Define a Roof. Hit It. Stop.
2 min read · also published as a field note
A floor tells you when to stop losing. A roof tells you when to stop winning — and for most traders that is the harder rule to follow.
What a roof is
A session's roof is the point at which the day's work is done: the target reached, the platform closed, the rest of the session left alone. It is set before the session, like the floor, and it is a number the process can reasonably reach on an ordinary day — not a hope for an extraordinary one.
Why stopping is the skill
The day after a roof is hit is the day most accounts give it back. Not because the market changed, but because the trader kept going — larger, looser, "while it's working." A roof converts a good session into a *banked* session, and a banked session is the only kind that compounds. The cycle is made of banked days, not of days that were up at some point.
The roof and the consistency rule
If you have come from a prop farm you have already met a version of this: the consistency rule that caps how much of a pass one day may contribute. A DCT roof is the same shape by choice rather than by a firm's terms — moderate days, repeated, are what a bounded cycle is built from. Trading to pass, not to earn is the prop-farm version.
What a roof is not
It is not a cap on the account's growth; the cycle's goal is the cap. It is a cap on the *session's exposure* once the session has done its job. Some of our own measurement found that a hard daily cap can cost the cycle the days that finish it — which is a real trade-off, and the reason the roof is a session discipline rather than a rule about the whole cycle. Where the line sits is a design decision; that the line exists is not.
The habit
Roof set. Roof reached. Platform closed. Walk. The process is judged by whether you did those four things, not by what the market did after you left.
Kingdom Portfolios is an independent education company. Nothing here is investment advice, a signal, an offer, or a description of a service. No performance figures are given anywhere in this course, and none should be inferred. Every reference to "our own measurement" or "our lab" is simulated research on historical data — hypothetical, not actual trading, with the limitations hypothetical results carry — and describes what we learned, never a result anyone achieved. The mechanics of our own trading are not published; only the principles are. Trading forex and futures carries substantial risk of loss, including loss of the whole account. Education only — practise on a demonstration account first.
Common Questions
What if the market keeps moving after I hit my roof?
It will, often. The roof is judged by whether you closed the platform, not by what happened after. The sessions given back after a roof are the sessions that end cycles; the ones left on the table are the price of a cycle made of banked days.
Should the roof be the same every day?
It should be a number the process can reach on an ordinary day, decided before the session. Whether it is fixed or scales with the account is a design choice; that it is set in advance is the discipline.