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The history of the S&P500

a year ago, Joel Holliger

Welcome to the first blog post on the Finance Career Board! Today we take an exciting look at the history of the S&P 500, one of the world's most famous indices that measures the performance of the 500 largest U.S. companies.

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The origin of the index (1923):

In 1923, an index of 233 stocks was compiled weekly by Standard Statistics. More values were gradually added to the index, particularly after the merger of Standard Statistics and Poor's Publishing. The index therefore already consisted of 416 companies around 1941.

The Great Transformation (1957):

The real breakthrough came on March 4, 1957, when the S&P 500 was expanded to 500 companies to provide a more comprehensive representation of the U.S. stock market. This change made the index a key tool for investors and analysts.

Historical milestones:

The S&P 500 has experienced numerous ups and downs in its history. It reached its highest increase in one day on March 15, 1933, when it rose by an impressive 16.61%. The counterpart occurred on “Black Monday,” October 19, 1987, when the index fell 20.47%. However, the S&P 500 not only survived this crisis, but also others, such as the oil crisis in the 1970s or the dot-com bubble of the 1990s, with the index proving to be resilient and capable of recovery. The most turbulent phase was probably the financial crisis of 2008, when the S&P 500 recorded dramatic losses. But here too it proved its resilience and after an impressive recovery, investor confidence was regained.

The Tech Revolution (Today):

More recently, technology companies have played an increasingly central role in the S&P 500, reflecting the impact of innovation and digital trends on the global stock market. Leading companies such as Apple, Amazon and Alphabet are now important pillars of the index. Looking forward, the S&P 500 remains a fascinating barometer for the health of the U.S. economy and the global financial system. In conclusion, the history of the S&P 500 is one of adaptability and resilience. As an investor, it is crucial to understand historical developments in order to make informed decisions for the future. So stay tuned for the next exciting phase in the history of this iconic indicator!