volume is not market depth: The $152K traded adds activity context, but the supplied figures do not establish how much liquidity was available.
• The deadline matters: The contract concerns NVIDIA’s relative market-cap position on Oct 31, rather than its valuation in isolation.
• Repricing is not confirmation: The move records changed market expectations; it does not establish the eventual result or its cause.