Large IPO candidates such as SpaceX may need to wait several years before being added to the S&P 500 Index.

According to Bloomberg, large IPO candidates—including SpaceX—may have to wait several years before being added to the S&P 500 Index. This is because S&P Dow Jones Indices has refused to relax its index inclusion criteria and continues to require companies to post positive net income over the past year, including the most recent quarter.