OptimalF

The OptimalF function calculates the optimal quantity of contracts to bet on using to R. Vince’s method. This function can be used in Quantity expressions for entry and exit definition.

Mathematics:

Where:

b = win/lose ratio per contract

p = probability of win per contract

 

Note: The account equity here isn’t constant and depends on previous trades results.

OptimalF Parameters

Parameter

Description

startAE

The Start Account Equity, or initial amount of money (in symbol currency). For example, for U.S.-traded instruments, this would be dollars).

tradesReq

The number of trades required to assure that the results obtained are good. TradesReq always uses the true entry count, not the number of contracts traded, since a Trade System could be set to be by contract or share. It is recommended that this value be set at 30 or more.

defF

The value to return while the trade count is less than TradesReq.

Which Trades

Specifies the type of trades which cause the count to begin:

All Trades =  total of the corresponding values of all trade system’s trades

Long Trades =  total of the corresponding values for trades that are set to Use as Long

Short Trades =  total of the corresponding values for trades that are set to Use as Short

This Trade Only = this specific trade only

Specific trade name = a specific trade, identified by name

Closed Trades Only

If selected, the calculations use only closed trades.