Ex-Dividend Date

The ex-dividend date (ex-date) is the date on or after which a stock trades without the entitlement to the most recently declared Dividend. To receive a dividend, you must buy the stock before the ex-date — buying on or after the ex-date means the dividend goes to the seller.

In India, with the T+1 settlement system (effective January 2023), you must buy the stock at least one business day before the record date to appear on the shareholder register. The ex-date is typically one business day before the record date. For example, if the record date is 15 April (Tuesday), the ex-date is 14 April (Monday), and you must buy on or before 11 April (Friday, the previous trading day) to be eligible.

On the ex-date, the stock price adjusts downward by approximately the dividend amount. If HDFC Bank closes at Rs 1,650 on the day before ex-date with a declared dividend of Rs 19.50 per share, it would open at approximately Rs 1,630.50 on the ex-date (all else being equal). This adjustment is reflected in the exchange's adjusted opening price and prevents Arbitrage from buying just for the dividend.

Despite this price adjustment, dividend capture strategies are popular among some Indian traders. They buy shares just before the ex-date, receive the dividend, and sell shortly after, hoping the stock recovers its pre-ex-date price quickly. In practice, this strategy has mixed results because: (1) the price adjustment is efficient, (2) dividend income is now taxed at slab rates (up to 30%), and (3) STCG tax at 20% applies if the stock is sold within 12 months.

For long-term investors, the ex-date is mainly relevant for planning. If you were going to buy a stock anyway, buying before the ex-date gives you the dividend but also a lower cost basis (after the adjustment). Buying after the ex-date misses the dividend but gives you a lower entry price. Over long holding periods, the timing makes no material difference — Compounding and business fundamentals matter far more than capturing individual dividends.