The Nikkei 225’s all-time closing high before Japan’s long asset-market decline was 38,915.87, reached on December 29, 1989.
Japan’s late-1980s boom pushed share and land prices to extraordinary levels. Easy credit, financial speculation, and rising expectations helped drive the Nikkei upward. After the Bank of Japan tightened monetary policy, the bubble burst, and Japanese stocks began a prolonged decline in the early 1990s.
The 38,915.87 figure is a closing value, not the highest intraday quotation. That distinction matters because financial indexes can record a session high and finish at a different level. The Nikkei eventually fell below 8,000 in 2003. Although the market later recovered and exceeded its 1989 closing high in 2024, the 1989 peak remains a key reference point in discussions of Japan’s asset-price bubble and “lost decades.”