Warren Buffett tripled his net worth in his 40’s. Here’s how I could too

Jon Smith goes back to the 1970’s and tracks some of the factors that helped Warren Buffett to make smart investments back then.

The content of this article was relevant at the time of publishing. Circumstances change continuously and caution should therefore be exercised when relying upon any content contained within this article.

Fans of Warren Buffett taking his photo

Image source: The Motley Fool

You’re reading a free article with opinions that may differ from The Motley Fool’s Premium Investing Services. Become a Motley Fool member today to get instant access to our top analyst recommendations, in-depth research, investing resources, and more. Learn More.

When it comes to smart investors, few have achieved the same level of stardom as Warren Buffett has. Even though he’s now in his 90’s, he’s invested wisely over countless decades, increasing his net worth along the way. Yet even when he was in his 40’s, he was still able to triple his net worth via the stock market. Here’s how I can try to emulate his example.

Multi-decade investments

Buffett’s net worth went from approximately $30m to $100m from age 40 to 50. Over the span of the decade a lot happened.

Via his company Berkshire Hathaway, he spent the years buying stock and sizeable shareholdings in several firms that yielded good results. One key point here is that some stocks he bought in the 1970’s are still owned by him today!

An example is GEICO, the insurance company. Buffett invested $4m in the business back in 1976. He kept increasing his shareholding in the firm until 1996, eventually taking over the entire company. In his 40’s, the value of the business increased. Incredibly, the business is still adding to Buffett’s profits today. In the May Q1 report, it reported $703m in earnings.

The point here is that in order for me to generate serious wealth over time, I need to have the right investing mindset. I can often miss out on big returns from stocks by cutting my winners too early and holding my losing ideas for too long. Buying and holding might seem boring, but it’s often the way to gain high profits.

Getting advice from the best

Aged 45, Buffett decided to merge his business with Charlie Munger back in 1976. Munger is another very shrewd investor and has been his right hand man ever since. The advice and help that Munger has proved to be invaluable along the way.

For example, relating to the first point, Munger is quoted as saying that “the big money is not in the buying and selling, but in the waiting.” No doubt he helped Buffett to be patient along the way.

Today, I feel that my chances of increasing my net worth via stocks will be massively helped in listening to other smart investors. The more information I can tap into, the more informed I can be. This relates to specific stock research and also with more general investment advice.

Thinking about the numbers

To triple a net worth in a decade, a lot depends on how much I have to start with! A net worth of £1,000 is easier to triple than if I’m worth £100m (fun fact: I’m not).

Another disclaimer is that I’m not advocating taking high levels of risk in order to generate insane returns in a short space of time.

Yet think about this. What if I’d copied Buffett and invested in a mix of growth and value stocks a decade ago? If my portfolio included stocks such as Apple, Tesla and Microsoft, I’d have easily matched his returns rate.

Jon Smith has no position in any of the shares mentioned. The Motley Fool UK has recommended Apple, Microsoft, and Tesla. Views expressed on the companies mentioned in this article are those of the writer and therefore may differ from the official recommendations we make in our subscription services such as Share Advisor, Hidden Winners and Pro. Here at The Motley Fool we believe that considering a diverse range of insights makes us better investors.

More on Growth Shares

Percy Pig Ocado van outside distribution centre
Investing Articles

Ocado shares plummet 40% in 5 months! Is it one of the best stocks to buy now?

Surging losses and a key customer cancellation have sent Ocado shares plummeting, but is this volatility turning it into one…

Read more »

Investing Articles

1 investment trust from the London Stock Exchange to check out in 2026

Find out why our writer thinks this investment trust -- which holds SpaceX and is listed on the London Stock…

Read more »

Investing Articles

This FTSE 100 growth machine is showing positive signs for a 2026 recovery

FTSE 100 distributor Bunzl is already the second-largest holding in Stephen Wright’s Stocks and Shares ISA. What should his next…

Read more »

ISA Individual Savings Account
Investing Articles

Stop missing out! A Stocks and Shares ISA could help you retire early

Investors who don't use a Stocks and Shares ISA get all the risks that come with investing but with less…

Read more »

Investing Articles

Will Greggs shares crash again in 2026?

After a horrible 2025, Paul Summers takes a look at whether Greggs shares could sink even further in price next…

Read more »

Investing Articles

Here’s why I’m bullish on the FTSE 100 for 2026

There's every chance the FTSE 100 will set new record highs next year. In this article, our Foolish author takes…

Read more »

Thoughtful man using his phone while riding on a train and looking through the window
Growth Shares

UK interest rates fall again! Here’s why the Barclays share price could struggle

Jon Smith explains why the Bank of England's latest move today could spell trouble for the Barclays share price over…

Read more »

Surprised Black girl holding teddy bear toy on Christmas
Investing Articles

Up 20% in a week! Is the Ocado share price set to deliver some thrilling Christmas magic?

It's the most wonderful time of the year for the Ocado share price, and Harvey Jones examines if this signals…

Read more »