India’s securities regulator has taken an unusually aggressive step that could reshape how advisory firms and global investors handle confidential information. A newly surfaced regulatory notice details alleged insider trading tied to Yes Bank’s 2022 capital raise, drawing in senior figures from some of the world’s most influential firms.

SEBI’s Insider Trading Case Around Yes Bank’s 2022 Share Offering

According to a notice issued by the Securities and Exchange Board of India (SEBI), current and former executives at the Indian units of PwC and EY are accused of violating insider trading rules linked to Yes Bank’s July 2022 share sale. Notably, the regulator has also named executives at U.S.-based private equity firms Carlyle Group and Advent International for allegedly sharing unpublished price-sensitive information.

Meanwhile, the investigation centers on trading activity before Carlyle and Advent acquired a combined 10% stake in Yes Bank for roughly $1.1 billion. The bank’s shares rose about 6% when markets opened following the public announcement on July 29, 2022—an increase that later caught SEBI’s attention during its review of pre-deal share movements.

The notice claims that two executives from PwC and EY, along with family members and close associates, generated unlawful profits by trading Yes Bank shares ahead of the deal. In total, 19 individuals have been accused, with SEBI alleging that seven traded on confidential information while four others shared it.

Compliance Gaps at PwC and EY Under Regulatory Scrutiny

That said, the regulator’s focus extends beyond individual trades to firm-wide compliance systems. SEBI argues that both PwC and EY failed to enforce adequate internal controls designed to prevent the misuse of sensitive information during advisory mandates.

Before the share offering, Advent hired EY for tax advisory services and to assess Yes Bank’s management, while EY Merchant Banking Services worked separately on valuation. Around the same period, PwC was engaged by Carlyle and Advent for tax planning and due diligence. SEBI found that confidentiality safeguards at both firms were insufficient, allowing information to circulate more broadly than permitted.

In EY’s case, the notice states that the firm did not place Yes Bank on a sufficiently comprehensive restricted list, meaning some employees with indirect access to sensitive details were not barred from trading. PwC, meanwhile, was criticized for lacking a restricted stock list altogether for advisory clients, relying instead on disclosure rules that SEBI says failed to capture repeated trades.

Why This SEBI Action Matters for India’s Capital Markets

Importantly, this show-cause notice—SEBI’s first formal step after an investigation—signals a tougher stance on insider trading enforcement in India. If the allegations are upheld, penalties could include financial sanctions or professional restrictions under Indian securities law.

The case is rare in its scope, targeting senior executives at global consulting and private equity firms during a major capital raising transaction. It also arrives as India sees rising equity fundraising and growing interest from overseas investors seeking diversification amid global uncertainty.

Notably, SEBI has stepped up similar enforcement efforts in recent years, including a separate insider trading case involving a major international bank’s Indian unit. Collectively, these actions suggest a clear regulatory message: as India’s markets deepen, expectations around governance, compliance, and information barriers are rising just as fast.