All factors
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Spin-off or divestiture

🤝 M&A
▲ Usually bullish

A division is separated into an independent company or sold off.

Typical size

2-8% on announcement

Timeframe

Announcement pop; the real value shows over 1-2 years

Evidence

0 logged events

Why it moves the price

Separating businesses lets each be valued on its own economics rather than a conglomerate average, and gives each management team focused incentives.

What separates a good call from a naive one

Spin-offs are often forced sellers' events — index funds dump the smaller entity mechanically at separation, which historically creates opportunity in the spun-off shares. Check which entity keeps the debt.

Measured impact

Not enough evidence yet

Every logged event is measured against real closing prices: the move from the close before the event, compared with the S&P 500 over the same window.

Next day

Not measured yet

After 1 week

Not measured yet

After 1 month

Not measured yet

Textbook view:▲ Usually bullishtypically 2-8% on announcement

No measured verdict yet — 0 events logged. Three or more are needed before the data says anything useful.

The evidence (0)

Every row is a real event, measured against actual closing prices.

No events logged yet. Add the first one — the price impact gets measured automatically.

Measured from historical closing prices. Past reactions do not guarantee future ones. Not financial advice.