<p><img src="https://images.cointelegraph.com/images/840_aHR0cHM6Ly9zMy5jb2ludGVsZWdyYXBoLmNvbS91cGxvYWRzLzIwMjItMTEvMGZjNTBjOTItMDUxMC00MTg0LThiMjYtNzhiZTcxMzM4ZGM0LmpwZw==.jpg"></p><p>Signs that market optimism is running away with itself come ahead of the U.S. midterm elections and key economic data.</p>