Generally the S&P only adds companies that are profitable (at the time they are added to the index), in addition to several other criteria. (https://qz.com/1587

Generally the S&P only adds companies that are profitable (at the time they are added to the index), in addition to several other criteria. (https://qz.com/1587963/how-the-sp-500-is-built-and-who-decides-what-companies-go-in-it/ https://qz.com/1587963/how-the-sp-500-is-built-and-who-decid...)