Why Accenture's Warning Triggered a ₹1.35 Lakh Crore IT Sector Meltdown

A massive sell-off in Indian IT stocks has wiped out ₹1.35 lakh crore in investor wealth in a single session, triggered by a cautionary revenue guidance cut from global tech giant Accenture. The crash has sent shockwaves through Dalal Street, as investors grapple with fears of decelerating demand and structural disruptions caused by Artificial Intelligence.

The Accenture Shockwave: A Catalyst for Chaos

The carnage began on Wall Street, where Accenture shares plummeted 18% following its third-quarter earnings release for the May 2026 quarter. While Accenture reported Q3 revenue of $18.7 billion—a 3% year-on-year increase in constant currency—the underlying data painted a grim picture for the industry.

Crucially, Accenture lowered the top end of its full-year FY26 revenue growth guidance by 100 basis points to a range of 3–4%, down from 3–5%. High-value consulting growth remained stagnant at just 1% year-on-year due to significant delays in discretionary spending. This downward revision directly contradicts the growth acceleration expectations that Indian IT majors like TCS and Infosys were banking on.

Impact on the Indian IT Landscape

The ripple effect on the Nifty IT index was immediate and brutal, with the index crashing 6%. The combined market capitalization of all Nifty IT stocks tumbled to ₹21.57 lakh crore. Individual stock performance showed deep distress:

  • Infosys: The top loser, falling over 8%.
  • Major Players: TCS, Tech Mahindra, Mphasis, LTIMindtree, HCL Tech, and Persistent all saw declines ranging between 5% and 6%.

This single-day rout has pushed the Nifty IT index's calendar year losses to a staggering 29%, reflecting mounting structural fears that generative AI might replace the fundamental need for traditional IT services.

Structural Fears: AI and Geopolitical Headwinds

Analysts are highlighting a "perfect storm" of factors weighing down the sector. Jefferies noted that the top-five Indian IT firms are currently trading at a 70% premium to Accenture, suggesting significant downside risks to valuation multiples. Furthermore, outsourcing bookings have reportedly dropped by 14.7% year-on-year.

AIだけでなく、地政学的緊張が不確実性を高めています。野村証券は、中東紛争が2027年度上半期にかけて収益や案件受注に影響を及ぼすと指摘しており、特に自動車などのセクターに影響が出る見込みです。

AIへの移行は長期的な機会をもたらす一方で、モティラル・オズワル（Motilal Oswal）は、これらの収益が以前と同じように従来のベンダーに還元されない可能性があると警告しています。新たな「AIネイティブ」なベンダーの形態が出現しており、既存の巨大企業は、プラットフォーム化されたAIの世界に従来のビジネスモデルを適応させようと苦闘する中で、苦痛を伴う移行期間を強いられる可能性があります。

主なポイント

  • 収益見通しの下方修正: アクセンチュアによる2026年度のガイダンス引き下げは、成長鈍化の兆しを示しており、インドのIT市場における時価総額が1.35兆ルピー（₹1.35 lakh crore）も消失する事態を招きました。
  • バリュエーションへの懸念: インドの主要IT企業はアクセンチュアと比較して大幅なプレミアムで取引されており、さらなるディレーティング（評価下げ）や利益予想の下方修正への懸念が高まっています。
  • 構造的な変化: 生成AIの台頭と、クライアントの支出が裁量的なプロジェクトから実際のAIユースケースへとシフトしていることが、従来のシステムインテグレーターにとっての競争環境を根本的に変えつつあります。