Between April 23 and April 24, 2026, the price of 21°C surged from 21.5c to 42.5c, 22°C surged from 3.75c to 14.95c, and 19°C plummeted from 25c to 8.5c. This is due to updated weather forecasts closer to the resolution date indicating a warmer expected high, shifting market funds from the 18-19°C range to the 20-22°C range. Previous analysis: No options experienced a price movement of more than 10 cents in the past 3 days. The market remained relatively stable.

The sum of the 'Yes' prices across all temperature options in the current prediction market significantly exceeds 100 cents (close to 200 cents). Moreover, the 'Yes' prices for higher temperature ranges like 13°C, 14°C, and 15°C are disproportionately high. This diverges noticeably from mainstream meteorological forecasts which predict lows of 11-12°C. The likely cause is poor market liquidity and slow price adjustments by market makers, resulting in wide spreads and a distorted sum of implied probabilities.

The rules heavily rely on a single third-party data source (Anera), which carries the risk of data delays or methodology adjustments. Additionally, the market targets the 'second-highest' position and includes an alphabetical tiebreaker, adding complexity and the potential for surprise outcomes.

While tracking the inference revenue of top AI companies is a common industry interest, predicting the 'second-highest' earner for a specific week based on a particular third-party data source is relatively niche and unique.

April 22, 2026 - April 23, 2026: OpenAI's Yes price surged from a low of 20.5c to 79c, while Google's Yes price experienced wild fluctuations (dropping from 76.5c to 14.5c). Simultaneously, all other options like Anthropic and xAI plummeted from around 40c to less than 1c. This was driven by the gradual release of this week's inference revenue data, causing market projections to rapidly converge, confirming that the race is mainly between OpenAI and Google, with OpenAI highly likely to secure the second spot.

There is a clear divergence. The prediction market currently assigns higher Yes prices to 22°C, 23°C, and 24°C (all above 0.27), whereas recent mainstream weather forecasts (including warnings from the Hong Kong Observatory) explicitly state that a cold front will bring temperatures down to around 20°C in urban areas from April 24 to the morning of April 25. The market has not fully priced in this latest cooling warning, undervaluing the probabilities of 20°C and 21°C.

This is a market predicting the daily high temperature of a specific city. While weather derivatives exist in professional finance, betting on the exact temperature of a single day is a niche, somewhat novelty-driven topic for general public prediction markets.