Other comprehensive income (OCI) is a financial statement category that includes gains and losses that are not included in net income but are instead reported separately in the equity section of the balance sheet. OCI includes items such as unrealized gains or losses on investments, foreign currency translation adjustments, gains or losses on pension plans, and certain derivative instruments. These items are not included in net income because they are not considered to be part of a company's core operations. Instead, they are viewed as temporary fluctuations that do not necessarily reflect the company's long-term financial performance. OCI is important because it provides investors with a more complete picture of a company's financial health and performance.