INVESTOR LETTER #134
When to Sell a Stock
Buying a great business is difficult, but knowing when to sell is often even harder. Many investors sell too early after making a small profit or hold on for too long after the business has deteriorated. The best selling decisions are usually based on changes in the business, valuation, or your original investment thesis—not on emotions or daily price movements.
INVESTOR NOTE
A business owner thinks in decades. A speculator thinks in minutes.
Buying Gets the Attention, Selling Creates the Return
Imagine planting a fruit tree. You wouldn't cut it down just because it started producing fruit. But you also wouldn't keep a tree that had stopped growing and become diseased. Investing requires the same balance between patience and good judgment.
The Hardest Investing Decision
Buying is exciting because it feels like the beginning of something new. Selling is much harder because it forces you to decide whether your original investment idea is still valid.
Price Alone Isn't a Reason
Many beginners sell simply because a stock has doubled or tripled. A rising stock price doesn't automatically make a business a bad investment. If the company continues growing and remains reasonably valued, selling purely because of a higher price may be a mistake.
When the Business Changes
The strongest reason to sell is when the business itself changes for the worse. If the company's competitive advantage weakens, management loses credibility, financial strength deteriorates, or the long-term outlook declines, your investment thesis may no longer hold.
When Your Original Thesis Breaks
Every investment should begin with a written thesis. If the reasons you originally bought the business are no longer true, it's time to honestly reconsider whether you should continue owning it.
When Valuation Becomes Extreme
Even outstanding businesses can become overpriced. If the market values the company far beyond what its future earnings can reasonably justify, reducing or selling your position may be worth considering.
When You Find a Better Opportunity
Capital is limited. Sometimes selling isn't about a company becoming worse—it's about finding another business that offers a much better combination of quality, growth, and valuation.
Don't Sell Because the Market Is Scary
Market corrections happen regularly. If nothing has changed about the business itself, a falling stock price alone isn't a good reason to sell. Often, it simply means the market has become more pessimistic.
Avoid Emotional Decisions
Fear, greed, panic, and excitement are terrible reasons to sell. Before making a decision, ask yourself whether you're reacting to the business or merely reacting to the stock price.
Review Before You React
Whenever you think about selling, go back to your investment thesis. Compare today's business with the one you originally bought. If your reasons for owning it remain intact, patience may be the better decision.
Sell With Logic, Not Emotion
Great investors don't sell because a stock has moved. They sell because the facts have changed. The best question to ask isn't 'Should I sell?' but 'If I didn't own this stock today, would I still buy it at this price?' If the answer is no, it's worth understanding exactly why.
INVESTOR PRINCIPLE