When to Sell (and Why Almost Never)
Three legitimate reasons to sell — and a deliberately contrarian argument that a rising price is not one of them.
Fisher's view on selling is famously strict, and deliberately at odds with a lot of conventional trading instinct: if a company still qualifies under the fifteen points to the same degree it did when you bought it, there is, in his own framing, almost never a good reason to sell it — including the reason most investors reach for most often, that the price has simply gone up a great deal.
He gives exactly three legitimate reasons to sell: the original purchase judgment was a mistake, and the facts have proven this since; the company no longer qualifies to the same degree on the fifteen points; or a clearly, substantially better opportunity exists that outweighs even a great existing holding — which he considers genuinely rare in practice.
What's conspicuously absent from that list: selling because the stock's price or P/E "looks high" by conventional standards. A truly outstanding company, correctly identified through the fifteen points, can go on compounding earnings for so long that a price that looked expensive at purchase can look cheap in hindsight years later — and selling out of a great company purely because of a valuation multiple risks giving up exactly the multi-year compounding the whole philosophy is built to capture.
| Reason | What it actually means |
|---|---|
| 1. The original judgment was a mistake | Facts since purchase have shown the fifteen-point analysis was wrong at the time, not just unlucky |
| 2. The company no longer qualifies | A real, visible deterioration in management, competitive position, or growth potential |
| 3. A clearly better opportunity exists | Rare in practice — the bar is a substantially better prospect, not just another reasonable one |
A company correctly identified as an exceptional fifteen-point business, bought at what looked like a full price, can go on to multiply its earnings many times over across the following decade.
Looked at only through the lens of the original purchase-day P/E, that outcome would have led an investor to sell far too early and miss the vast majority of the eventual gain — Fisher's own experience with several long-held positions is the basis for this specific, deliberately contrarian rule.
Holding through the discomfort of a rising, seemingly expensive-looking price, and through ordinary market volatility, is emotionally much harder than it sounds — which is exactly why Fisher ties the sell decision back to the same fifteen-point framework used to buy, rather than to the price chart. If nothing about the business itself has changed, the price by itself isn't new information about the business.
- Fisher lists exactly three legitimate reasons to sell — a mistaken original judgment, genuine deterioration on the fifteen points, or a clearly superior alternative opportunity.
- A high price or P/E is explicitly not one of them — Fisher considered this one of the most common and costly mistakes investors make with genuinely great companies.
- The sell decision is tied to the same fifteen-point framework used to buy, not to the stock's price chart.
- This is a deliberately contrarian, demanding discipline — holding through discomfort is the hard part, not identifying the reasons to sell.