As a Big Three ratings agency, S&P Global is usually the one handing out grades on Wall Street. After the company reported its fourth quarter and full year earnings on Tuesday, markets got their turn to render a verdict. Unfortunately, the financial information and analytics provider’s revenue proved unable to overcome a wave of AI-driven investor jitters, meaning yesterday’s grade came back like one handed down by a high school’s grumpy AP chemistry teacher. SUBSCRIBE:  Receive more of our free The Dail ...