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What is an economic bubble?

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Quick answer

An economic bubble is when the price of an asset — like houses, stocks, or a cryptocurrency — rises far above its real value, driven by hype and speculation. Bubbles eventually 'burst', with prices crashing back down, often causing wider harm.

Key things to understand

  1. Prices climb well beyond what the asset is fundamentally worth.
  2. The rise is fueled by speculation and fear of missing out, not real value.
  3. More buyers pile in, expecting to sell to someone else for even more.
  4. Eventually confidence breaks and prices crash — the bubble 'bursts'.
  5. Famous examples include the dot-com bubble and the 2008 housing bubble.

People also ask

How do you know if something is a bubble?
It's hard to be sure until it bursts. Warning signs include prices detached from real value, frenzied buying, and 'this time is different' thinking — but certainty is rare.
What happens when a bubble bursts?
Prices fall sharply, often fast. People who bought near the top can lose heavily, and big bursts can spread to the wider economy, as in 2008.
Why do bubbles keep happening?
Human psychology — herd behavior, greed, and fear of missing out — repeats across generations, so new bubbles form even though the pattern is well known.
What is an asset bubble?
When an asset's price is driven far above its true value by speculation, before eventually crashing.
What causes asset bubbles?
Hype, easy money, herd behavior, and the fear of missing out drive prices unsustainably high.
What are famous asset bubbles?
The dot-com bubble, the 2008 housing bubble, and historic tulip mania.