Merck & Co. and Moderna maintain a longstanding 50/50 profit- and cost-sharing collaboration on their personalized mRNA cancer vaccine intismeran autogene, recently bolstered by positive Phase 3 INTerpath-001 data released August 19, 2026, showing statistically significant improvements in recurrence-free and distant metastasis-free survival for high-risk melanoma. This outcome has reinforced the existing partnership structure without prompting merger discussions, as Merck pursues separate bolt-on acquisitions such as Terns Pharmaceuticals to diversify ahead of Keytruda patent expiration while Moderna advances its independent mRNA platform. Trader-implied odds near 99% for no 2026 announcement reflect the absence of deal rumors, aligned strategic incentives under the current equal-sharing arrangement, and mismatched corporate priorities. Tail risks remain limited to an unforeseen regulatory or competitive shock that could force a reevaluation of standalone strategies.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · Updated1% chance
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Dec 31, 2026
1% chance
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Dec 31, 2026
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. Otherwise, this market will resolve to "No".
A qualifying merger or acquisition must encompass both MRK and MRNA or their subsidiaries.
An announcement by MRK or MRNA within this market's timeframe will qualify for a "Yes" resolution, regardless of whether or when the announced acquisition/merger actually occurs.
A bid or offer announcement without the indication of a settled agreement will not qualify.
Announcements of partial sales may count, as long as the acquiring company announces the acquisition of a controlling interest in the other company. A "controlling interest" refers to a change in ownership sufficient to control the company's strategic decisions (typically more than 50% of equity, or equivalent control via voting and governance rights). Transactions or investments that do not result in a transfer of controlling interest will not count.
The primary resolution source for this market will be official information from MRK and MRNA; however, a consensus of credible reporting may also be used.Merck & Co. and Moderna maintain a longstanding 50/50 profit- and cost-sharing collaboration on their personalized mRNA cancer vaccine intismeran autogene, recently bolstered by positive Phase 3 INTerpath-001 data released August 19, 2026, showing statistically significant improvements in recurrence-free and distant metastasis-free survival for high-risk melanoma. This outcome has reinforced the existing partnership structure without prompting merger discussions, as Merck pursues separate bolt-on acquisitions such as Terns Pharmaceuticals to diversify ahead of Keytruda patent expiration while Moderna advances its independent mRNA platform. Trader-implied odds near 99% for no 2026 announcement reflect the absence of deal rumors, aligned strategic incentives under the current equal-sharing arrangement, and mismatched corporate priorities. Tail risks remain limited to an unforeseen regulatory or competitive shock that could force a reevaluation of standalone strategies.
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. Otherwise, this market will resolve to "No".
A qualifying merger or acquisition must encompass both MRK and MRNA or their subsidiaries.
An announcement by MRK or MRNA within this market's timeframe will qualify for a "Yes" resolution, regardless of whether or when the announced acquisition/merger actually occurs.
A bid or offer announcement without the indication of a settled agreement will not qualify.
Announcements of partial sales may count, as long as the acquiring company announces the acquisition of a controlling interest in the other company. A "controlling interest" refers to a change in ownership sufficient to control the company's strategic decisions (typically more than 50% of equity, or equivalent control via voting and governance rights). Transactions or investments that do not result in a transfer of controlling interest will not count.
The primary resolution source for this market will be official information from MRK and MRNA; however, a consensus of credible reporting may also be used.
A qualifying merger or acquisition must encompass both MRK and MRNA or their subsidiaries.
An announcement by MRK or MRNA within this market's timeframe will qualify for a "Yes" resolution, regardless of whether or when the announced acquisition/merger actually occurs.
A bid or offer announcement without the indication of a settled agreement will not qualify.
Announcements of partial sales may count, as long as the acquiring company announces the acquisition of a controlling interest in the other company. A "controlling interest" refers to a change in ownership sufficient to control the company's strategic decisions (typically more than 50% of equity, or equivalent control via voting and governance rights). Transactions or investments that do not result in a transfer of controlling interest will not count.
The primary resolution source for this market will be official information from MRK and MRNA; however, a consensus of credible reporting may also be used.
Market Opened: Aug 19, 2026, 3:58 PM ET
Volume
$425End Date
Dec 31, 2026Market Opened
Aug 19, 2026, 3:58 PM ETResolver
0x65070BE91...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. Otherwise, this market will resolve to "No".
