Stock Market Glossary

Market impact

Price move that an investor’s own large buy or sell order can cause.

In brief: Price move that an investor’s own large buy or sell order can cause.

Meaning in practice

Market impact rises when an order is large relative to available liquidity. In small caps or stressed markets, visible order-book liquidity can disappear quickly; splitting and limiting an order can reduce execution risk.

Context for investors and traders

For traders, this term is most useful when preparing and executing an order. Its meaning depends on the venue, liquidity, time frame and order type. A single reading is not a reliable buy or sell decision.

How to use this in practice

Use the term first to describe the situation and add verifiable data: time frame, benchmark, costs and liquidity. Only then does it become an assessment that can be connected to an investment objective and risk budget.

What to keep in mind

Avoid false precision. Many market terms describe probabilities or historical patterns; they neither guarantee a return nor replace the review of a specific security.

What does Market impact mean in simple terms?

Price move that an investor’s own large buy or sell order can cause.

When is this term relevant to investors?

Assess the term together with price, costs, position size and a predefined loss limit. That turns a market observation into a traceable framework rather than an automatic trading rule.

What should I check before acting on Market impact?

Avoid false precision. Many market terms describe probabilities or historical patterns; they neither guarantee a return nor replace the review of a specific security.

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