Stock markets worldwide are valued at approximately $115 trillion, and the US alone accounts for more than half of it. The sheer magnitude of this number is mind-blowing, considering that China, the second-largest market, holds just $7.2 trillion, a mere 6.3% of the total m-cap. Other major economies like Japan ($5.1 trillion), India ($4.8 trillion), and the UK ($3.7 trillion) are significantly behind. Source