The Longevity Score reflects a prop firm's stability and experience in the financial markets. This score is scientifically derived based on the number of years the firm has been operational, their historical performance, and their ability to adapt to market changes. A high longevity score suggests that the firm has a proven track record of reliability and resilience over time. For prop traders, this filter is crucial as it ensures they are partnering with firms who have demonstrated long-term stability and success in the market, providing a solid foundation for their trading activities.