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[amibroker] Question on Position Size Shrinking



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In the AA Backtester Settings there is a option to "Allow position size
shrinking". This option makes a huge difference in my results. I need to
understand what AB is doing when it is checked so I can replicate it in my
real trading. Below is the help description:

"If you mark this box AmiBroker will shrink down positions if available
equity is less than requested position size (via PositionSize variable). If
this box is unmarked positions will not be entered in such case."

This help statement is not really clear to me. Does AB determine "requested
position size" independent of available equity? I am not using any
"PositionSize" variables in my formula. Is there another "setting" that
controls "PositionSize"?

Could someone explain how I relate this to trading my signals?

Thanks, Scott



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