Hi NiteLord, On Vortex. I am running about 40 posts behind, so others may have responded to your qustion already. I take then as they come! In the Vortex Y=PC after a trade always automatically by the linking of the Buy Factor and the Buy Agression: BF=1/(1-BA) So, if BA=0,5 the BF=2 Buy = (5000-3000)*BF=2000*2=4000 PC2=PC1 + 0,5(4000)=5000 + 2000 = 7000 New Stock Value =3000+4000=7000 Ergo Conrad