The S&P 500 index is the most visible and prestigious broad-based stock index in the U.S. Being included in it means joining an exclusive club that confers prestige on its members, as, for instance, many articles noted when Tesla was included in the index. If there is a “keeping up with the Joneses” effect for corporations, we would expect them to change their policies to fit with their peers once they joined the club. This effect has been studied for individuals but not for corporations, and S&P 500 inclusion offers a good opportunity to do so.
Joining the S&P 500 … Read more