Benchmark disclosure requirement: mutual funds must publish benchmark index performance alongside scheme returns for investor comparison. Mutual funds must disclose benchmark index performance alongside scheme returns in half yearly reports for equity oriented schemes, selecting appropriate broad or sectoral indices aligned with each scheme's objective. Multiple indices may be shown and any change must be recorded and justified. AMCs and trustees are required to review scheme performance periodically, compare it with benchmarks, consider industry data for corrective action, and report compliance in quarterly AMC reports and half yearly trustee reports to the regulator.