How is a financial bubble defined, and can it be identified in real-time?
Rapid price increases and high valuation multiples can signal market bubbles, though identifying them remains a challenge. In an era of technological uncertainty, the risk of such bubbles bursting persists. Globes' "Monitor" column explains the core concepts.
Every week, we explain professional terms from the worlds of government and policy that appear in current contexts, with the aim of deepening readers' knowledge of the public system and how it affects their lives. The Monitor is a collaboration between Globes and the Center for Citizen Empowerment. The column, which tracks the implementation of government decisions and legislation, is published every two weeks on Thursdays on the Globes website.
The Term
Financial bubble: A situation in which the price of an asset is higher than the value of the income it is expected to generate, due to expectations of capital gains that are not based on the asset's fundamental factors.
What is a bubble, and how is it created?
A "financial bubble" is an unexplained gap between the estimated value of an asset and the price observed in the market. We know that an asset's price is determined not only by its current value, as it also reflects expectations for future growth. However, in a "bubble" situation, the price detaches from the basic data of the income it is expected to generate, making the asset more expensive than its fundamental value.
This occurs when market expectations for capital gains are not observed in the asset's fundamental factors. The process often begins following technological innovation, regulatory changes, or a low-interest-rate environment that encourages investment. Initially, sophisticated investors identify growth potential and drive prices up. As prices continue to rise, other investors join in, and the investment narrative becomes prominent. In the final stage, asset prices are driven primarily by expectations of continued increases rather than fundamental value.
How do you identify a bubble?
A financial bubble is difficult, if not impossible, to identify in real-time with 100% certainty. However, economists use several indicators: a sharp and rapid rise in asset prices not accompanied by improved fundamental data; extremely high valuation multiples reflecting overly optimistic growth expectations; and herd behavior, where investors base decisions on the actions of others rather than independent economic analysis.
Historical Context
The term "bubble" originated in Britain in 1720 with the enactment of the "Bubble Act," intended to curb speculation surrounding a company that managed the British government's public debt.
In Israel, the most famous financial bubble was the 1983 bank stock crisis, where major banks artificially inflated stock prices to show continuous profits. The public viewed them as a safe investment, but in October 1983, a wave of mass selling began in favor of buying dollars. To prevent a total collapse, the stock exchange was closed for 18 days, the state nationalized the banks, and the crisis cost taxpayers approximately $6.9 billion.
About a decade later, the world experienced the "dot-com bubble." In the late 90s, rapid technological development created a sense of a "new economy." This led to massive investments in internet and technology companies, many of which lacked proven business models. When expectations proved exaggerated, the bubble burst in 2000; stock indices plummeted by tens of percent, and the American economy lost about $5 trillion in asset value.
