The Nikkei 225 fell 5.78 percent on Friday, November 6, 2026, closing at 57,550 after losing 3,528 points. The index was on course for a weekly decline of roughly 9 percent, its steepest since March.
The sell-off was led by a small group of large companies. Ajinomoto, Yamaha and Sumitomo Dainippon each dropped more than 12 percent in a single session, which shows how quickly sharp moves in a few names can reshape the index.
Narrow leadership, heavy index weights
The drop came after a day in which most Nikkei constituents rose. On November 5, 168 of the 225 stocks in the index gained, but losses in a handful of heavily weighted technology names outweighed them, while the broader TOPIX index rallied. The gap between the two indexes shows how a price-weighted benchmark can fall even when most shares advance.
For investors, the episode is a reminder of how concentrated Japan’s equity benchmark has become. Readers can follow the wider market picture in our Finance section, and the currency backdrop in Trade and Currency.
Source: Trading Economics market report, 6 November 2026; Investing.com market update, 5 November 2026.
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