A trading plan states which instruments, sessions and regimes are permitted; how setups are identified; which orders and invalidation rules apply; how position size is computed; and what ends the…
Understand the mechanism
A trading plan states which instruments, sessions and regimes are permitted; how setups are identified; which orders and invalidation rules apply; how position size is computed; and what ends the trading day. It also defines handling of news, outages, large gaps and prolonged drawdown. Vague instructions such as “trade strong momentum” are not testable until translated into observable criteria.
Before applying this topic in a live market, write down the information available before the decision. Distinguish a fact confirmed by a platform specification or official source from an interpretation drawn from a chart. If a key data point is missing, treat it as unknown rather than filling it with a convenient estimate.
Worked example or scenario
A rule such as “enter after a four-hour close above the prior week’s high, only if spread is below the configured cap” is more reproducible than “buy a breakout that looks good.”The numbers and scenarios in this example are educational illustrations. They are not live quotes, account-specific contract terms, backtested guarantees or a suggestion to place this trade. Consider how the outcome changes when costs, a different contract multiplier, or a faster market are introduced.
Common mistakes and limitations
Retrofitting rules to yesterday’s chart and treating the revised outcome as evidence of profitability.
Check whether any assumption depends on a fixed spread, a guaranteed fill, a historical relationship remaining stable, or the availability of a financial product in your country. In practice, execution rules and platform legal entities differ. A correct formula using an incorrect contract multiplier can still produce a dangerously wrong position size.
Four-point practical checklist
- 1
Step 1
Identify the exact instrument and contract terms before doing any arithmetic.
- 2
Step 2
State the risk and assumptions in account currency, not only in chart points.
- 3
Step 3
Check current primary-source information and write down what could invalidate the idea.
- 4
Step 4
Draft a one-page plan with measurable entries, exits, stop, sizing, cost limit, session and shutdown conditions.
Practice assignment
Draft a one-page plan with measurable entries, exits, stop, sizing, cost limit, session and shutdown conditions.
Complete the task in a journal, spreadsheet or demo account and keep a record of your assumptions. If you are unable to explain the possible loss in your own account currency, do not substitute a larger position for a missing calculation.
Reflect and self-check
Does understanding this lesson guarantee profit?
No. Understanding mechanisms helps evaluate decisions; it cannot predict market movements or remove trading losses.
Can I use this lesson with any broker?
The principles may transfer, but prices, product rules, contract multipliers, protections and country eligibility must be checked for each provider.