Corporate Japan and its investors are bracing for a brave new world this week: The nation’s landmark Financial Instruments and Exchange Law—a precursor to Japan’s own Sarbanes-Oxley reforms—finally goes into effect.

Corporate Japan and its investors are bracing for a brave new world this week: The nation’s landmark Financial Instruments and Exchange Law—a precursor to Japan’s own Sarbanes-Oxley reforms—finally goes into effect.