HDFC Bank Sell-Off Wipes ₹50,000 Crore From Mutual Funds

Introduction

A sudden and sharp decline in the stock of HDFC Bank, India's largest private lender, has sent ripples across the mutual fund industry. The sell-off, triggered by the unexpected resignation of part-time chairman Atanu Chakraborty, has led to an estimated erosion of ₹50,000 crore in the value of mutual fund holdings. As the single-largest stock holding for the fund industry, this event highlights the significant concentration risk many investment schemes carry and places numerous portfolios under immediate pressure.

The Catalyst for the Plunge

The market's adverse reaction was swift following the news of Atanu Chakraborty's abrupt departure. Citing personal reasons, his resignation rattled investor sentiment, leading to a significant sell-off. The bank's stock plummeted, hitting a new 52-week low of ₹770 per share on the National Stock Exchange (NSE). This represented a decline of nearly 22% from its record high and made the stock a major drag on benchmark indices. With an approximate weightage of 12% in the NIFTY50, HDFC Bank's fall contributed to broader market weakness.

Widespread Impact on Mutual Fund Portfolios

HDFC Bank has long been a cornerstone investment for Indian mutual funds, favored for its market leadership, liquidity, and consistent growth. As of February 2026, the mutual fund industry held shares worth a staggering ₹3.2 trillion in the bank across both active and passive schemes. Data reveals that 735 different mutual fund schemes have exposure to the stock. This widespread ownership means that the stock's downturn has a far-reaching impact, affecting the Net Asset Values (NAVs) of a diverse range of funds, from large-cap equity to hybrid schemes.

Passive and Thematic Funds Hit Hardest

Index funds and Exchange-Traded Funds (ETFs), particularly those tracking the NIFTY50 and banking indices, are among the most exposed to this volatility. Due to the bank's substantial weightage in these indices, these passive funds have high, mandated allocations that they cannot easily alter. For instance, some Nifty Bank-focused funds hold nearly 20% of their assets in HDFC Bank stock, making their performance highly sensitive to its price movements. The table below shows the significant exposure of top passive funds.

Pressure Mounts on Actively Managed Funds

The impact is not confined to passive funds. Many actively managed diversified equity schemes, including large-cap, flexi-cap, and ELSS (tax-saver) funds, hold HDFC Bank as a top portfolio position. Nearly 50 active schemes had over 9% of their corpus invested in the stock as of February, placing them close to the regulatory limit and under significant pressure from the sell-off. Funds like Parag Parikh Flexicap Fund and ICICI Prudential Large Cap Fund have some of the highest exposures in absolute terms.

The Regulatory Handcuff: SEBI's 10% Rule

A key challenge for fund managers of active schemes is the regulatory cap imposed by the Securities and Exchange Board of India (SEBI). Barring certain thematic funds, active schemes are not permitted to allocate more than 10% of their assets to a single stock. With many funds already holding HDFC Bank near this threshold, their ability to deploy fresh capital and average down their cost by buying more shares at lower prices is severely limited. This regulatory constraint prevents them from taking full advantage of the price correction.

Broader Market Context

The stock was already facing headwinds before this event. It has been an underperformer over the past few years, especially following the complex merger with HDFC Ltd, the benefits of which are yet to fully materialize. The bank has been grappling with asset-liability mismatch issues, and the post-merger deposit profile remains under pressure. The chairman's resignation has added a layer of leadership uncertainty to these existing concerns, further dampening investor confidence, including that of foreign institutional investors who also hold significant positions.

Analysis and Outlook

The HDFC Bank sell-off serves as a stark reminder of concentration risk within the mutual fund industry. The bank's status as a 'must-own' stock for many has now become a source of portfolio-wide volatility. The event underscores the interconnectedness of the market, where a single company-specific event can have a cascading effect on millions of retail investors through their mutual fund holdings. Looking ahead, the short-term performance of a large number of equity funds will be closely tied to HDFC Bank's ability to stabilize its leadership and regain investor trust. Market participants will be closely watching for any announcements regarding management succession and strategic direction to gauge the bank's future trajectory.