Japan's key Nikkei 225 stock average rebounded Tuesday after a 4,500-plus-point tumble over the past three trading days amid market mayhem caused by U.S. President Donald Trump's tariff policy.

The index for major shares on the Tokyo Stock Exchange ended Tuesday's session at 33,012.58, up 1,876 points, or 6.02%, from Monday, when it suffered its third-biggest daily point loss of over 2,600 points to mark its lowest finish since October 2023. The broader Topix closed up 6.26%, or 143.36 points, at 2,432.02. The moves in both gauges were the biggest increase since August.

While uncertainties over the Trump tariff policy continued to weigh on the market, Tokyo stocks rose across the board.