Predicting whether a former FBI director will leave the country within a specific half-month window is highly unusual and niche, something most people would not consider without a specific political rumor or breaking legal catalyst.

The title mentions 'Denver', but the rules explicitly specify the 'Buckley Space Force Base Station (KBKF)' in Aurora. Temperatures between these locations can vary, and traders might mistakenly check the wrong weather station (e.g., Denver International Airport KDEN) if they don't read the rules carefully, presenting a notable pitfall.

The title asks for the temperature in 'Seoul', but the resolution criteria strictly specify data from the 'Incheon Intl Airport Station (RKSI)'. Incheon is coastal, and its temperature often differs from central Seoul. Traders relying on central Seoul forecasts without reading the rules face a significant risk of misjudgment. Additionally, temperatures are resolved to whole degrees Celsius.

2026-05-11 - 2026-05-12, The price of the 20°C option surged from 38.5c to 63.0c as the actual observed temperature for the day effectively locked in around 20°C (68°F). 2026-05-11 - 2026-05-12, The price of the 21°C option initially rose from 32.5c to 55.0c before falling back to 30.5c, due to earlier forecasts suggesting a potential high of 70°F (21°C), which failed to materialize as the day progressed. 2026-05-10 - 2026-05-11, The price of the 21°C option surged from 21.5c to 38.5c as the latest KMA forecast predicted a high of 21°C for Incheon. 2026-05-10 - 2026-05-11, The price of the '22°C or higher' option plunged from 35.0c to 13.5c, as increased certainty of rain limited the potential for higher temperatures. 2026-05-10 - 2026-05-11, The price of the 20°C option rose steadily from 24.5c to 35.0c, gaining market favor as another highly probable outcome under rainy conditions.

The biggest rule trap is that a delay in the CDC report publication triggers an automatic resolution to the lowest bracket, rather than an extension or void. Additionally, traders must strictly use the official cumulative rate; any models, estimates, or state-level reports are invalid.

This is a relatively specialized public health metric. While infectious disease tracking has become more common in prediction markets post-COVID, the general public does not typically focus on or speculate about the exact flu hospitalization rate for a specific week.

May 8, 2026 - May 11, 2026, the price of the 85-90 bracket surged from 49.5c to 96.7c, while the prices for <80, 80-85, 90-95, 95-100, and 100+ brackets all crashed from around 40c to extremely low levels (~1c). This was due to the CDC releasing key flu hospitalization surveillance data (Week 18) just before the weekend, clarifying that the cumulative rate will land in the 85-90 bracket and causing market expectations to rapidly converge.