Record Date vs Ex-Date (Detailed)
The record date is the date on which a company determines the list of eligible shareholders for a corporate action (dividend, bonus, rights issue, or split), while the ex-date — in India's T+1 settlement cycle — is set one trading day before the record date, meaning that a buyer must purchase shares at least on the ex-date to be credited on time and qualify for the corporate action.
Understanding the relationship between the record date and the ex-date requires understanding the equity settlement cycle operating in India. India moved to a T+1 settlement cycle in a phased manner, with all NSE and BSE stocks transitioning to T+1 by January 2023. Under T+1, a trade executed on Trade day (T) results in the buyer's demat account being credited with shares on T+1 (one business day after the trade). This is the operative rule that defines the ex-date.
The record date is fixed by the company and disclosed to the stock exchanges as the date on which the company will review its registry of shareholders to determine who is entitled to receive the benefit of the corporate action. If you are holding shares in your demat account as of the close of business on the record date, you qualify for the benefit.
The ex-date is derived from the record date by working backwards by one trading day (under T+1) or two trading days (under T+2, which was the prior settlement cycle). Under T+1 settlement: if the record date is Tuesday, the ex-date is Monday. A buyer who purchases shares on Monday (T) will receive them credited by Tuesday (T+1), just in time to be on the register as of the record date. A buyer who purchases on Tuesday or later will receive the shares on Wednesday at the earliest — after the record date — and will not qualify. Therefore, Monday is the ex-date; from Monday onwards, shares trade 'ex' (without the entitlement).
Practically, the exchange automatically adjusts the market price on the ex-date to reflect the entitlement being detached. For a dividend, the adjusted price equals the previous closing price minus the per-share dividend amount. For a bonus issue with a 1:1 ratio, the adjusted price equals the previous closing price divided by 2. For a stock split at a 1:2 ratio, the adjusted price equals the previous closing price divided by 2. These adjustments are theoretical; actual opening prices on the ex-date are driven by market supply and demand, and may deviate from the adjusted price based on investor sentiment about the corporate action.
The transition from T+2 to T+1 settlement in India required updating the ex-date convention from 'record date minus 2 trading days' to 'record date minus 1 trading day.' This change was significant for investors who had memorised the older T+2 convention and applied it mechanically to determine the last date to buy shares to qualify for a corporate action. Brokers and investor platforms updated their corporate action calendars accordingly. For investors in foreign markets (which still largely operate on T+2), the Indian T+1 convention can cause confusion when comparing across jurisdictions.