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SWB
MGeneralUpdated 2 Nov 2026

Market share

Percentage of total market sales that a company controls.

Definition

Market share is the percentage of total market sales that a company controls. Founders reach for it when a vague conversation needs a shared, specific meaning. Name it clearly, then let the next decision — a hire, a price, a test, or a pass — follow from that meaning.

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In the room

How the word shows up in a real conversation.

A mentor asks, “What is your Market share?” The useful answer is concrete: percentage of total market sales that a company controls. A slide title is not an answer.

Common mistake

Using Market share as a label instead of a fact. If you cannot point to the evidence — a number, a customer, or a written assumption — you are using the word as jargon.

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