SimpleFunctions

At least 2400 measles cases in the U.S. by May 31, 2026

2400 is priced at 1¢ on Polymarket. Current book: 0¢ bid, 1¢ ask, 1¢ spread. This outcome ranks #3 of 3 inside Measles cases in U.S. by May 31?.

Price history

1¢ current

1¢
0¢5¢
May 19, 2026May 28, 2026

Contract brief

This market will resolve to "Yes" if there have been the specified amount or more confirmed cases of Measles (Rubeola) in humans in the territory of the United States of America in 2026, according to the CDC case counter by May 31, 2026, 11:59 PM ET. Otherwise, this market will resolve to "No". The resolution source for this market will be the CDC Measles (Rubeola) counter 'Total Cases' in 2026 (see: https://www.cdc.gov/measles/data-research/index.html) at the resolution time. If the counter becomes unavailable, another credible source will be used. Note: Only cases reported by the CDC Measles (Rubeola) counter will qualify, regardless of reports from U.S. State agencies or other sources.

Outcome

2400

Rank

#3 of 3

Leader

2000 37¢

Range

1¢-37¢

Family volume

$49K

Identifier

0xf810fcc5...6104

May 28, 2026, 6:08 PM UTC · 1h ago

Implied probability

1¢
Latest venue quote
May 28, 2026, 6:08 PM UTC · 1h ago

Bid

Ask

Spread

24h volume

$352

Family rank

#3 of 3

3 outcomes · Measles cases in U.S. by May 31?

Closes

May 31, 2026

Family volume

$49K

Orderbook snapshot

0 / 1¢

Polymarket
1¢ spread
BidSize
0¢24K
0¢2.2K
0¢165
0¢100
AskSize
4¢50
4¢100
4¢116
4¢20
5¢100
6¢108
7¢500
100¢20

Contract terms

What resolves this market.

YES condition

This market will resolve to "Yes" if there have been the specified amount or more confirmed cases of Measles (Rubeola) in humans in the territory of the United States of America in 2026, according to the CDC case counter by May 31, 2026, 11:59 PM ET. Otherwise, this market will resolve to "No". The resolution source for this market will be the CDC Measles (Rubeola) counter 'Total Cases' in 2026 (see: https://www.cdc.gov/measles/data-research/index.html) at the resolution time. If the counter becomes unavailable, another credible source will be used. Note: Only cases reported by the CDC Measles (Rubeola) counter will qualify, regardless of reports from U.S. State agencies or other sources.

Venue

Polymarket

Closes

May 31, 2026

Identifier

0xf810fcc5…6104

SF Signal
SF Index
100000.00
Regime
neutral

Event family

Measles cases in U.S. by May 31.

The same race as a probability stack: rank, volume, and where this contract sits against the other outcomes.

Total volume

$49K

Outcomes

3

Highest price

2000 37¢

Current share

10%

Indicators

Yield, cliff risk, volatility, and regime.

CRI

32

VR

0.76

IAR

2.4/h

Overround

-0.6%

Regime

neutral

Score

0.5

Full indicator table

32
VR
0.76
IAR
2.4/h
Overround
-0.6%

Odds pages

Related prediction questions

Browse odds

Related readings

Matched from SimpleFunctions blog, opinions, technical guides, concepts, and learn pages.

Browse library
Opinionanalysis

Information Finance Has Arrived: A Material Map of Prediction Markets in Q2 2026

Combined Kalshi + Polymarket volume hit $66B in just four months of 2026 — already greater than the entire 2025 industry total. Bernstein projects $1T by 2030. Two venues hold 95% of US share. The distribution layer fragmented across nine retail surfaces. AI agents are 30% of Polymarket wallet activ

Conceptmethodology

Resolution Risk Premium: Pricing the Rule, Not the Outcome

When the resolution rule is fuzzy, the price is the market's estimate of how the rule will be interpreted, not the outcome's probability. Three case studies and the discount math.

Opinionanalysis

Liquidity Availability Is the Real Edge in Prediction Markets

Implied yield, cliff risk, and overround all describe what to trade. Liquidity Availability Score describes whether the orderbook can absorb the trade. Why LAS is the indicator that decides who actually books P&L.

Blogmacro

US Recession 2025? What 1% Prediction Market Odds Get Right—and Wrong—About the Cycle

Prediction markets put 2025 US recession odds near 1%, while yield curves, economic indicators, and institutional forecasts point to much higher risk. This deep dive compares market pricing to historical base rates, Federal Reserve policy, and forecasting models to see if investors are underpricing recession risk.

Blogmarkets

Kalshi vs Polymarket: Which Prediction Market Should You Trade?

In-depth comparison of Kalshi and Polymarket for prediction market traders. Regulatory structure, liquidity, fees, API tooling, and cross-venue trading with SimpleFunctions.

Opinioncomparison

Kalshi vs Polymarket: Mechanics, Fees, Regulation, Liquidity (2026)

Side-by-side comparison of Kalshi and Polymarket in 2026. Fee math, calibration data, withdrawal speed, and a decision tree for picking the right venue.

SimpleFunctions context

Index, screen, query, and monitor.

Open index

How we compute these odds

SimpleFunctions aggregates live prediction-market contracts from Kalshi and Polymarket. Each slug groups contracts that resolve on the same underlying event, identified by venue event_id.

For binary slugs, the headline probability is the liquidity-weighted mid-price across all bound contracts. For multi-outcome slugs (e.g. elections with 3+ candidates), the headline is the leader’s price; we never arithmetically average disjoint outcomes — that would produce a number with no real-world meaning.

Snapshots refresh every 5 minutes during market hours; daily aggregates are computed at 04:00 UTC. The 30-day sparkline is drawn from per-ticker daily means stored in market_indicator_daily; 24h delta and movement events are derived from the same source.