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Plain-English definition

What is Beta?

Beta estimates how sensitively an investment moved relative to a selected market benchmark.

Reviewed by Kshitij Jain, Principal Officer · SEBI Investment Adviser INA000022172 · Updated 24 October 2026

How Beta works

A beta near 1 means its historical movements were similar in magnitude to the benchmark; above 1 indicates larger movement and below 1 indicates smaller movement. It is not a measure of every kind of risk and is unreliable with an unsuitable benchmark.

The figure should always be read with its measurement period, product type and source. A precise-looking number can still answer the wrong question when two unlike products or time periods are compared.

An example

A beta of 1.2 suggests that a 10% benchmark move was associated with roughly a 12% move, on average within the fitted history, not on every day.

Why it matters for your family

Beta helps explain portfolio behaviour, but a household should also consider concentration, liquidity, goal horizon and how losses would affect the plan.

Connect the figure to a dated goal before acting. Money for an emergency or near-term payment has different constraints from retirement money, even when the product description quotes the same statistic.

Questions people ask

What does Beta mean?
Beta estimates how sensitively an investment moved relative to a selected market benchmark.
Why does Beta matter for a family?
Beta helps explain portfolio behaviour, but a household should also consider concentration, liquidity, goal horizon and how losses would affect the plan.
Does a good Beta figure guarantee a result?
No. It is a measurement of past or assumed conditions. Its meaning depends on the period, data and products being compared, and it cannot guarantee a future outcome.
Where can I verify information about Beta?
Start with SEBI Investor, linked on this page, and the current official document for the product or tax year involved.

This page is general education, not personalised investment or tax advice. Rules can change; verify current official documents before acting. Investment in securities markets is subject to market risk.