
Step 1
Run the 10-minute triage (before touching the order button)
Write a one-line answer for each: (a) What was the *expectation* going into earnings? (b) What changed in fundamentals vs guidance vs narrative? (c) W...
Keyword: panic selling after earnings
A decision playbook for earnings-day volatility: separate thesis breaks from noise, reduce risk by rules, and avoid emotional exits.
Earnings-day moves often feel like “new truth”, but price is a mix of information, positioning, and expectations reset. This page helps you decide what to do *without* improvising: first test whether the thesis actually broke, then apply a staged risk protocol (size caps, time delay, evidence checklist), and only then decide to hold, trim, or exit. The goal is not to predict the next candle—it is to protect decision quality under volatility and keep your process consistent across quarters.

30-second action
Pick the smallest next action now: test your bias pattern, run a scenario, or copy a prompt before making a portfolio move.

Step 1
Write a one-line answer for each: (a) What was the *expectation* going into earnings? (b) What changed in fundamentals vs guidance vs narrative? (c) W...

Step 2
List 2–4 thesis invariants (unit economics, moat signal, balance-sheet safety, reinvestment runway). Then ask: did earnings *falsify* any invariant, o...

Step 3
Volatility becomes dangerous when a single position is too large to think clearly. Before deciding “buy vs sell”, check size: if the position breaches...
Write a one-line answer for each: (a) What was the *expectation* going into earnings? (b) What changed in fundamentals vs guidance vs narrative? (c) What is the single biggest new risk item? If you cannot state these plainly, you are reacting to emotion and volatility, not evidence.
List 2–4 thesis invariants (unit economics, moat signal, balance-sheet safety, reinvestment runway). Then ask: did earnings *falsify* any invariant, or did it only change near-term optics? If an invariant broke, you plan a risk reduction. If not, you treat the move as a stress test of your holding rules.
Volatility becomes dangerous when a single position is too large to think clearly. Before deciding “buy vs sell”, check size: if the position breaches your maximum weight or drawdown risk budget, trim mechanically to get back inside policy. This is risk control, not a forecast.
Hold if: invariants intact and you can write one next-review date. Trim if: invariants intact but risk rose (uncertainty, leverage, dilution, guidance quality) and size is uncomfortable. Exit if: an invariant is falsified or the business model assumptions changed materially. Avoid adding on day one unless you have a written plan *before* the event.
Record the earnings takeaway in your journal: what surprised you, what you would watch next, and what would change your mind. If you changed the position, document the rule you followed. The goal is to convert one volatile event into a reusable decision protocol.

A waiting rule usually improves clarity because it reduces adrenaline-driven decisions and lets the market digest. The exception is when your policy says you must act immediately (for example, leverage risk, accounting integrity issues, or a thesis invariant being clearly falsified).
Focus on what changes the long-term distribution: guidance quality and repeatability, unit economics trend, pricing vs volume, margin durability, and balance-sheet risk. A single quarter miss matters less than a structural change in demand or profitability.
Thesis-breaking evidence is something that invalidates your core assumptions: the product loses pricing power, the moat signal erodes, leverage becomes unsafe, dilution becomes likely, or management behavior changes the capital-allocation story. If you cannot name the broken assumption, you do not have a thesis-break—you have volatility.
Use a hard delay plus a checklist gate. For example: no new trade for X hours, then you must complete (a) triage summary, (b) thesis-break test, (c) size-boundary check. If you cannot complete the writing, you cannot trade.
Only if it is a pre-committed rule that matches your strategy. Stops can prevent catastrophic losses, but they can also force exits during gap moves and high-volatility noise. Many long-horizon investors prefer thesis-based exits plus strict sizing so they can hold through volatility without breaking rules.
Before your next result season, define one hold rule, one reduce rule, and one add rule tied to evidence.