Risk management basics for new traders
The entry story is optional. The size, the invalidation, and the rule for stopping are not.
Three numbers before a trade
How much capital is in the account you can actually lose. How much of that account this one idea is allowed to lose if you are wrong (a common teaching range is a small fraction of equity, not a third of the account). Where the idea is wrong, written down before you click, so the loss is a number and not a feeling.
If you cannot name those three, you do not have a trade. You have a hope.
Invalidation is not the same as “I feel done”
An invalidation is a condition: price through a level, a time stop, a news window you refuse to hold. Moving the stop because the story still sounds good is how small losses become account events. Professionals still lose. They cap the loss when the plan said they would.
A kill rule for the process
One trade can be wrong. A week of trades that all violate size rules is a process failure. Write a halt: for example, stop for the day after a set number of losses, or after a set drawdown from the day’s start. The number matters less than the fact that you will obey it when you are angry.
This site does not tell you to trade, and it does not give size recipes for a live book. The lesson is the habit: write the rule when you are calm.
Key takeaways
- Size and invalidation come before the entry narrative.
- A stop you move is not a stop.
- A written halt for the day protects the account from a mood.