
Chart and changes show stored historical probabilities, not the selected live book.
Trends
Selected row: book midpoint. Other rows: stored references, possibly normalized; 24h changes use stored history.
Venue terms
Source: Polymarket
Informational venue terms only; CoinRithm paper trading uses its own rules.
Market depth · No
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Related Markets
Related questions for context, not a comparison of equivalent contracts.
MPS x Intesa Sanpaolo merger/acquisition announced in 2026?
T-Mobile US & SpaceX merger/acquisition announced in 2026?
Trump Media x TAE Technologies merger closed by July 31?
Will Virginia regulators approve the Dominion-NextEra merger?
Will Western Digital and Kioxia complete merger before 2027?
Will Trump announce an acquisition of part of the Chagos Islands before 2027?
Rules
This market will resolve to "Yes" if it is officially announced that Merck & Co. (MRK) will be, has been, or is being acquired by or merged with Moderna (MRNA), or vice versa, by December 31, 2026, 11:59 PM ET.
Free JSON for this market, no API key needed:
https://api.coinrithm.com/api/prediction-markets/events/polymarket/merck-moderna-mergeracquisition-announced-in-2026AI agents: call pm_data_event on the CoinRithm MCP server:
https://mcp.coinrithm.com/mcp+3 more outcomes
+7 more outcomes
+9 more outcomes
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+9 more outcomes