> ## Documentation Index
> Fetch the complete documentation index at: https://apidoc.cufinder.io/llms.txt
> Use this file to discover all available pages before exploring further.

# Founded Year Change

> The founded year value changed.

<CardGroup cols={3}>
  <Card title="Signal key" icon="code">
    `founded_year_change`
  </Card>

  <Card title="Category" icon="category">
    Structure
  </Card>

  <Card title="Source" icon="world">
    Company Professional Network page (founded year field).
  </Card>
</CardGroup>

The founded year value changed.

## When it fires

<Card title="Trigger condition" icon="bolt">
  `founded_year` value changes. Usually a data correction; emitted with confidence 0.5 and requires confirmation.
</Card>

## Magnitude

Low, treated as low-confidence by default.

<Note>
  For the full bucket definitions used across percentage-based signals, see [Magnitude buckets](/buying-signals/concepts/magnitude-buckets).
</Note>

## Why it matters

This is usually a data correction, so we set lower confidence and require confirmation. A changed founding year rarely reflects a real event, occasionally it surfaces a merger that reset the founding date, but most cases are corrections.

## How to read it

<CardGroup cols={1}>
  <Card title="Likely correction">
    Most founding-year changes are data fixes.
  </Card>

  <Card title="Low confidence">
    Emitted at 0.5 confidence, requires confirmation.
  </Card>

  <Card title="Rare M&A clue">
    Occasionally reflects a reset founding date post-merger.
  </Card>
</CardGroup>

## Outreach playbook

<Tip>
  Low priority. Confirm before acting; usually a correction.
</Tip>

## Related signals

<CardGroup cols={2}>
  <Card title="Founded Year Added" href="/buying-signals/signals/structure/founded-year-added">
    A previously missing founded year was populated.
  </Card>

  <Card title="Merger Signal" href="/buying-signals/signals/composite/merger-signal">
    Two companies merged under a common new parent.
  </Card>
</CardGroup>

***

<Card title="Track this signal with CUFinder" icon="rocket" href="https://dashboard.cufinder.io/auth/signup" horizontal>
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</Card>