What shares are excluded from free float?

Promoter holdings, government stakes, strategic corporate cross-holdings, employee welfare trusts, and locked-in ESOP shares are excluded from free float.

What is SEBI minimum public shareholding rule?

SEBI mandates that listed non-PSU companies in India maintain a minimum public shareholding (free float) of at least 25%.

How does free float affect Nifty index weightage?

Companies with larger free-float market capitalizations receive higher percentage weightage in the Nifty 50 and Sensex indices.

Can free float change over time?

Yes. Free float increases when promoters sell stakes via Offer for Sale (OFS) or decrease when a company executes a share buyback.

Why does LIC have a low index weight despite a high market cap?

Because the Government of India holds over 95% of LIC shares, leaving under 5% as free float.

What is an Offer for Sale (OFS)?

An OFS is a stock exchange mechanism used by promoters or government shareholders to sell existing shares to the public to dilute promoter holding.

Where can investors verify a stock's free float?

Shareholding patterns are disclosed quarterly on the BSE and NSE websites under the corporate filings section.

MarketsKnowledge BaseFree Float

Indian Stock Market BasicsIntermediate 6 Min Read

What is Free Float? Understanding Publicly Tradable Shares

Understand what free float market capitalization means. Learn the difference between full market cap and free float, and why it is crucial for indices like Nifty and Sensex.

BSE Adoption

2003

Sensex shifted to free-float

NSE Adoption

2009

Nifty aligned globally

Excludes

Promoters

Govt, ESOP, strategic shares

Index Impact

Weightage

Determines Nifty/Sensex weight

Indian Stock Market BasicsIntermediate 6 Min Read

What is Free Float? Understanding Publicly Tradable Shares

Understand what free float market capitalization means. Learn the difference between full market cap and free float, and why it is crucial for indices like Nifty and Sensex.

Free FloatMarket CapIndicesPromoter Holding

Essential Market Insights

1Free float refers to the portion of a company's shares available for public trading — excluding promoter, government, and locked-in holdings.

2Free-Float Market Cap = Share Price × Number of Freely Tradeable Shares (not total outstanding).

3Both the Nifty and Sensex use the free-float methodology to calculate index weightage.

4A company like LIC has massive total market cap but very low free float (government holds 95%+), resulting in lower index weightage.

5Higher free float = better liquidity = less price manipulation.

Key Formula

Free-Float Market Cap = Current Share Price × (Total Shares − Locked-in Shares)

Quick Reference Table

Feature	Full Market Capitalization	Free-Float Market Capitalization
Share Count Used	Total Outstanding Shares (100%)	Only Publicly Tradable Shares
Includes Promoter Holdings?	Yes	No
Index Use	Not used for Nifty/Sensex	Used to calculate Nifty/Sensex weightage
What it Represents	The absolute total value of the company.	The tradeable value of the company in the open market.

Historical Timeline

2003

BSE Adopts Free-Float

The BSE shifts the calculation methodology of the Sensex from full market capitalization to free-float market capitalization.

2009

NSE Aligns Globally

The NSE aligns with global standards by shifting the Nifty 50 calculation entirely to the free-float methodology.

1. What is Free Float Market Capitalization?

Free float market capitalization measures the market value of a company's publicly available tradeable shares.

While full market cap multiplies share price by all issued shares, free float excludes promoter shares, government holdings, strategic cross-holdings, and locked-in ESOPs.

2. Why Major Indices Use Free Float

Indices like Nifty 50 and Sensex use free float methodology to calculate index weights. This prevents companies with massive locked-in government or promoter stakes (like LIC or PSU banks) from distorting index movements relative to actual open market trading liquidity.