Origin
Callum sat his own book through the London cash session for twelve years — first on a junior seat, later for his own account. The profitable weeks were not the ones with the cleverest levels. They were the weeks he finished the note after 16:35, even when the note was ugly. The losing weeks were often the ones he redrew on Sunday until the story matched the P&L.
Storage Mapcore started when two traders from that period asked him to sit with their journals rather than talk markets. The name is literal in a small way: the journal stores the map of the session — bias, invalidation, the reason for the exit — so it is still there on Tuesday morning. It is not a warehouse and it is not a piece of software.
How the work is done
Sittings are one-to-one. Workshops are six seats. Written audits go out within five working days. There is no team of coaches and no house charting method you must adopt. Technical analysis already lives in your mark-up; the training is to stop the mark-up from lying after the close.
Callum will not join a live trade. He will not hold a view on next week’s index. He will ask you to read a sentence aloud and stay with the silence that follows.
Values that actually change the hour
- Finish on time. A review that overruns becomes another avoidance.
- Do not rewrite history. Timestamps stay visible, including stop edits.
- The trader owns the next session. The constraint is yours to keep or break.
- Harbourneford is the postal address; Great Britain is the working area. Travel is by arrangement, not a tour.