Extraordinary Popular Delusions

Toward the end of August, I was getting emails about Hindenburg omens every day. The S&P 500 has leapt almost 7% since then, and bearish sentiment has dried up.

Today on the CBOE, two equity calls are trading for every equity put.
Zero Hedge reports that corporate insiders sold $651 worth of stock for every $1 purchased last week.
Other sentiment indicators are showing that the bulls are overextended.