The Prediction Markets

Will 170 million people have received a dose of an approved COVID-19 vaccine in the US by May 15, 2021?

Closed
May 15, 2021
Traded
$89K
Venues
Polymarket
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This market has closed

Trading ended on May 15, 2021. The prices below are the last ones before it closed and no longer update. Browse open markets

Odds by venue

Consensus blends each venue’s last price, weighted by how much has traded there. 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.

  • Polymarket

No outcome is trading right now. Check back when the venues reopen this market.

Who resolves this market

Polymarket
Polymarket resolves via:
UMA optimistic oracle, source: covid.cdc.gov

About this market

Final prediction market prices for "Will 170 million people have received a dose of an approved COVID-19 vaccine in the US by May 15, 2021?". $89K has traded across 0 outcomes on Polymarket. The market closed on May 15, 2021.

This is a market on whether 170 million people in The United States of America will have initiated vaccination, according to the CDC COVID tracker, by the resolution date, May 15, 2021, 12 PM ET. This market will resolve to "Yes" if 170 million people or more are listed as having received their initial dose of vaccination by the resolution source. This only concerns the first dose of vaccination. For vaccines requiring two doses for inoculation, this market considers only the first dose to be considered having initiated vaccination. This market will resolve to "No" if, for any reason, fewer than 170 million people have initiated vaccination by the resolution date. The resolution source for this market will be the official data published by the CDC available at https://covid.cdc.gov/covid-data-tracker/#vaccinations. This market will resolve according to the data as available immediately at the time of resolution, and resolution will not be delayed for the purpose of waiting for updated data from a specific date.

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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