Durable Sell Triggers
The deliberately short list of genuine reasons to sell a position, and the much longer list of things that are not sell triggers.
The list of genuine sell triggers is short, and that is deliberate. Most reasons investors give for selling do not survive scrutiny. The triggers that do are structural, durable, and identifiable only after sustained observation.
The three genuine sell triggers
1. Sustained management dishonesty
Not one quarter of over-optimistic guidance — that is nearly universal. The trigger is a repeated, deliberate gap between what management says and what actually happens. A pattern where projections consistently overstate reality, where problems are hidden until they become unavoidable, where the narrative shifts to explain away results rather than address them honestly.
Trust in a management team takes many earnings cycles to build. It takes the same path to lose. A single miss is not dishonesty. A pattern of misrepresentation is. The distinction requires patience and multiple data points.
2. Durable structural impairment
Evidence that the business model is losing the properties that made it worth owning. This means the competitive moat is narrowing, the unit economics are deteriorating, or the addressable market is shrinking — not because of a cycle, but because the landscape has permanently shifted.
Temporary headwinds from inventory corrections, interest rate changes, or competitor product launches are explicitly excluded. These are cyclical, not structural.
3. Loss of capital allocation discipline
Management making large, poorly-reasoned bets that destroy the financial properties of the business. Overpriced acquisitions that impair the balance sheet, pivots into unrelated businesses, or aggressive financial engineering that trades long-term health for short-term metrics.
What is NOT a sell trigger
The following are not sell triggers, despite how urgent they feel in the moment:
- A bad quarter — Businesses have bad quarters. It is normal.
- A stock price decline — Price is not the same as value.
- A negative news cycle — Media incentives favour alarm over accuracy.
- The emergence of a new competitor — Competition is constant; dominance is tested regularly.
Acting on these is how long-term investors become short-term traders, one "exception" at a time.
The discipline of a short trigger list is that it forces genuine analysis before action. If the reason to sell does not fit one of the three categories above, the default is to hold.
Related
- Thesis-Based Selling — The framework for evaluating whether a business has fundamentally changed
- Sunk Cost Fallacy — The opposite risk: holding when selling is warranted because of attachment to the position
- Core vs Exploratory Positions — How position size reflects conviction and affects selling decisions