S&P 500 Index - Selection Criteria

Can Companies Buy Their Way Into the S&P 500?

https://www.fa-mag.com/news/can-companies-buy-their-way-into-the-s-p-500-86298.html

Joining the S&P 500 can transform a company’s fortunes, making confidence in the selection process essential for investors and markets alike. But a new study finds that companies purchasing S&P credit ratings were more likely to be admitted, raising questions about the influence of commercial incentives on firms' inclusion.