May 5, 2026 - May 6, 2026, the price of 92-93°F surged from 6.5c to 33c, and 90-91°F surged from 18.5c to 47.5c. Conversely, 88-89°F plummeted from 40.5c to 13.5c, and 86-87°F dropped from 20c to 2.2c. The reason is that updated meteorological forecasts confirmed the early arrival of a 'heat dome', revising Thursday's expected high from the upper 80s to the low 90s.

May 3, 2026 - May 5, 2026, the price of the '<39.0' option surged from 45c to 77c (then settling at 65.5c), while '39.0–39.4' fell from 36c to 21.5c, and '39.5-39.9' plummeted from 18.5c to 1.5c. This is because, nearing resolution, new polling data showed a further decline in approval ratings, completely extinguishing hopes of a rebound above 39.5% and pushing expectations further below 39%. May 2, 2026 - May 4, 2026, the price of the '<39.0' option surged from 33c to 55c, while '39.0–39.4' dropped from 40.5c to 31c, because as the resolution date approaches, more polling data solidified the reality of extremely low approval ratings, breaking previous expectations of a floor at 39%. May 2, 2026 - May 2, 2026, the price of the '<39.0' option plummeted from 63.5c to 33c, while the '39.0–39.4' option surged from 25c to 39.5c. This is likely due to new polling data indicating that although Trump's approval is low, the momentum to break below the 39% mark is insufficient, showing signs of short-term stabilization at the bottom. May 1, 2026 - May 2, 2026, the price of the '40.0–40.4' option crashed from 26c to 6.5c, and the '39.5–39.9' option also slid. This is because macro negative factors continue to unfold, completely extinguishing market expectations of a short-term recovery above 40%.

Moderate risk exists. The primary pitfall is the strict 7-day window post-release requirement: because LMSYS Chatbot Arena relies on crowdsourced blind testing, if insufficient votes are gathered to publish a score within 7 days, or if the platform is down, the market defaults to 'No' regardless of the model's actual capability.

May 5, 2026 - May 6, 2026: The price of the 64-65°F option climbed steadily from 20.5c to 36.5c, as short-term weather models became more confident in a cooler trend, pinning the high temperature expectations squarely around 64-65°F. May 5, 2026 - May 6, 2026: The price of the 68-69°F option dropped from a high of 29c down to 13c, because as the resolution date nears, forecasts indicate it is highly unlikely for the temperature to exceed 68°F, leading the market to discount this warmer scenario.

Between May 5 and May 6, 2026, the price of the 30°C option surged from 10.5c to 34.5c, and the 32°C option rose from 15.5c to 28c, as weather forecasting models adjusted towards these slightly higher temperature ranges closer to the resolution date. Between May 5 and May 6, 2026, the price of the 29°C option plummeted from 21.5c to 2.4c, and the 33°C option dropped from 16.5c to 5c, because updated meteorological data largely ruled out these outlier temperature ranges.