Historically, Trump's statements on trade and shipping have led to increased market volatility, but this specific demand for free canal passage could be seen as a positive for US shipping companies, potentially boosting their stock prices. The impact on international trade and relations, however, may be more complex, with potential implications for global shipping costs and trade balances. The mention of Secretary of State Marco Rubio and the call to 'immediately take care of' the situation suggests a sense of urgency and a willingness to take bold action, which could lead to increased market confidence in Trump's ability to negotiate favorable trade terms. The stock market may react positively to this news, particularly in the shipping and transportation sectors, as investors anticipate potential cost savings and increased competitiveness for US companies. Nevertheless, the longer-term effects will depend on the reception of this demand by the canal authorities and the international community, as well as the potential for retaliatory measures or trade tensions.