You're the PM for our stock trading product. With gross profit dropping significantly over the last month, what would you do?

Focus on identifying the root causes of the gross profit decline by analyzing key metrics such as trading volume, user engagement, and transaction fees. Consider both external factors (market trends, competitor actions) and internal factors (product performance, customer feedback). Propose actionable steps to address the issue, such as optimizing pricing strategies, enhancing user experience, or launching targeted marketing campaigns. Be prepared to discuss how you would measure the impact of your proposed solutions and iterate based on results.