Market impact

Market impact is the price movement caused by one's own trading. Managing it is the central problem of institutional execution, and manufacturing it in the opposite direction is the point of momentum ignition.

market microstructure · updated 2026-10-16

Where does market impact come up?

This term is used in the following manipulation techniques, each explained in full on its own page.

• Momentum ignition — Momentum ignition is entering a burst of aggressive orders designed to trigger other participants' momentum strategies, creating a price move the initiator then trades against.

Enforcement actions involving these techniques

See also

• Slippage — Slippage is the difference between the price expected when an order was sent and the price actually achieved. Persistent slippage …
• Liquidity — Liquidity is the ability to trade a meaningful size quickly without moving the price much. It is not a single number: it combines …

Terms that refer here

Liquidity · Momentum ignition · Slippage

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