$SUI P/L, or Profit and Loss, is a financial metric used to assess the performance of investments, businesses, or trades. It shows the difference between revenue (or gains) and expenses (or losses) over a specific period. A positive P/L indicates profit, while a negative one reflects a loss. In trading, P/L helps investors evaluate the success of their strategies, track portfolio performance, and make informed decisions. Realized P/L reflects completed transactions, whereas unrealized P/L shows potential gains or losses from open positions. Regularly monitoring P/L is essential for managing risk, setting goals, and maintaining financial health in personal or business finances.