The rules contain specific caveats: only 'main feed' replies count, deleted posts must survive ~5 minutes for the tracker to capture them, and the primary resolution source is a specific third-party tracker (xtracker) rather than manual counting on X. This creates moderate resolution risk as casual observers' manual counts can easily diverge from the tracker's data.

Betting on the exact volume of social media posts by a specific billionaire over a random 48-hour window is a highly niche and novelty-driven market, primarily catering to crypto-betting culture rather than mainstream predictive topics.

May 5, 2026 - May 6, 2026, the price of the '<40' option rebounded from 14c to around 36c, while the '40-64' option pulled back from its peak of 78.5c to 63.5c, and the '65-89' option continued its decline to below 3c. This was caused by a sharp drop in Musk's tweeting frequency in the recent hours, substantially increasing the likelihood of the final count falling short of 40, causing the market to dial back its extreme confidence in the 40-64 range. May 4, 2026 - May 5, 2026, the price of the '40-64' option climbed steadily to 78.5c, while '<40' rose to 26c before dropping back to the 5.7c-14c range, and the '65-89' option dropped from 28.5c to around 9.5c. This occurred because as the time window progressed, Musk's actual tweet pacing became clearer, further solidifying market consensus into the 40-64 range and ruling out both extreme high and extremely low frequencies. May 2, 2026 - May 4, 2026, the price of the '40-64' option surged from 25c to around 59c, while the '65-89' option dropped from 31c to roughly 14c before recovering to around 24c. This occurred because market participants recalibrated their expectations based on Musk's most recent posting frequency, anticipating a more moderate activity level falling solidly into the 40-64 bracket for this specific 48-hour window.

Predicting the exact lowest daily temperature in a specific city is common in specialized weather derivatives, but remains a relatively niche and somewhat novelty topic for the general public and mainstream prediction markets.

May 4, 2026 - May 5, 2026, the price of 7°C plummeted from 39c to 7c as market expectations shifted towards a warmer night, causing funds to flow into higher temperature options. May 4, 2026 - May 5, 2026, the price of 8°C surged from 12.5c to 39c as updated forecasts made it a safer consensus middle ground. May 4, 2026 - May 5, 2026, the price of 9°C surged from 21c to 44.5c before settling at 37c, likely due to some short-term forecast models overestimating the warming effect of overnight cloud cover.

Significant divergence exists. Polymarket's current leading options are 9°C and 10°C, yet the official resolution source (Wunderground) and mainstream media (BBC, Met Office) forecast a low around 45°F (7.2°C) or 7-8°C. The market is evidently overestimating the low temperature, potentially because traders are referencing urban London temperatures rather than the cooler London City Airport station.

May 4, 2026 - May 5, 2026, the price of the 27°C option surged from 24.5c to a peak of 53c, then stabilized around 47c; concurrently, the 26°C option rose from 23c to 42.5c. Meanwhile, the 28°C option plummeted from 20.5c to 3.5c. The reason is that as the date approached, meteorological forecasts ruled out the possibility of unusually high temperatures, pinning the expected maximum strictly within the 26-27 Celsius range.

There is some divergence. A few online forecasts (such as certain Weather Underground feeds or automated Google Weather results) suggest the high on May 6 could be as low as 62°F. However, the prediction market strongly favors 68-71°F, indicating that traders either trust other models predicting higher temperatures (like AccuWeather's 70-71°F) more, or are pricing in recent upward revisions in the weather forecast.