Rate of change (ROC)

Plain-language meaning

ROC expresses the selected price's percentage change from the value a configured number of bars earlier.

Why it is useful

Rate of change (ROC) is useful as descriptive evidence when it is compared on the same definition, source, period, unit and exact listing. It is one input to research, not a verdict.

Where it appears in XMarketRadar

Look for Rate of change (ROC) in Advanced Chart settings, indicator panels, screeners and technical research for the selected listing and bar interval.

How it is calculated or sourced

For configured period N, ROC = (current selected price / selected price N bars earlier − 1) × 100. It is unavailable when the reference price is zero or the history is incomplete.

Inputs, period and unit

Read the disclosed inputs or source, observation period, bar interval, unit, native currency and scale. A value without its source and as-of context is incomplete; unlike units must not be combined.

Worked example

Illustrative only: a user reviews Rate of change (ROC) over a stated 20-bar or FY2026 period, checks the displayed source, unit and as-of date, and keeps an absent field as — rather than guessing 0.

What high and low mean

A higher or lower Rate of change (ROC) value is descriptive, not automatically good or bad. Meaning depends on the instrument, comparison period, method and related evidence.

Positive, negative and genuine zero

Positive and negative Rate of change (ROC) values retain the definition shown here. A genuine reported or computed zero is displayed as 0 and is not the same as missing evidence.

When it is unavailable

Unavailable (—) means Rate of change (ROC) is absent, unsupported, stale under the screen's rules or not computable from verified inputs. It must never be converted to zero or a neutral signal.

Limitations and common mistakes

Rate of change (ROC) may differ by provider definition, observation time, instrument and venue. Common mistakes are dropping units or dates, comparing unlike scopes, and treating a missing value as zero.

Market-specific differences

The concept is used across all supported markets, but currency, price scale, session calendar, source field and regulatory definition can differ. XMarketRadar preserves the exact exchange context.

Related terms

Use the related-term links on this page to compare Rate of change (ROC) with neighbouring definitions while retaining each term's distinct source, unit and limitations.

Suggested next steps

Open the related Technical analysis terms below, then follow the matching Help Centre task guide and inspect Rate of change (ROC) on an exact exchange listing. Confirm source, as-of time, units and unavailable reason before using it in research.

Educational information only; not investment advice or an order service.

This Rate of change (ROC) tutorial is educational and descriptive. It is not investment advice, a price prediction, a recommendation, or an instruction to buy, sell, rebalance or place an order.