Ocroft, just for Fun.
I have used your GE prices as provided. As I said with having knowledge of the prices I could have bought at price = 8.51 with a 1000 Reserve.
At that point the Buy Advice for Vortex at Zero Aggression was $ 7701.55 but I did not execute it. I executed it at 10,11 which is an 18.8% Recovery. I Bought 761.755 shares for the amount of $7701.55 10
For that date the Portfolio stood at:
Initial Buy @ 37,10 = 10000....270.1972 Shares Jan 2, 2012
End Condition 01-02-2013
Value @ price = 10.11 = 10433.24. . . .1031,9727 Shares
Reserve = 2298.45
Profit = -7268,30
PV = 12731,70
PC= 10433.24
Remarks
The accumulated buy @ 7701,55 at Zero Aggression could well have been have been 10000 if I had used a little higher aggression for the buying, so the result would be thee same as you would have done(as discussed). However, with 2298,45 Reserve now it would be possible to continue buying if the price dropped again significantly and IF I had still faith in that stock I just might do that, like you probably might. . .A good stock is good to buy at low prices!
On the other hand when the price recovery continues I would not sell all at 20% profit but I would sell a portion of it.
I suppose what I have done here is the essence of your method. . reight?