Size Rules

rules which validate the size of the order capital at risk ensures the order size is set such that the total risk taken on a single position does not exceed a given percentage of your funds funds are defined as the total value of your brokerage account prior to and excluding any open position this rule will default the size of the order to the given percentage if no size has been specified important note important note the size provided is effectively the risk taken on a position as a percentage of the account value this may lead to sizes that are larger than the funds available on the account this is valid if you are using leveraged instruments (e g cfds) but not if you are buying the stock outright if this is an issue, consider using the size capital invested rule instead parameters percentage at risk specify the maximum percentage of your funds which should be at risk on any given order a value of 2 corresponds to 2% the value must be >= 0 1 and <= 20 capital invested ensures the order size is set such that the value invested does not exceed a given percentage of the funds funds are defined as the total value of your brokerage account prior to and excluding any open position this rule will default the size of the order to the given percentage if no size has been specified important note important note this rule should be used when the instrument is bought outright see the size capital at risk rule if you are trading leveraged instruments and / or only care about the value at risk parameters percentage at risk specify the maximum percentage of your funds which should be at risk on any given order a value of 2 corresponds to 2% the value must be >= 0 1 and <= 20