Equity Shares, Structure, Rights and Corporate Actions

Equity is the most basic financial instrument there is, and the one whose mechanics are most often misunderstood. Most investors know a share is a piece of the company. Fewer know what rights that piece carries, or what happens to it when the company announces a bonus, a split, a rights issue, a buyback or an ESOP grant.

This matters for more than exam answers. Corporate actions change the share count in your demat, the price on your screen and sometimes your tax bill. Sometimes your returns look better than they are because of a split; sometimes worse because of dilution you never noticed. Here is what happens under the hood, with the rules as they stand in October 2026.

Ordinary shares vs preference shares

Two main kinds of shares exist in Indian markets. When people say shares or equity, they almost always mean ordinary shares, also called equity shares.

A third variant exists for some new economy companies: shares with superior voting rights held by founders, which SEBI allows under strict conditions. For a systematic investor buying listed equity, you will almost always be dealing with ordinary shares. Preference shares matter more when you read the liability side of a balance sheet.

What equity ownership actually means

Say you own 100 shares of a company with 500 crore shares outstanding. You own 0.000002% of it. Tiny, but it carries real rights:

• A proportional claim on dividends. If the company declares ₹10 a share, you receive ₹1,000. Dividends are taxed at your slab rate, and the company deducts 10% TDS once your dividends from it cross ₹10,000 in a financial year.
• Voting rights. One vote per share on directors, major transactions and capital raises, including by e voting.
• A residual claim in liquidation. After lenders, creditors and preference holders are paid, ordinary shareholders share whatever is left.
• Pre emption rights. When the company issues new shares to raise money, existing holders are usually offered them first, in proportion, through a rights issue.

The five major corporate actions

Companies regularly take actions that change their share count or their price. Every one of them affects how you read your portfolio.

1. Bonus shares

A bonus issue gives shareholders extra shares free, in a fixed ratio, funded by converting reserves into share capital. A 1:1 bonus doubles your share count and roughly halves the price. Your total value does not change on the day.

Why do it? A company with large reserves can signal confidence, and a lower share price can widen retail participation and liquidity. Nothing about the business changes. If a stock rises after a bonus, it rises for other reasons.

2. Stock splits

A split increases the number of shares by reducing the face value. A ₹10 face value share split into ten becomes ten shares of ₹1 face value, and the price adjusts by the same factor. The economic result is the same as a bonus; the accounting entry differs, because no reserves move.

3. Rights issue

A rights issue lets existing shareholders buy new shares, usually at a discount, in proportion to their holding. A 1 for 5 issue at ₹500 when the market price is ₹700 means you can buy one new share for every five you hold.

• Subscribe: pay ₹500 a share and keep your ownership percentage.
• Renounce: sell your rights entitlement. Since 2020 rights entitlements are credited to your demat and trade on NSE and BSE during the issue period.
• Let them lapse: do nothing, and your ownership is diluted with no compensation.

4. Buybacks

In a buyback the company buys its own shares and cancels them, so each remaining share is a larger slice of the business. SEBI phased out open market buybacks through the stock exchange from 1 April 2025, so listed company buybacks now run as tender offers: the company names a price, usually above the market, and shareholders tender shares in a set window. A part of every buyback is reserved for small shareholders, those holding shares worth up to ₹2 lakh on the record date, which is why their acceptance ratios are often higher.

The tax treatment has changed twice in two years, and it decides whether a buyback is worth tendering into.

Read the bars slowly. From 1 October 2024 to 31 March 2026 the whole buyback amount was taxed as dividend at your slab rate, and your purchase cost became a capital loss you could only use against other gains. From 1 April 2026 buybacks are taxed as capital gains again, on the gain alone, while promoters pay an additional levy, taking their effective rate to 30%, or 22% for promoter companies, so buybacks cannot be used to avoid dividend tax. The same tender can cost a 30% slab taxpayer ₹36,000 or ₹5,000 depending only on the date.

5. ESOPs, employee stock option plans

ESOPs give employees the right to buy shares at a set exercise price, usually below the market. When options are exercised, new shares are issued and existing shareholders are diluted. Of all corporate actions, this is the one retail investors underestimate most.

A company with ₹100 crore of profit and 1 crore shares has earnings per share of ₹100. Issue 10 lakh shares on ESOP exercise and the share count becomes 1.1 crore, so EPS falls to about ₹90.9 on the same profit. Always read diluted EPS, not just basic EPS, for companies with large option programmes, which is common in technology and newly listed companies.

Dividends and the record date

1. Day 0Board recommends or declares a dividend

   Disclosed to NSE and BSE as a corporate announcement.

2. Record dateEx date and record date are the same day

   Under T+1 settlement, you must have bought by the previous trading day to be on the register.

3. Ex date openPrice drops by about the dividend

   The cash leaves the company, so the share is worth that much less.

4. Within 30 daysDividend paid to your bank account

   The Companies Act requires payment within 30 days of declaration, net of any TDS.

The price drop on the ex date is the part most people forget. Buying a stock the day before the record date to "catch" a ₹10 dividend usually gets you ₹10 of taxable income and a share worth roughly ₹10 less. That is not income; it is converting capital into a taxed payment.

How corporate actions affect back tests and factor signals

A stock at ₹2,000 before a 1:1 bonus appears to fall 50% the next morning. It is not a loss; it is a mechanical adjustment. Any back test or factor model that does not adjust past prices for corporate actions will read that day as a crash and sell, or will compute a 12 month return that is wrong by half.

The fix is an adjustment factor. For a 1:1 bonus every price before the ex date is multiplied by 0.5; for a 1 for 5 rights issue at ₹500 on a ₹700 stock it is the ratio of the ex rights price to the last price, 666.67 / 700 ≈ 0.952. Data providers apply these factors to produce adjusted series. Raw exchange files, such as the daily bhavcopy, are unadjusted, so check the corporate action list for any day with a move above 20% before trusting a return.

Common mistake: ignoring corporate action notices

The most common and most expensive mistake is not reading corporate action emails. Rights entitlements lapse, buyback tender windows close, and the small shareholder reservation goes to people who did read. Each of these is money left behind for no reason.

The second mistake is judging a stock's performance from an unadjusted chart. A share that "fell from ₹2,000 to ₹1,100" may have done a 1:1 bonus and actually risen 10%. Before you react to any price history, check the corporate actions for that stock on the NSE or BSE website.

How this shows up in RupeeCase

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