Hi Clive,
PC/share is PC divided by number of shares. It kind of tells you where the midpoint is of your AIM machine.
When you have a sell, you have less shares and PC is the same. So PC /share is going up following the price.
When you have a buy, you have more shares and PC is up with a factor 0.5, so PC/share is down following the price.
So PC/share is a midpoint and you can add or substract the deviation for buys and sells (sometimes called the Lichello bands here).
You can chart the Lichello bands as well on a excel chart. It graphically shows you where the buying and selling starts.
Lichello in his book compared PC to the inertial guidance system in a nuclear submarine. For a portolio PC and portfolio value go together. For one stock, the price per share goes together with PC/share.
We had a discussion about this many years ago. I forgot it was there, but somehow i keep it in my charts.
Hope this explains it a bit more
Kind regards,K
