As far as I know it means that assets with high risks are substituted with he assets with low risks. As a matter of fact, it means that ISEC WM experts thoroughly watch for the condition of your portfolio and do rebalancing in order not to put your funds at a high risk. Moreover, it also means that low-liquidity assets are substituted with high ones in order to increase the overall profitabilityi of your portfolio.

You shouldn't really bother about that, sit back and relax. Experts work... They know this business best.