When a company is removed from the S&P 500 index, its shares may face selling pressure as index funds and ETF adjust their portfolios. However, being removed does not automatically mean that the company is on the decline, nor does it guarantee that its stock price will plummet.
The S&P 500 index tracks approximately 500 leading American companies. As companies grow, shrink, merge, or no longer meet certain requirements, the composition of the index will change.
For investors, the most direct consequence is usually a change in "which funds must be invested in this stock," rather than any changes in the company's underlying business itself.
Why would a company be removed from the S&P 500?
S&P Dow Jones Indices Company maintains this benchmark index in accordance with the published qualification rules and the decisions of its Index Committee.
Companies may be removed due to acquisition, bankruptcy, delisting, or major restructuring. If a company's circumstances no longer support its continued inclusion in the index, its shares may also be deleted.
However, falling below the initial inclusion threshold does not automatically trigger removal. Usually, efforts are made to avoid unnecessary and frequent adjustments.
According to the official methodology of the S&P U.S. Indexes, companies that are removed from the S&P Composite 1500 Index family typically have to wait at least one year before they will be considered again for inclusion.
The reverse process is explained by Coinpaper in their guide on how to be included in the S&P 500.
Will stocks fall after they are removed from the S&P 500?
Being removed from an index may lead to selling pressure, as the design goal of passive investment funds is to track the components of that index.
When a company is removed, the ETF that tracks the S&P 500 must remove its shares from the portfolio to maintain an accurate exposure to the index.
Such sales may increase trading volume and could potentially push down stock prices, especially around the time of the official removal and effective date.
However, a decline in stock prices is not inevitable.
Active investors, hedge funds, and other institutions may take on these stocks. Some traders will also make arrangements in advance before the official implementation of the index exclusion.
What will happen to the stocks you hold and the S&P 500 ETF?
If you personally hold shares in a company that has been removed from the S&P 500, your holdings will not change automatically.
Unless there is a merger, bankruptcy, or some other corporate action that changes your rights to hold shares, you will still be holding the same stocks.
This stock can also continue to be traded on its original exchange.
But for investors in the S&P 500 ETF, the situation is different.
Funds such as SPY, VOO, and IVV will adjust their positions to reflect changes in the underlying index.
These combination adjustments are part of the regular maintenance of the index and do not require any action from ETF investors.
Can a company that has been removed rejoin the S&P 500?
Yes. If a company ultimately meets the applicable requirements and is selected to be included, it can return to the S&P 500.
However, even if its financial condition or market value improves, re-inclusion does not occur automatically.
Index membership ultimately depends on the company's eligibility for inclusion and the decision of the committee.
As Coinpaper explains in their analysis of the concentration in the S&P 500, membership also determines how much influence a company can have on this benchmark index.
For shareholders, the key difference is simple: being removed from the S&P 500 changes the demand for a particular stock, but it does not directly affect the company's earnings, assets, or business prospects.
In the long run, performance ultimately depends more on these fundamentals, rather than just membership in the index itself.
