Over the past 7 days, the average trading volume of the prediction market Probable once surpassed Opinion. However, despite its relatively low open interest (OI), it experienced a sharp drop, falling from $4 million OI last weekend to below $2 million. Notably, the event 'Will Justin Bieber perform at the Super Bowl halftime show?' has become a major hotspot for transaction volume on Probable recently. This event once hit over 500,000 trades the day before yesterday, yet it was completed by fewer than 300 trading addresses...