HDFC Bank Plunges 8%: Mutual Funds with High Stakes Face Heat

Introduction

HDFC Bank, India's largest private sector lender, experienced a significant stock price decline on March 19, with shares falling over 8% in early trading. The sharp sell-off was triggered by the unexpected resignation of the bank's part-time chairman, Atanu Chakraborty, who cited differences over personal values and ethics. This development has placed a spotlight on the numerous mutual fund schemes that hold substantial positions in the bank, raising concerns about potential short-term volatility in their net asset values (NAVs).

The Sharp Market Reaction

The market's response to the chairman's exit was immediate and severe. The HDFC Bank stock plunged to an intraday low of Rs 772 on the BSE, marking a drop of more than 8%. Although it recovered some ground to trade around Rs 810 on the NSE by noon, it was still down nearly 4% from its previous close. The negative sentiment also affected its American Depositary Receipts (ADR), which fell by over 7% overnight. This decline has made the stock a major drag on benchmark indices like the NIFTY50 and Bank Nifty, contributing to broader market weakness. The stock is now down approximately 18% year-to-date.

Widespread Mutual Fund Exposure

HDFC Bank has long been a core holding for the Indian mutual fund industry, valued for its market leadership and long-term growth prospects. Data as of February 28, 2026, shows that nearly 734 mutual fund schemes collectively held over 3.59 billion shares of the bank. This widespread ownership, while underscoring strong institutional conviction, also means that the stock's sharp downturn has a far-reaching impact across a diverse range of investment portfolios.

Index and Banking Funds Hit Hardest

Thematic and passive funds focused on the banking sector are naturally the most exposed to this volatility. Due to the bank's significant weightage in banking indices, these funds have high, mandated allocations. For instance, ACE MF data reveals that Baroda BNP Paribas NIFTY Bank ETF has the highest exposure at 19.83%. It is followed closely by Axis Nifty Bank Index Fund and Axis NIFTY Bank ETF, both with allocations exceeding 19.7%. Several other Nifty Bank-focused funds also carry exposures in the 19.6-19.7% range, making their performance highly sensitive to HDFC Bank's price movements.

Pressure on Actively Managed Diversified Funds

While high concentration is expected in banking funds, the impact also extends to actively managed diversified equity schemes. Many large-cap, flexi-cap, and tax-saver funds hold HDFC Bank as a top position in their portfolios. Funds with significant allocations are now facing pressure. For example, Mirae Asset ELSS Tax Saver Fund holds 9.71% of its portfolio in the stock, while Mirae Asset Large Cap Fund has a 9.54% allocation. Other prominent funds like Quant Business Cycle Fund (9.50%) and ICICI Prudential Large Cap Fund (9.16%) also have substantial holdings.

AMC-Level Strategies and Exposure

An analysis at the Asset Management Company (AMC) level reveals varied strategies. The total exposure of the mutual fund industry to HDFC Bank stands at approximately Rs 1.3 lakh crore, or 4.2% of total assets. Some AMCs, like Helios MF and Shriram MF, have the highest exposure at around 10%. In contrast, some have maintained a cautious stance. Notably, Quant Mutual Fund had proactively trimmed its position in the bank after August 2023, a move that now appears strategically sound. Other AMCs like Bajaj Finserv MF (1%) and Motilal Oswal MF (1.3%) have kept their exposure relatively low.

Looking Ahead

The sudden leadership change at HDFC Bank has introduced a new layer of uncertainty for investors. While the bank's fundamental strengths remain, the market will be closely watching for further clarification on the reasons for the chairman's departure and the appointment of a successor. For mutual fund investors, particularly those in schemes with high exposure, this event serves as a reminder of concentration risk. The short-term performance of these funds will likely be tied to the bank's ability to navigate this transition and stabilize its stock price. The market will now await further announcements from the bank's board regarding its future leadership and strategic direction.