There are both differences and similarities between capital and money markets. From the issuer or seller's standpoint, both markets provide a necessary business function: maintaining adequate levels of funding. The goal for which sellers access each market varies depending on their liquidity needs and time horizon. Similarly, investors or buyers have unique reasons for going to each market: Capital markets offer higher-risk investments, while money markets offer safer assets; money market returns are often low but steady, while capital markets offer higher returns. The magnitude of capital market returns is often a direct correlation to the level of risk, however that is not always the case.  Although markets are deemed efficient in the long run, short-term inefficiencies allow investors to capitalize on anomalies and reap higher rewards that may be out of proportion to the level of risk. Those anomalies are exactly what investors in capital markets try to uncover. Although money markets are considered safe, they have occasionally experienced negative returns. Inadvertent risk, although unusual, highlights the risks inherent in investing - whether long or short term, money markets or capital markets