Definition of ‘Greater Fool Theory
A theory that states it is possible to make money by buying securities, whether overvalued or not, and later selling them at a profit because there will always be someone (a bigger or greater fool) who is willing to pay the higher price.
Investopedia explains ‘Greater Fool Theory
When acting in accordance with the greater fool theory, an investor buys questionable securities without any regard to their quality, but with the hope of quickly selling them off to another investor (the greater fool), who might also be hoping to flip them quickly. Unfortunately, speculative bubbles always burst eventually, leading to a rapid depreciation in share price due to the selloff.

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  1. shinichi Post author

    Greater Fool Theory




    The greater fool theory (also called survivor investing) is the belief held by one who makes a questionable investment, with the assumption that they will be able to sell it later to “a greater fool”; in other words, buying something not because you believe that it is worth the price, but rather because you believe that you will be able to sell it to someone else at an even higher price.

    Some consider it a valid method of making money in the stock market, particularly momentum investors; however, fundamental investors believe that market participants eventually realize that the price level is too outrageous (too high or too low) and the speculative bubble pops. The greater fool theory relies on market optimism and market momentum concerning a particular stock, an industry, or the market as a whole.


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