Indian IT stocks witnessed a massive sell-off on February 4, 2026, marking the sector's worst single-day performance since the pandemic onset in March 2020. The Nifty IT index plummeted approximately 6% to 7%, wiping out nearly ₹2 lakh crore in investor wealth in a single session. The downturn was triggered by a global tech rout following the launch of Anthropic’s "Claude Cowork" and its specialized legal automation plugins. This "agentic" AI platform can plan, execute, and review complex multi-step tasks such as contract reviews, compliance tracking, and legal briefings. Investor anxiety stems from the potential for AI to move beyond being a productivity assistant to becoming a direct substitute for the human-led services that form the backbone of Indian IT revenue. **Performance Summary** The Nifty IT index hit an intraday low of 35,909, with every major constituent ending in the red. The correction was led by heavyweight firms, reflecting a structural repricing of the sector rather than company-specific issues. Infosys and Tata Consultancy Services (TCS) bore the brunt of the sell-off. Infosys shares tumbled over 8% during the session, while TCS fell approximately 7%. Wipro also faced significant pressure, closing down nearly 4.5%. Mid-cap and specialized software players were not spared. Persistent Systems dropped 7.5%, and LTIMindtree saw a decline of over 8%. The negative sentiment extended to the US markets, where American Depository Receipts (ADRs) of Infosys and Wipro fell by as much as 3.3% in overnight trade. **Market Drivers and Trends** Market analysts point to the democratization of sophisticated automation as a key threat to traditional pricing power. Anthropic’s new tools allow corporate teams to handle high-volume, routine tasks—previously outsourced to Indian service providers—internally and at a fraction of the cost. The disruption is particularly acute for Business Process Outsourcing (BPO) and data analytics segments. These divisions rely on repetitive, rules-based workflows that are now easily replicable by AI agents. While the $283 billion Indian IT industry has survived previous technological shifts, the speed of this "agentic AI" adoption has forced a reassessment of headcount growth and margin sustainability. **Looking Ahead** Volatility is expected to persist as markets evaluate how quickly global clients adopt these autonomous tools. Large IT firms with strong balance sheets are attempting to pivot by integrating AI into their own service delivery, but the immediate pressure on valuations remains high. The sector currently faces a challenging environment where clients are increasingly focused on cost-cutting through automation rather than traditional labor-intensive transformation projects.