S&P 500 Turnover: 90% of the Original Companies Are Gone

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When the S&P 500 launched in 1957, it included 500 of the largest companies in America. Sixty-nine years later, only 53 of them are still on the list. The other 447 were acquired, went bankrupt, or shrank into irrelevance.

That is a 90% failure rate for the most successful companies in the country. And the churn is accelerating.

The Index Replaces Itself Every 15 to 20 Years

Between 1963 and 2014, the S&P 500 swapped out 1,186 companies. That is an average of 23 replacements per year. The historical turnover rate sits at 4.4% annually, according to S&P Dow Jones Indices.

But that rate is not constant. It is speeding up. In 1964, the average tenure of an S&P 500 company was 33 years. By 2020, that number had dropped to 21 years. Innosight, the innovation consultancy founded by Clayton Christensen, forecasts it will hit 12 years by 2027.

If the forecast holds, half the current S&P 500 will be gone by 2037.

The Graveyard: Companies Nobody Remembers

The 1955 Fortune 500 included names like Armstrong Rubber, Cone Mills, Hines Lumber, Pacific Vegetable Oil, and Riegel Textile. None of them exist in any recognizable form today.

Some fell to technological disruption. Kodak invented the digital camera in 1975, then spent 30 years pretending film would survive. Xerox built the graphical user interface and the mouse at PARC, then watched Apple Inc. and Microsoft commercialize both.

Some fell to hubris. Enron was the seventh-largest company in America before it became the largest bankruptcy in history. Lehman Brothers lasted 158 years before collapsing in a single weekend in 2008.

Some just stopped mattering. Sears was Amazon before Amazon existed — catalog retail, financial services, insurance. It had every advantage and squandered all of them. RadioShack sold the first mass-market personal computers, then pivoted to selling phone cases.

DropThe Data: Our database tracks 19,181 companies globally. Of those, only a fraction maintain their peak market position for more than two decades. The pattern is consistent across industries and geographies — growth curves flatten, competitors emerge, and adaptation fails.

2024-2025: The Churn in Real Time

The most recent changes tell the story of where the economy is heading. In 2024 and 2025 alone, the S&P 500 added Coinbase, DoorDash, Datadog, and Carvana. It removed Walgreens, Etsy, Enphase Energy, and FMC Corporation.

The pattern is clear. Out go legacy retail, legacy energy, legacy manufacturing. In come fintech, cloud infrastructure, gig economy, and AI-adjacent platforms.

Six of those eight additions are technology companies. Zero of the removals are.

The Survivors: What Boring Gets Right

The 53 companies that have stayed on the S&P 500 since 1957 are not the ones you would bet on for longevity. They are not flashy. They are not disruptive. They are relentlessly boring.

Procter & Gamble sells soap. It has sold soap for 189 years. Johnson & Johnson sells bandages and baby powder. General Electric makes jet engines and power turbines. IBM reinvented itself three separate times — from hardware to services to cloud.

Coca-Cola sells sugar water. It has sold essentially the same product since 1886 and is worth $260 billion.

The lesson is not that boring companies win. The lesson is that companies with repeat-purchase products and low disruption risk survive. Nobody is going to disrupt toothpaste.

DropThe Data: Among the 19,181 companies tracked in our database, consumer staples and industrial conglomerates show the longest average lifespans. Technology companies show the shortest. The sectors with the highest innovation rates also have the highest mortality rates.

The Three Ways Companies Die

S&P 500 removals fall into three categories, and the ratio tells you something about the economy at any given moment.

Acquisition (most common): Another company buys you. Mars acquired Kellanova in 2025. Chevron absorbed Hess. Capital One swallowed Discover Financial. This is the gentle death — shareholders get paid, the brand sometimes survives.

Market cap decline (accelerating): You shrink below the threshold. This happened to Etsy, Caesars Entertainment, and BorgWarner in 2024-2025. The index committee does not send a warning letter. You just disappear from the list one Friday.

Bankruptcy (rare but dramatic): Enron in 2001. Lehman Brothers in 2008. Sears filing Chapter 11 in 2018. These are the ones that make the news, but they represent a small fraction of total removals.

What This Means If You Own an Index Fund

Here is the thing most index fund investors do not realize: the S&P 500 you own today will be a completely different set of companies in 20 years. That is by design. The index is self-cleaning. Weak companies get removed, strong ones get added. You do not have to do anything.

This is why the S&P 500 returns an average of roughly 10% per year over the long term even though most of its constituent companies fail. The index survives because it is not loyal to any company. It replaces losers automatically.

The 4.4% annual turnover rate means that every 22 years, mathematically, the entire index could be replaced. Your grandparents’ S&P 500 included Kodak, Sears, and General Electric at its peak. Yours includes Nvidia, Meta, and Netflix.

If you work for a company on the S&P 500 today, the historical odds say it will not be there when you retire. Ninety percent of its peers from 1957 are already gone. The companies that replaced them thought they were different. Most of them were not.