
An economic bubble (sometimes referred to as a speculative bubble, a market bubble, a price bubble, a financial bubble, or a speculative mania) is “trade in high volumes at prices that are considerably at variance with intrinsic values”.


A stock market crash is a sudden dramatic decline of stock prices across a significant cross-section of a stock market. Crashes are driven by panic as much as by underlying economic factors. They often follow speculative stock market bubbles.