The S&P 500 is a market index that informs investors and bankers about the health of the economy by tracking the movements of major American companies. The team at Madison Trust Company created a timeline showing us the coming and going of companies from this historic list.
Looking at the timeline, we can see major economic changes from the creation of the S&P in the 50s. We see different industries rise to dominance while others fade. An impressive 53 companies have remained in the index for its entire lifetime.
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