
Yes is at 61%, down 12 points from 72.5% when the market opened on 20 Aug 2026.
Across the 69 daily closes on record from 20 Aug 2026 to 30 Oct 2026 (4 days in that span have no close), the highest close was 72.5% on 20 Aug 2026 and the lowest 55.5% on 25 Sep 2026. A week before that last close Yes was at 64.5%; a month before, 66.5%. Its largest one-day move was 10 points down, to 55.5% on 25 Sep 2026.
It is one of 3 markets under “FDA approves skin cancer vaccine by...?”.
$4.48K traded in the last 24 hours, out of $173.37K since listing. The order book holds $12.97K, with a 2.0% gap between the best bid and the best ask. Across the latest 500 trades, $4.15K bought Yes and $11.19K bought No; the largest was a $3.13K sell of No at 38.9¢.
The largest Yes position is Brokie with 15K shares; the largest No position is AllByMyseIf with 7K. Ten wallets hold 83.6% of the shares on Polymarket's public holder list.
Trading closes on 1 Jan 2028.
Polymarket prices as of Oct 30, 2:19 PM UTC
Daily closes of the Yes price, Polymarket CLOB, 69 points, 20 Aug 2026 – 30 Oct 2026, chart shows 50%–80%
| Observed | Yes price |
|---|---|
| 20 Aug 2026 | 72.5% |
| 30 Oct 2026 | 61.0% |
The ten largest positions on Polymarket's public holder list.
| Trader | Outcome | Shares |
|---|---|---|
| Brokie | Yes | 15K |
| AllByMyseIf | No | 7.01K |
| 0x49F206 | No | 3.74K |
This market will resolve to "Yes" if the U.S. Food and Drug Administration (FDA) grants approval of intismeran autogene for any indication by December 31, 2027, 11:59 PM ET. Otherwise, this market will resolve to "No". Intismeran autogene refers to the individualized neoantigen therapy developed by Moderna and Merck and evaluated in the Phase 3 INTerpath-001 trial (NCT05933577), also known as mRNA-4157 and V940, together with any brand, trade, or nonproprietary name later assigned to that product, as well as any renamed or modified version that the relevant company or the FDA identify as the same product or a direct continuation of the V940/mRNA-4157 program. Differences in neoantigen composition between patients will not affect resolution. Changes to the product's formulation will not affect resolution, provided the FDA approves the product described above. Approval as part of a combination regimen will qualify. Approval for a narrower population than the one studied in INTerpath-001 will qualify. Approval for an indication other than melanoma will also qualify. Both standard and accelerated approval will qualify. An approval is defined as: For new drugs: FDA issuance of an approval letter for a New Drug Application (NDA) or Biologics License Application (BLA) For already-marketed drugs seeking new indications: FDA approval of a supplemental NDA (sNDA) or supplemental BLA (sBLA) for the specific indication referenced For generic drugs: FDA approval of an Abbreviated New Drug Application (ANDA) For biosimilars: FDA approval of a 351(k) application The following constitute qualifying approvals: Standard approval (traditional approval based on clinical benefit), Accelerated approval (based on surrogate endpoints), Approval with Risk Evaluation and Mitigation Strategy (REMS), Approval with restricted distribution or indication limitations, except compassionate use/expanded access programs The following do not constitute qualifying approvals: Approvable letters that require additional actions before approval Tentative approvals pending patent or exclusivity expiration FDA requests for additional information or studies Extension of Prescription Drug User Fee Act (PDUFA) dates Approval for compassionate use or expanded access programs only Approval only for export or for use outside the United States Emergency Use Authorization (EUA) without full approval Complete Response Letters (CRLs) indicating the application cannot be approved in its current form If the listed drug is approved before the end of the specified period, the market will resolve to "Yes," regardless of potential Advisory Committee votes against approval or later withdrawal of approval. Conditional approvals may include post-marketing requirements or commitments and still qualify. The primary resolution source for this market will be official information from the FDA; however, a consensus of credible reporting may also be used.
| Mecky |
| Yes |
| 999.99 |
| cocococococo | No | 942.88 |
| SnapElectionAvoider | No | 900 |
| Emerald Scout EF69 | No | 723.14 |
| SmartBoyBilly | No | 600 |
| chessplayer | No | 579.09 |
| Indigo Atlas 9912 | Yes | 413.3 |
Open a trader’s name to inspect the wallet’s available P&L, positions and recorded trades, with source dates and coverage. A large position alone does not establish a winning track record.
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