Portfolio Down 30% — What Should I Do?

Q: What should I do when facing "My Portfolio Is Down 30 Percent What Should I Do"?

Staring at massive portfolio losses — looking for immediate guidance A 30% portfolio decline is gut-wrenching, and the emotional pressure to "do something" is overwhelming. But the most important thing to understand right now is this: a 30% decline is not unusual -- it is the historical norm. Since 1950, the S&P 500 has experienced a decline of 30% or more roughly once every decade, and it has recovered from every single one. Warren Buffett's approach to drawdowns is instructive. During the 2008 financial crisis, Berkshire Hathaway's stock dropped over 50%. Buff

What the Masters Would Say

A 30% portfolio decline is gut-wrenching, and the emotional pressure to "do something" is overwhelming. But the most important thing to understand right now is this: a 30% decline is not unusual -- it is the historical norm. Since 1950, the S&P 500 has experienced a decline of 30% or more roughly once every decade, and it has recovered from every single one.

Warren Buffett's approach to drawdowns is instructive. During the 2008 financial crisis, Berkshire Hathaway's stock dropped over 50%. Buffett did not panic-sell. Instead, he invested $26 billion in companies like Goldman Sachs, General Electric, and Bank of America during the depths of the crisis. Those investments generated billions in profits. His logic was simple: great businesses do not stop being great because their stock prices decline.

Howard Marks teaches that the relationship between price and value is the central concept in investing. When your portfolio is down 30%, ask yourself: has the intrinsic value of the businesses you own also declined by 30%? In most cases, the answer is no. Stock prices overshoot on the downside just as they overshoot on the upside. This gap between price and value is where opportunity lives.

Benjamin Graham created the famous allegory of Mr. Market -- an emotional business partner who offers to buy or sell shares at different prices every day. Sometimes Mr. Market is euphoric and offers high prices; sometimes he is depressed and offers low prices. The intelligent investor takes advantage of Mr. Market's mood swings rather than being controlled by them.

Here is your immediate action plan:

Your Action Plan

1. Resist the urge to check your portfolio daily -- set a specific review date one week from now and commit to no changes before then.
2. For each position, write down: the original reason you bought it, whether that reason is still valid, and whether the business fundamentals have actually deteriorated.
3. Separate companies that are down because of temporary market fear from those that face genuine business problems.
4. If you have cash reserves, begin building a watch list of quality companies at attractive prices.
5. Calculate how much your portfolio would be worth if it simply returned to its previous high -- that potential return is your incentive for patience.

The Bottom Line

The investors who build generational wealth are those who stay calm during the moments when staying calm feels impossible.

Citation Traceability

Canonical URL: https://keeprule.com/en/scenarios/portfolio-down-30-percent-what-to-do
Language Served: en (requested: en)
Last Updated: 2026-02-12

Related principle sources:

Long Holding Period Contrarian Value Voting vs Weighing Machine

🤖