Large Cap, Mid Cap & Small Cap

In India, large caps are the top 100 companies by average market capitalisation, mid caps are ranks 101–250, and small caps are rank 251 onwards — a classification maintained by AMFI and refreshed every six months for mutual-fund purposes.

The ranking exists because SEBI's mutual-fund rules require, for example, a 'large-cap fund' to hold mostly large-cap stocks — so the industry needed one official list. AMFI publishes it half-yearly using average market capitalisation over the preceding six months, and stocks migrate between buckets as their values change.

The buckets behave differently. Large caps are liquid, heavily institutional and better researched; small caps are thinner, more retail-driven, more volatile, and far more sensitive to individual corporate announcements. The same piece of news — an order win, a pledge, a resignation — typically moves a small cap much more than a large cap.

The half-yearly reclassification itself is an event: stocks promoted into the mid- or large-cap lists can see buying from funds that are now allowed (or required) to own them.

Related terms

Educational content, not investment advice. Regulations and tax rules change — verify current rules before acting.