In the context of the Fluid Trading Competition, a KPI refers to a quantifiable metric that measures the performance and success of a specific aspect of a company's business. These metrics are crucial indicators of a company's health, growth, and overall operational effectiveness.

KPIs are used to evaluate various aspects of a company's performance, such as financial performance, customer engagement, operational efficiency, and more. In the competition, participants will trade futures contracts based on these KPIs, such as revenue, earnings per share (EPS), daily active users, and premium subscribers, to forecast market movements and manage risk effectively.