The Prediction Markets

FDA approves skin cancer vaccine by...?

Closes
Jul 1, 2027, in 8 months
Traded
$208K
Venues
Polymarket
Prices updated
just now
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What the markets expect

December 31, 2027 60%

Next is September 30, 2027 at 27.4%. Only Polymarket lists this market, so there is no second price to compare.

December 31, 2027 60%September 30, 2027 27.4%June 30, 2027 12.6%

Odds by venue

Fair chance strips out each venue’s built-in margin (its prices add up to more than 100%), then blends the venues by how much has traded there, so the outcomes add up to 100%. Best Yes price is the cheapest ask across venues, and the payout is what a winning $100 stake returns before fees. Open a row for each venue’s contract name, bid and ask, and how closely their rules match.

Prices come from our regular polls of each venue. Ages are as of when this page was built.

  • Polymarket
December 31, 2027
60%
Polymarket 64.5%(60% fair)polled, 22s agoBest Yes 65¢ on Polymarket, $100 pays $154 (1.54x)
Polymarket
Contract
December 31, 2027
Last price
64.5%
Fair, margin removed
60%
As of
Polled just now
Buy Yes
65¢
Sell Yes
64¢
$100 on Yes pays
$154 (1.54x)
Volume
$157K
Trade this on Polymarket
September 30, 2027
27.4%
Polymarket 29.5%(27.4% fair)polled, 22s agoBest Yes 31¢ on Polymarket, $100 pays $323 (3.23x)
Polymarket
Contract
September 30, 2027
Last price
29.5%
Fair, margin removed
27.4%
As of
Polled just now
Buy Yes
31¢
Sell Yes
28¢
$100 on Yes pays
$323 (3.23x)
Volume
$17K
Trade this on Polymarket
June 30, 2027
12.6%
Polymarket 13.5%(12.6% fair)polled, 22s agoBest Yes 14¢ on Polymarket, $100 pays $714 (7.14x)
Polymarket
Contract
June 30, 2027
Last price
13.5%
Fair, margin removed
12.6%
As of
Polled just now
Buy Yes
14¢
Sell Yes
13¢
$100 on Yes pays
$714 (7.14x)
Volume
$34K
Trade this on Polymarket

Who resolves this market

Polymarket
Polymarket resolves via:
UMA optimistic oracle

How the odds have moved

The top 3 outcomes on both venues, with the consensus between them. Hover for exact values.

  • December 31, 2027
  • September 30, 2027
  • June 30, 2027

Order books

Each venue’s resting orders for the selected outcome’s Yes contract, side by side. Top of book streams live; depth refreshes every 15 seconds.

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What your stake buys

Enter a stake to see where it buys the most after fees, using each venue’s live order book.

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Buys at the asks resting now (taker orders), cheapest after fees first, from order-book snapshots up to 15 seconds old. Fees: Kalshi 0.07 × price × (1 − price) per share, rounded up to the cent; Polymarket 0.05 × price × (1 − price) per share (other / general rate). Fee calculator. Estimates only, not advice.

About this market

Live prediction market odds for "FDA approves skin cancer vaccine by...?". December 31, 2027 leads at 60%. Next is September 30, 2027 at 27.4%. $208K has traded across 3 outcomes on Polymarket. The market is expected to resolve by Jul 1, 2027.

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.

Questions

What does the consensus price mean?

It is the price of a Yes contract that pays $1 if the outcome happens. A 14¢ price means traders put the chance near 14%. Where two venues list the same outcome, we blend their last prices, weighting the venue with more trading volume more heavily (neither counts for less than a quarter). When only one outcome can win, each venue’s prices add up to a little over 100% (its margin); the fair chance removes that margin so the outcomes add up to exactly 100%.

How is the payout worked out?

A Yes contract pays $1 if it wins, so at the best ask a $100 stake buys 100 ÷ ask contracts. At 18¢ that is about 555 contracts, paying $556 (5.56x) if Yes happens. Venue fees and price slippage on larger orders are not included.

Why do the venues show different prices?

Each venue has its own traders, fees and order book. Contracts can also settle on slightly different terms, which is why each row lists how closely the rules match.

Is a price gap an arbitrage?

Only when you can buy Yes on one venue below what someone pays for Yes on the other, after fees, and both contracts settle the same way. We show the executable bid and ask so you can check.

How fresh are these prices?

Venue prices refresh every few minutes, and the order book and live quotes stream continuously. Each venue’s card shows when we last observed it.

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