What does AE mean when selling?

Excuse me, could you please clarify what AE stands for in the context of selling? I'm familiar with many abbreviations and acronyms in the world of finance and cryptocurrency, but AE isn't immediately jumping out at me. Is it related to a specific platform, exchange, or trading strategy? Understanding the meaning behind AE will help me provide a more accurate and informative answer to your question. Thank you in advance for your clarification.