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Anti-dilution rights

Also written Anti-dilution provision

A special shareholder right to buy a proportional number of new shares when a company issues fresh securities, so the shareholder's existing percentage ownership does not shrink.

In plain language

Every time a company issues new shares, the percentage of the company that each existing shareholder owns falls, even though the number of shares they hold does not change — because the same pie is now cut into more slices. This is dilution.

Anti-dilution rights are a special right, given to certain shareholders, to buy a proportional amount of the new shares whenever the company issues more — so that shareholder's percentage ownership stays where it was, instead of shrinking with everyone else's.

How it works

The right is triggered by a future event — a fresh share issue — and it is proportional, not fixed in absolute number: the anti-dilution shareholder is entitled to buy the same percentage share of the new issue as the percentage they already held before the issue happened.

The workbook groups this among the "other rights" shareholders may be given beyond the standard package (ownership, voting, dividend, transfer) — the right to inspect company documents and the right to legal recourse over mismanagement or wrong disclosure are listed alongside it as further examples of such special rights.

A worked example

Mr Bhagat owns 10 lakh shares of Konkan Foods Ltd out of a total 1 crore issued shares — exactly 10% of the company — and he holds an anti-dilution right.

The company decides to raise fresh capital by issuing 20 lakh new shares. Without the anti-dilution right, Mr Bhagat's stake would fall to 10,00,000 ÷ 1,20,00,000 = 8.33% once the new shares are allotted to others.

Because he holds the right, he can instead purchase 10% of the new issue — that is, 2,00,000 of the 20 lakh new shares — for himself. After the issue: he holds 10,00,000 + 2,00,000 = 12,00,000 shares, out of a new total of 1,20,00,000 shares, which is 12,00,000 ÷ 1,20,00,000 = 10% — exactly where he started.

Why NISM asks about it

Chapter 2, section 2.2 (Ownership Rights and other rights), where anti-dilution rights are introduced as one of the "other rights" shareholders can be given beyond the four standard rights of equity ownership. Expect it tested by definition and by a proportional-allotment calculation of the kind above.

Common exam traps

  • The right protects percentage ownership, not the number of shares held — a holder without the right keeps the same number of shares but a smaller percentage; the right exists precisely to prevent that percentage shrinkage.
  • It is a special right given to particular shareholders, not a right every equity shareholder automatically has — do not treat it as a standard feature of all equity capital.
  • Do not confuse dilution protection with a rights issue generally: a rights issue is open to existing shareholders in proportion to their holding as a matter of course; an anti-dilution right is a contractual entitlement some shareholders specifically negotiate for.

Where this is taught

Free preparation for NISM Series II-A

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