Gartner's stock plummeted, experiencing its most significant drop since 1999, triggered by a historic decline in CEO confidence. The IT consulting firm revised its revenue forecast downward, citing cautious spending behavior among corporate leaders. The downturn reflects growing concerns about the economic outlook, as CEOs appear to be bracing for a potential recession. This shift in sentiment is impacting IT spending and, consequently, Gartner's financial performance. The stock's performance underscores the sensitivity of the market to CEO sentiment and its potential to influence investment decisions and overall market trends.