A qualifying merger or acquisition must encompass both MRK and MRNA or their subsidiaries.
An announcement by MRK or MRNA within this market's timeframe will qualify for a "Yes" resolution, regardless of whether or when the announced acquisition/merger actually occurs.
A bid or offer announcement without the indication of a settled agreement will not qualify.
Announcements of partial sales may count, as long as the acquiring company announces the acquisition of a controlling interest in the other company. A "controlling interest" refers to a change in ownership sufficient to control the company's strategic decisions (typically more than 50% of equity, or equivalent control via voting and governance rights). Transactions or investments that do not result in a transfer of controlling interest will not count.
The primary resolution source for this market will be official information from MRK and MRNA; however, a consensus of credible reporting may also be used.Merck & Co. and Moderna maintain a longstanding 50/50 profit- and cost-sharing collaboration on their personalized mRNA cancer vaccine intismeran autogene, recently bolstered by positive Phase 3 INTerpath-001 data released August 19, 2026, showing statistically significant improvements in recurrence-free and distant metastasis-free survival for high-risk melanoma. This outcome has reinforced the existing partnership structure without prompting merger discussions, as Merck pursues separate bolt-on acquisitions such as Terns Pharmaceuticals to diversify ahead of Keytruda patent expiration while Moderna advances its independent mRNA platform. Trader-implied odds near 99% for no 2026 announcement reflect the absence of deal rumors, aligned strategic incentives under the current equal-sharing arrangement, and mismatched corporate priorities. Tail risks remain limited to an unforeseen regulatory or competitive shock that could force a reevaluation of standalone strategies.
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. Otherwise, this market will resolve to "No".
A qualifying merger or acquisition must encompass both MRK and MRNA or their subsidiaries.
An announcement by MRK or MRNA within this market's timeframe will qualify for a "Yes" resolution, regardless of whether or when the announced acquisition/merger actually occurs.
A bid or offer announcement without the indication of a settled agreement will not qualify.
Announcements of partial sales may count, as long as the acquiring company announces the acquisition of a controlling interest in the other company. A "controlling interest" refers to a change in ownership sufficient to control the company's strategic decisions (typically more than 50% of equity, or equivalent control via voting and governance rights). Transactions or investments that do not result in a transfer of controlling interest will not count.
The primary resolution source for this market will be official information from MRK and MRNA; however, a consensus of credible reporting may also be used.
A qualifying merger or acquisition must encompass both MRK and MRNA or their subsidiaries.
An announcement by MRK or MRNA within this market's timeframe will qualify for a "Yes" resolution, regardless of whether or when the announced acquisition/merger actually occurs.
A bid or offer announcement without the indication of a settled agreement will not qualify.
Announcements of partial sales may count, as long as the acquiring company announces the acquisition of a controlling interest in the other company. A "controlling interest" refers to a change in ownership sufficient to control the company's strategic decisions (typically more than 50% of equity, or equivalent control via voting and governance rights). Transactions or investments that do not result in a transfer of controlling interest will not count.
The primary resolution source for this market will be official information from MRK and MRNA; however, a consensus of credible reporting may also be used.
Volume
$425End Date
Dec 31, 2026Market Opened
Aug 19, 2026, 3:58 PM ETResolver
0x65070BE91...Merck & Co. and Moderna maintain a longstanding 50/50 profit- and cost-sharing collaboration on their personalized mRNA cancer vaccine intismeran autogene, recently bolstered by positive Phase 3 INTerpath-001 data released August 19, 2026, showing statistically significant improvements in recurrence-free and distant metastasis-free survival for high-risk melanoma. This outcome has reinforced the existing partnership structure without prompting merger discussions, as Merck pursues separate bolt-on acquisitions such as Terns Pharmaceuticals to diversify ahead of Keytruda patent expiration while Moderna advances its independent mRNA platform. Trader-implied odds near 99% for no 2026 announcement reflect the absence of deal rumors, aligned strategic incentives under the current equal-sharing arrangement, and mismatched corporate priorities. Tail risks remain limited to an unforeseen regulatory or competitive shock that could force a reevaluation of standalone strategies.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · Updated
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