$S&P 500 Index (.SPX.US)$ In order to be adopted as an incor...

$S&P 500 Index(.SPX.US)$ In order to be adopted as an incorporated stock of the S&P 500, it is necessary to meet the following conditions, for example
・Being an American company
・The total market capitalization must be at least 14.6 billion dollars
・Profits have been in surplus for the last 4 consecutive quarters
・Floating shares must be at least 50% of the total number of issued shares