This section shows the allocation of your holdings by industry, asset type and market capitalisation.
Most investors with listed investments aim to reduce risk by spreading their investments across different industry groups or investment types (securities, ETFs, bonds etc).
That is an excellent start but it does not guarantee a proper diversification nor the lowest possible risk.
By looking at the granular diversification between the listed investments in your portfolio you can identify those that may not bring the expected diversification benefits.