IBM Shares Plunge 13% in Largest Single-Day Sell-Off Since the 1990s

IBM shares experienced a historic collapse on February 23, 2026, plunging 13.15% to close at $223.35. This massive sell-off represents the company's largest single-day decline in over 25 years, catching market participants by surprise. The stock has now plummeted 27% since the start of the month, putting it on track for its worst monthly performance since 1992. While the technical price collapse has rattled investors, some analysts are beginning to evaluate the current levels as a potential long-term buying opportunity. This sharp downturn in a blue-chip technology giant has significant implications for major indices like the XLK and SPY. The scale of the decline highlights heightened volatility within the enterprise technology sector and broader equity markets.