Financial markets have changed significantly in recent years due to globalisation, liberalisation and technological developments. Financial markets may exhibit dynamics that change over time depending on economic conditions, market trends, technological developments, regulatory changes and investor behaviour.  These dynamics can be manifested in various ways and accordingly, significant changes may occur in asset prices.  The asymmetric relationships observed in asset prices and the changing structure over time have changed the perspective of basic finance theories.  Asymmetric relationships, which are of great importance for investors in valuing risk and potential returns, have become a phenomenon that must be taken into account in order to make sound investment decisions based on the fact that these factors are not proportional.  Asymmetric relationships between financial assets are typically observed when the potential gains from an investment are significantly greater than the potential losses.  The fact that financial markets are dynamic and constantly changing also adds importance to asymmetric relationships.  Research on asymmetric relationships in financial markets has been conducted in different markets such as equities, asset prices, derivatives, foreign exchange prices, credit default swaps (CDS) and leveraged transactions. Aiming to review the literature, this study investigates the use of asymmetric relationships in finance.  In this context, the study analyses the studies that consider the asymmetry and the time-varying structure of the financial markets, particularly in the Turkish financial markets, and examine the relationships between financial assets in detail.