April 6, 2026 - April 8, 2026, the price of the '23°C or higher' option further climbed from 82c to 95c. The reason is that with only one day left until settlement, weather forecasts have fully locked in the high-temperature trend, ruling out any possibility of a significant drop. April 5, 2026 - April 6, 2026, the price of the '23°C or higher' option surged from 31c to 82c. This is because, as the date approached, the accuracy of weather forecasts significantly improved, confirming that the high temperature would easily exceed 23°C. April 5, 2026 - April 6, 2026, the 'Yes' prices for lower temperature options like '14°C', '16°C', '17°C', '18°C', '19°C', '20°C', '21°C', and '22°C' all dropped significantly (by more than 10c). This is due to weather forecasts ruling out the possibility of extreme low temperatures.

April 8, 2026 - April 9, 2026: The price of 33°C briefly surged from 13.5c to 41.5c before retracting, while 31°C rose from 23.5c to 36.5c. This was driven by intraday updates from the NEA, causing intense market speculation over whether the exact timing of afternoon showers would effectively suppress the daily high, leading to volatile betting across adjacent temperature brackets. April 6, 2026 - April 7, 2026: The price of 31°C rebounded and surged from 12c to 23.5c. This was driven by the market realizing that while rain is expected, tropical thunderstorms are usually short-lived and insufficient to suppress the daily high below 30°C, causing capital to flow back into middle-range temperatures. April 5, 2026 - April 6, 2026: The price of 31°C dropped from 31.5c to 17.5c, 30°C dropped from 23c to 6.55c, and 29°C dropped from 19c to 4c. This was likely driven by market capital ignoring recent precipitation forecasts and betting heavily on historical average highs (32°C-33°C), leading to a sell-off in lower temperature options.

There is a significant divergence. Mainstream meteorological services (like AccuWeather and Weather Underground) predict thunderstorms for April 9, with high temperatures ranging from 86°F to 88°F (approx. 30°C-31°C) [8, 12]. However, the prediction market still heavily favors 32°C (37.5%) and 33°C as the most likely outcomes. This indicates that market participants are overly reliant on historical April temperature averages for Singapore and are failing to adequately price in the cooling effect of the specific short-term precipitation forecast.

April 8, 2026 - April 9, 2026, the price of the 19°C option climbed from 43c to 52.5c, and the 20°C option surged from 26.5c to 51.5c before settling at 47c. The reason is that the latest short-term forecasts from JMA and Wunderground pinned the high temperature exactly between 19°C and 20°C, causing market consensus to concentrate heavily on these two options. April 5, 2026 - April 6, 2026, the price of the 16°C option plummeted from 21c to 5c, and the 17°C option dropped from 28c to 11c. The reason is that updated weather forecasts indicated warmer weather for Tokyo on April 9, with the expected high temperature revised upwards to around 20°C, significantly reducing the probability of lower temperatures.

If this event occurs (resolves Yes), it would trigger a structural collapse in global financial markets. TSMC (TSM) and the semiconductor supply chain (NVDA, AAPL, etc.) would be hit hardest, causing a violent crash in the Nasdaq. Safe-haven assets like Gold, DXY, and Crude Oil would surge. This prediction market serves as a prime 'doomsday hedge' instrument.

The Fed's interest rate decision directly dictates the cost of capital, profoundly impacting all major asset classes. An unexpected resolution (e.g., a surprise cut or hike) would trigger immediate volatility in US Treasury yields, subsequently driving repricing in the Dollar Index (DXY), Gold, and equities (S&P 500). Given the timeline (July 2026), the market sensitivity to policy shifts at that economic juncture is likely high.