Asset Bubble
What is Asset Bubble?
An asset bubble is a sustained rise in an asset's price far above what its earnings or use value justify, driven by expectations of reselling it higher.
In a bubble, buyers stop paying for what an asset produces (rent, earnings, interest) and start paying for the belief that somebody else will pay more later. Easy credit usually feeds the process, since borrowed money lets buyers bid prices further above fundamental value, and the rising prices appear to prove the optimists right for a while. The rise ends when new buyers stop arriving; prices then fall fast, and the damage spreads through lost wealth, defaults on the debt used to buy, and losses at the banks that lent. A bubble is not the same thing as any large price increase. When a price rises because supply genuinely fell or expected earnings genuinely rose, that higher price is fundamentals working normally.
Asset Bubble: a worked example
Suppose houses in a town normally sell for about 15 times their annual rent, so a house renting for $24,000 a year is worth roughly $360,000. During a boom the same house changes hands at $900,000 while the rent it earns is unchanged, which is 37.5 times annual rent ($900,000 divided by $24,000). Nothing about the house improved. Buyers accepted the price because they expected to resell higher. When credit tightens and new buyers stop appearing, the price slides back toward its rent-based value, and anyone who borrowed near the top owes more than the house is worth.
The mistake students make with asset bubble
Every steep price rise gets called a bubble, and every crash gets treated as proof that one existed. Prices can climb for real reasons, such as a genuine fall in supply or a real jump in expected profits, and those increases are not bubbles. The test is whether the price is supported by the income or use the asset provides, or only by the hope of resale. That is also why bubbles are hard to call before they pop.
Asset Bubble questions
What causes an asset bubble?
Asset bubbles are driven by expectations of further price increases combined with cheap and plentiful credit. Optimism spreads as early buyers make money, which pulls in more buyers and pushes prices further from fundamental value. Loose lending standards make it worse, because they let buyers bid with borrowed money rather than their own.
What is an example of an asset bubble?
Tulip mania in the Dutch Republic, when prices for rare bulbs soared and then collapsed, is the standard early example. Later cases include the boom and bust in internet stocks and the American housing boom that ended in a banking crisis. In each episode prices ran far ahead of any income the asset actually produced.
What is the difference between a bubble and a market correction?
A correction is a moderate decline that pulls prices back toward fundamental value, while a bubble is the run-up that pushed them far above it in the first place. Corrections happen regularly without any bubble behind them. The word bubble describes how the price got so high, not the size of the fall that follows.
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