Nikkei Falls Over 2,400 Points, Slips Below ¥50,000 Amid Overheating Fears

The assessment is based on the highly authoritative and relevant primary source from Nikkei Inc., titled "上昇・下落記録 － 日経平均プロフィル" (Rise/Fall Records - Nikkei Average Profile). This source provides a historical record of the largest single-day drops for the Nikkei 225 average. According to its data on the largest historical drops in points (下落幅), the single largest drop occurred on October 20, 1987. On this day, the index fell by 3,836.48 points. This figure is significantly "more than 2,400 points," directly confirming the first part of the statement. The same source provides the closing value (終値) for that day, which was 21,910.08 yen. This value is well "below ¥50,000," confirming the second part of the statement. The other provided sources are irrelevant as they concern a different index or specific company profiles and do not contain historical data on major market movements. Since the sole relevant and highly credible source directly substantiates both components of the statement, the statement is assessed as likely true with high confidence.