
Yes is at 7.5%, down 3 points from 10.5% when the market opened on 7 Oct 2026.
Across the 18 daily closes on record from 7 Oct 2026 to 25 Oct 2026 (1 day in that span have no close), the highest close was 14.5% on 8 Oct 2026 and the lowest 7% on 11 Oct 2026. A week before that last close Yes was at 7.5%.
$213.4 traded in the last 24 hours, out of $15.47K since listing. The order book holds $1.86K, with a 1.0% gap between the best bid and the best ask. Across the latest 165 trades, $974.99 bought Yes and $5.19K bought No.
The largest Yes position is lineth with 3.5K shares; the largest No position is MisTKy with 1.8K. Ten wallets hold 81.2% of the shares on Polymarket's public holder list.
Trading closes on 1 Jan 2027, 69 days from now.
Polymarket prices as of Oct 25, 3:20 AM UTC
Daily closes of the Yes price, Polymarket CLOB, 18 points, 7 Oct 2026 – 25 Oct 2026, chart shows 5%–20%
| Observed | Yes price |
|---|---|
| 7 Oct 2026 | 10.5% |
| 25 Oct 2026 | 7.5% |
This market will resolve to "Yes" if a confirmed case of pneumonic plague in a human is reported in the United States at any point between market creation and the specified date, 11:59 PM ET. Otherwise, this market will resolve to "No". A "confirmed case" is a case explicitly identified by a qualifying source as laboratory-confirmed Yersinia pestis infection with pneumonic (pulmonary) involvement, or explicitly announced as a confirmed pneumonic plague case. Publication of the underlying laboratory results is not required. A bubonic or septicemic case that progresses to pneumonic plague qualifies. A case reported only as "plague" with no form specified, and a case described only as suspected or probable, do not qualify. For the purposes of this market, the United States includes the 50 states and the District of Columbia. A case qualifies if the patient is diagnosed in the United States, regardless of where the infection was acquired. Cases diagnosed outside the United States, including in U.S. citizens abroad, do not qualify. The case does not need to be epidemiologically linked to the Irkutsk outbreak or any other specific outbreak to qualify. Resolution turns on the date a qualifying source publishes the confirmation, not the date of exposure, symptom onset, or laboratory result. A report published after the deadline does not count even if the infection occurred earlier. The primary resolution sources for this market will be official information from the U.S. Centers for Disease Control and Prevention (CDC), U.S. state or local public health authorities, and the WHO; however a consensus of credible sources will also suffice.
Official listing: polymarket.com/event/plague-case-in-us-by-december-31
| Severe-Decoder |
| Yes |
| 1.52K |
| DegenerateJanet | No | 1.22K |
| wallet-account-test | Yes | 1.03K |
| yzj123 | Yes | 714.29 |
| Alegrandebig | No | 530.9 |
| ran | No | 500 |
| willsom | No | 498.3 |
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.
New to prediction markets? How to read a market page