Underlying
The underlying is the asset, rate, index or reference to which a derivative contract is linked.
Plain-language meaning
The underlying is the asset, rate, index or reference to which a derivative contract is linked.
Why it is useful
Underlying 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 Underlying in Futures, Option Chain, Options Screener and derivative study tables for a selected underlying and contract.
How it is calculated or sourced
Underlying is sourced or derived according to the definition shown above and the screen's disclosed provider, inputs, window and as-of time. Missing required inputs produce an unavailable result.
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 Underlying 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 Underlying 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 Underlying values retain the definition shown here. A genuine reported or computed zero is displayed as 0 and is not the same as missing evidence.
Limitations and common mistakes
Underlying 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
Contract size, exercise style, expiry, settlement, price unit and trading rules vary across all supported markets. Always use the selected contract specification.
Suggested next steps
Open the related Derivatives terms below, then follow the matching Help Centre task guide and inspect Underlying 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 Underlying 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.