These stocks look just like the New York Mets
To be specific, Kensho found only a dozen stocks in the S&P 500 that were down from 2009 through 2014. Among them, only the five listed above have been positive in 2015 through Wednesday.



Obviously, Citigroup is the most well known of the group and has been through a lot of ups and downs since the financial crisis. Even 2015 is very much one for the bubble. As of Wednesday's close, Citigroup was up this year. But after Thursday's losses, Citi is now down for the year. Maybe they can look to their stadium for inspiration: The Mets were barely positive at the All-Star break, at 47-42, before breaking out with a late summer and fall surge.

Vulcan has been the best performer of the group, while Hudson City and Newmont have been just barely hanging into positive territory for the year.

The question for all five of these stocks — and the Mets — is: Can these gains continue into next year? Is 2015 the start of a trend, or just an single aberration in a much broader theme?

Disclosure: NBCUniversal, parent of CNBC, is a minority investor in Kensho.