“A gale force warning to leaders: at the current churn rate, about half of S&P 500 companies will be replaced over the next ten years,” is one of the key insights from the 2018 Corporate Longevity Forecast. The forecast is conducted every two years by Innosight, the innovation consulting firm co-founded by renowned Harvard professor Clayton Christiansen (who sadly died from cancer on January 23). “The 33-year average tenure of companies on the S&P 500 in 1964 narrowed to 24 years by 2016 and is forecast to shrink to just 12 years by 2027.”
Shrinking company lifespans in the S&P 500 is a useful indicator of marketplace turbulence, driven to a large extent by technology disruptions and business model changes. Every year, companies drop off the list for a variety of reasons. They may have run into hard times and their market cap size fell below a certain threshold, - currently around $6 billion; they may have been overtaken by faster growing firms; or they could have ceased to exist as an independent company due to a merger, acquisition or private equity deal.
According to the Innosight Forecast report, a few key megatrends are responsible for the market turbulence behind the changing makeup of the S&P 500.
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