But for the [utilities] to rally this long, sorry, it is flashing red for the economy, telling us we're headed into the shoals of a slowdown."
The average is made up of 15 major utilities stocks and has been climbing since April 16, finishing Wednesday up 0.54%.
These stocks do well in a slowdown because they are not discretionary—consumers must pay their utilities bills, he said.
Cramer reaffirmed his stance that signs of a slowing economy have been cropping up over the last several weeks, and this rise in utilities only furthers that theory.
"At the end of the day, the [utilities], they never lie," Cramer said.
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