What Enron Can Still Teach Us About Diversification
October 20, 2026
Blog | Financial Growth | Life & Planning | Retirement | Tax Planning
Twenty-five years ago this fall, one of America’s most celebrated companies began to unravel.
You probably remember the name.
Enron.
Back in 2000, the energy giant was considered the country’s great success story.
Wall Street was a fan.
Fortune magazine had named it America’s Most Innovative Company for six consecutive years.1
And the stock?
It had soared over the previous decade, making plenty of employees wealthy.
Many had spent years accumulating Enron shares through their retirement accounts. In fact, by the end of 2000, roughly 62% of the company’s 401(k) plan assets were invested in Enron stock.2
With shares soaring, their retirement savings were growing right along with them.
The future looked pretty bright.
Then the headlines started getting ugly.
Enron announced massive financial losses. Its stock plunged as an accounting scandal unfolded.
By December, the company was bankrupt.3
Thousands of employees lost their jobs. Many also watched their retirement savings evaporate.4
Take Tom Padgett.
At 59, he was preparing to retire with more than $600,000 in his retirement account.
After Enron’s collapse, he had roughly $11,000 left.5
Imagine spending decades saving for retirement, only to see nearly everything disappear just as you’re getting ready to enjoy it.
Now, Enron was an extreme case. Most companies don’t collapse in spectacular accounting scandals.
But there’s a lesson here for us 25 years later.
Sometimes having too much of your savings tied up in one company or industry can be a risky proposition.
Think about it. If one stock accounts for a large chunk of your portfolio, a rough patch for that company could weigh on your savings.
And if you’re approaching retirement, you might not have years to wait for a recovery.
Suddenly, that retirement you’ve been looking forward to could be pushed back. Or you might have to rethink some of the plans you’ve spent decades saving for.
So, how do investors end up in this situation?
It can happen gradually.
Like those Enron employees, investors can find themselves in a similar spot without realizing it.
For example…
Maybe you bought shares in a promising company years ago. The stock kept climbing, so you held on.
But as the stock grew, so did its share of your portfolio. Before you knew it, one company accounted for a substantial portion of your savings.
Or perhaps you’ve worked for the same publicly traded company for years, accumulating shares through employee stock grants or options.
Nothing unusual about that.
But now you’ve got a big chunk of your investments tied to the same company that pays your salary.
And here’s another way concentration can build up…
Imagine you own:
- Shares of a high-flying tech company. You bought them a few years ago, and they’ve grown considerably.
- A technology mutual fund. You wanted to spread your money across some of America’s leading technology companies.
- An S&P 500 index fund. A little diversification across hundreds of America’s largest businesses.
That might look pretty diversified.
Well, here’s what some people might overlook.
All three investments could leave you more exposed to one industry than you’d expect.
Your tech fund likely owns several companies benefiting from the AI boom.
And technology stocks now account for more than a third of the S&P 500.6
Add everything together, and you might have a lot more money tied to AI than you realize.
Of course, that doesn’t mean AI stocks are headed for a crash.
But if enthusiasm for the industry cooled, several of your investments could feel it at the same time. Whether that matters depends on your goals, your timeline, and how much fluctuation you’re comfortable with.
What makes this easy to miss?
These investments might look different on paper, even when they’re tied to the same trend.
Now…
I’m certainly not suggesting AI is the next Enron.
But 25 years after the scandal began to unravel, there’s a lesson worth remembering.
Even the most admired companies can run into trouble.
This is something we keep an eye for those we serve. A 401(k) at work, company stock, an old account you’ve held onto for years… those count too. And that’s often where concentration shows up.
If too much of your savings depends on one company or industry, it may be worth taking a closer look.
So, do you know how much of your portfolio is tied to any one company or industry?
It never hurts to double check.
Warmly,
Barry
Sources
- The State Journal Register, 2020 [URL: https://www.sj-r.com/story/business/2020/07/01/money-on-brain-what-you-can-learn-from-enron-scandal/114331786/]
- Congressional Research Service, 2002 [URL: https://www.everycrsreport.com/reports/RS21115.html]
- Britannica, 2026 [URL: https://www.britannica.com/event/Enron-scandal/Downfall-and-bankruptcy]
- PBS, 2002 [URL: https://www.pbs.org/newshour/economy/business-jan-june02-enron_02-11]
- Time Magazine, 2001 [URL: https://content.time.com/time/subscriber/article/0,33009,1001579-4,00.html]
- S&P Global, 2026 [URL: https://www.spglobal.com/spdji/en/indices/equity/sp-500/#data]
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― Warren Buffett