This event group determines which company will have the largest market capitalization globally as of market close on May 31, 2026. Both platforms offer binary markets on specific named companies (Apple, Microsoft, NVIDIA, Tesla, Amazon, Alphabet, Broadcom, Saudi Aramco) plus generic placeholder companies (A through T) and an 'any other' catch-all option. The resolution hinges on a single factual determination: the identity of the world's largest company by market cap on a specific date.
Unified Resolution Criteria (Consistent across platforms)
Both Polymarket and Predict apply identical resolution criteria: largest company by market cap on May 31, 2026, resolved via consensus of credible reporting, with no platform-specific exclusions, timing variations, or source conflicts.
Primary resolution logic:
Consensus of credible reporting on global market capitalization rankings as of May 31, 2026 market close
Core resolution logic:
Identify the company with the highest market capitalization globally as of market close on May 31, 2026
Use consensus of credible financial reporting sources (e.g., Bloomberg, Reuters, Yahoo Finance, major financial news outlets) to establish the ranking
Exactly one binary market (either a named company or 'any other') will resolve YES; all others resolve NO
Market cap is calculated as share price multiplied by fully diluted shares outstanding as of the close of trading on May 31, 2026
If multiple companies tie for largest market cap, resolution follows the consensus determination by credible reporting sources
Edge cases & Clarifications:
Tie between two companies: If two or more companies have identical market capitalizations at close on May 31, 2026, the consensus of credible reporting sources will determine which is reported as 'largest'; that company's market resolves YES
Market suspension or delisting: If a company is suspended from trading or delisted before May 31, 2026, it cannot be the largest company; credible reporting will reflect the next-largest company
Generic placeholder companies: Polymarket includes generic company labels (A, B, C, etc.) which serve as catch-all categories; these resolve YES only if a company not explicitly named resolves as largest
Any other resolution: The 'any other company' option on Polymarket resolves YES if the largest company is neither Apple, Microsoft, NVIDIA, Tesla, Amazon, Alphabet, Broadcom, Saudi Aramco, nor any of the named generic placeholders
Timing:
Resolution occurs after market close on May 31, 2026, using end-of-day market capitalization data and consensus credible reporting published on or immediately after that date
Our PredictionHero Resolution Divergence Alerts (RDA) are there to help users identify potential differences across platforms. They do not replace or supersede the official rules and description of any prediction market. Users are solely responsible for reviewing and understanding the applicable rules and resolution criteria before placing any trade or bet. If you notice a potential inconsistency, discrepancy, or error in an alert, please report it to our team so we can review and improve the accuracy of our data.
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