The prices of the S&P are compared with (red line) what the fundamental value seems to be: 14 times trailing earnings corrected for the cycle (with ISM/50). This shows the S&P went up about 200 points too much probably because of QE.
It could have been that we have seen the highest point at May 22 when the taper discussion of QE started in earnest.
The phases of the cycle
L=defeated=A
Cautious, not brave enough to buy= AB
Hopeful, should I buy?= BC
Encouraged, start buying=CD
Positive, forgot to buy the dip=DE