Software stocks took a nosedive on Thursday, plunging into a bear market as investors grew wary of the potential disruption of AI on traditional business models. The iShares Expanded Tech-Software Sector ETF (IGV) tumbled by around 5% in the morning, marking its steepest one-day decline since April 2023. This downturn has pushed the software industry into bear-market territory, highlighting the rapid shift in sentiment towards one of Wall Street's former darlings. The fund is now down a staggering 21% from its peak, with a month-to-date decline of nearly 14%, on pace for its worst month since October 2008. This trend is particularly concerning given the solid earnings from industry leaders like ServiceNow, which saw its shares plummet by over 11% on Thursday. Despite topping Wall Street's fourth-quarter earnings expectations and issuing better-than-expected guidance, ServiceNow's performance was deemed 'good, but not good enough' by Morgan Stanley analysts, who noted the heightened skepticism towards incumbent application vendors. The pressure is mounting across the sector as investors grapple with the possibility of AI competitors and automation tools eroding demand for traditional software licenses and workflows. This has led to a reevaluation of valuations, once justified by steady subscription growth, as investors consider the potential for AI to permanently reduce long-term revenue potential. The sell-off didn't stop at software stocks; megacap tech giant Microsoft also took a hit, sliding by about 10% after reporting a slowdown in cloud growth for the fiscal second quarter. This decline marked its steepest one-day drop since March 2020, and the company issued softer-than-expected guidance on operating margin for the fiscal third quarter. The rapid pace of AI development, exemplified by Anthropic's recent release of Claude Opus 4.5, has further fueled investor unease. This rapid release cycle, with three major model launches in just two months, has raised concerns about the potential for AI to displace software vendors. However, ServiceNow CEO Bill McDermott offered a counterpoint during the company's earnings call, asserting that the real payoff comes from integrating AI into workflows where business decisions are made. He emphasized ServiceNow's role as the semantic layer that makes AI ubiquitous in the enterprise, ensuring consistent business outcomes despite the probabilistic nature of AI systems.