Three-strike rule for the London open: when I stop taking setups
Posted: Sat Sep 12, 2026 8:32 pm
Process note for the first 90 minutes of London — not a signal thread.
I run a simple three-strike rule. A strike is not a losing trade. A strike is a process breach: chasing after a miss, taking a setup outside my pre-marked levels, or overriding a news blackout because “it looks clean.”
How I count it
1. Strike one — note it, keep size normal, tighten the checklist for the next ticket.
2. Strike two — size down to half for the rest of the open window.
3. Strike three — flat for the remainder of that London open. No “one more.”
Why it works for me: early London is where my edge is supposed to live. If I’m already bending rules by 08:30, I’m not trading a playbook — I’m negotiating with myself. The rule removes the negotiation.
What I do not count as a strike
A clean setup that stops out. Bad fills on an otherwise valid ticket. Standing aside when spread spikes. Those are costs of doing business, not discipline failures.
I write the three strikes on a sticky before the open so I’m not inventing the rule after the second mistake. If you’ve got a similar hard stop for the session, how do you define a strike versus a normal loss?
I run a simple three-strike rule. A strike is not a losing trade. A strike is a process breach: chasing after a miss, taking a setup outside my pre-marked levels, or overriding a news blackout because “it looks clean.”
How I count it
1. Strike one — note it, keep size normal, tighten the checklist for the next ticket.
2. Strike two — size down to half for the rest of the open window.
3. Strike three — flat for the remainder of that London open. No “one more.”
Why it works for me: early London is where my edge is supposed to live. If I’m already bending rules by 08:30, I’m not trading a playbook — I’m negotiating with myself. The rule removes the negotiation.
What I do not count as a strike
A clean setup that stops out. Bad fills on an otherwise valid ticket. Standing aside when spread spikes. Those are costs of doing business, not discipline failures.
I write the three strikes on a sticky before the open so I’m not inventing the rule after the second mistake. If you’ve got a similar hard stop for the session, how do you define a strike versus a normal loss?