There is no statutory requirement for investment companies to release NAV per share data, or for the regular publication of gearing and portfolio spread details. The AIC believe that the regular publication of this information is important for shareholders of investment companies and therefore offer Members the opportunity to release information on a monthly basis, in a comparable and orderly manner within an industry agreed framework. This information is released through the MIR where Members voluntarily provide the AIC with month-end assets, prior charges and portfolio summary details.