Can your investments survive a 50% loss? Use the reliable Buffett and Munger strategy

Charlie Munger, a former Berkshire Hathaway (BRK.A, BRK.B) vice chairman and Warren Buffett’s longtime right-hand man, said investors should be prepared for a brutal reality: If you can’t sustain a 50% decline in your investment portfolio, you’ll never achieve exceptional results.

While many hope for an easy path to wealth, Munger’s rule remains one of the most obvious and challenging tests for anyone serious about investing in stocks for the long term.

The 50% drop test that separates the winners from the losers

“You could argue that if you’re not willing to respond with equanimity to a 50% fall in market prices two or three times a century, then you’re not qualified to be a common shareholder, and you deserve the mediocre outcome you’re going to get,” Munger told the BBC in 2009. Facing such a massive decline is not just a matter of theory – during the 2008 financial crisis, Berkshire Hathaway shares lost more than half their value, as did countless other high-quality companies.

“Down 50% isn’t fun, but it’s part of investing,” said Taylor Kovar, certified financial planner and CEO of 11 Financial. Investopedia. “If you’re going to stick with it long enough to see real growth, you have to be able to stick around when the going gets tough. The rule is simple but forces investors to confront their true risk tolerance, especially during panic markets.

Why do so many investors fail to apply the brutal Munger standard?

Historically, even the strongest performing companies in the market have faced deep declines. As Kovar explained, “Berkshire Hathaway, Amazon, and Apple all saw 50% declines at one point. That doesn’t mean they were bad investments. It means the market goes through cycles.”

However, most investors sell during these declines, lock in losses and miss the eventual recovery. Munger’s view: Great investing means surviving temporary pain, trusting fundamentals, and remaining unaffected by volatility.

Preparation is everything. “We’re focusing on some basics,” Kovar said. “Make sure there is no single investment that can ruin the whole plan. Keep some liquidity so there is no pressure to sell at a bad time. And always have a plan ready before the market starts to swing.”

Training on insights from behavioral finance can help investors maintain perspective when the headlines get scary, Covard said. He also noted that knowing when to avoid a decline versus when to cut losses depends on fundamentals. “If a company still has strong leadership, a healthy balance sheet, and long-term potential, a dip could be a buying opportunity. But if something fundamental changes… it may be time to move on,” Kovar said.

The cost of playing it too safe

Many investors, concerned about volatility, choose safer assets over stocks. However, over time, excessive caution can undermine wealth creation. Munger made his points because those who cannot withstand declines tend to earn returns that fail to beat inflation or build meaningful wealth over the long term.

Playing it safe may protect you from short-term pain, but it can also often mean settling for mediocrity and missing out on the market’s biggest recoveries.

Bottom line

Munger’s 50% decline rule isn’t just market wisdom; It’s an internal check that separates emotional investors from disciplined wealth builders. Historically, even the best companies have faced massive declines, and those who have held on have seen even greater gains.

Investors who prepare for market turmoil and build emotional resilience can better handle inevitable downturns and benefit from better long-term growth prospects.