An asset is said to be more liquid if it can be converted to cash quickly, without changing much of its value. Gold, Cash, good blue-chip Stocks are excellent examples of liquid assets. Liquidity Real estate, PPF, ULIPs and other complex products are excellent examples of illiquid assets. PPF is safe but illiquid as it has a lock-in period. So, why does it really matter to me? It is important to have some emergency fund in liquid form. If your expenses for a month is around Rs. X/-, you need to have Rs. 6X/- as contingency emergency fund in liquid form. How does it affect a bank or investment bank? Bank lends money based on the documents and collateral. If the collateral is a illiquid asset, the risk is more. They might not be able to get the money on time. Investment banks and Hedge funds also creates complex products to help banks in creating more money to lend more. If the underlying asset is illiquid, the risk would be more. The risk is act...