On what date did Japan’s Nikkei 225 reach its all-time closing peak before the 1990s crash?

Japan’s Nikkei 225 reached its all-time closing peak before the 1990s crash on December 29, 1989.

The index closed at 38,915.87 as Japan’s asset-price bubble neared its peak. During the late 1980s, abundant credit and optimistic expectations pushed Japanese share and land prices to extraordinary levels. Tokyo commercial property became especially expensive, and banks were deeply connected to the rising real-estate market.

The Bank of Japan tightened monetary policy, and the bubble began to deflate. Japanese equities fell sharply in 1990, while land prices continued declining for years. The prolonged stagnation that followed is often called Japan’s “Lost Decades,” although the timing and causes of that period involve several economic factors.

The 1989 peak is not the same as the ultimate low: the Nikkei continued falling after 1990 and reached a much lower level in 2009 during the global financial crisis. That distinction helps explain why Japan’s crash became a long-running economic story rather than a single-day event.