The risk-return trade-off is the concept that the level of return to be earned from an investment should increase as the level of risk increases. Conversely, this means that investors will be less likely to pay a high price for investments that have a low risk level, such as high-grade corporate or government bonds. Different investors will have different tolerances for the level of risk they are willing to accept, so that some will readily invest in low-return investments because there is a low risk of losing the investment. Others have a higher risk tolerance and so will buy riskier investments in pursuit of a higher return, despite the risk of losing their investments. Some investors develop a portfolio of low-risk, low-return investments and higher-risk, higher-return investments in hopes of achieving a more balanced risk-return trade-off.