Sell in May and go-away?

May is approaching and everyone (and their brother-in-law) will be out with the "sell in May and go-away" thesis. FBN Financial's technical analyst is one of the first with a report today that notes there is validity to the argument after assessing 20-years of data. The May-October period has accounted for -4% of the return from the S&P 500 over the period. Combine this with the historical market uncertainty that usually falls through the summer during mid-term election years, one should keep their options open.

http://www.bnn.ca/Blogs/2014/04/25/SP-slashes-Russias-rating.aspx