Activist investor.

In plain English

An activist investor takes a position large enough to be heard, then campaigns publicly for change at a company whose strategy, board, or spending it believes is holding the share price down. Typical demands include board representation, selling or spinning off a division, cutting costs, replacing the chief executive, or returning cash through buybacks and dividends. Crossing a beneficial ownership threshold with the intent to influence control requires a public filing that discloses both the stake and the purpose, which is often how a campaign becomes public. Activists rarely hold a majority, so success depends on persuading index funds and other large holders to vote with them.

01Why it matters

When an activist files, the shares often move on that news alone, and the fund managers holding your index exposure become the deciding votes in whatever follows.

02The math, step by step

An activist discloses a 6 percent stake and demands two board seats. To win a vote it needs holders of roughly another 45 percent to agree, which is why the campaign runs through public letters and presentations.

Illustrative example. The amounts here are hypothetical, chosen to show how the math works, not real quoted rates or figures.

03What this is NOT

04Receipts

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