PitBull Low? Sometimes It Works, Sometimes it doesn't.

A lot talk about the "pitbull low". The theory is the S&P tends to make a low on the Thursday or Friday the week before the expiration. The rule is to look to buy weakness on that Thursday or Friday, looking for a low to hold into Monday or even into the expiration itself. Generally, the trade is to buy on Friday and hold into Monday. I have found it works 50/50.