"I have been hearing lamentations that perhaps this stock market is not that strong because important stocks are being left behind," said Cramer.
That is, over the past 3 months, despite the 10% advance in the S&P and Dow Jones Industrial Average, bellwether stocks such as Freeport, US Steel and Alcoa have, at best, barely budged and in some cases tanked.
In fact entire sectors are getting left behind.
"The steels aren't rallying. Copper's been hideous. The miners are bad news. Aluminum's horrendous," said Cramer.
But the troubles don't stop with metals. "Also, the oils aren't keeping pace And the fertilizers can't get out of their own way," Cramer explained.
Can the rally possibly sustain without metals as well as these other important players?