"Nothing gives you clues better than the stock market," the "Mad Money" host said. "Remember that peak auto thesis that autos were now headed [down]? Well, that's being disrupted by all those destroyed cars in the Houston area that are insured."
Nearly two weeks after flooding from Hurricane Harvey wreaked havoc on the Eastern coast of Texas, Cramer started seeing some of the most embattled auto stocks breaking out.
"Look at the stock of General Motors. It's finally breaking out. Do you know how many years that thing has been toiling in the House of Pain? That's those insurance checks. They're coming in. Look at the stock of auto parts maker Magna International," he said. "Morgan Stanley had the misfortune of downgrading this one right before the storm. Now it's hitting 52-week highs as the slowdown thesis for the auto industry is kaput and the parts industry is soaring."
But auto isn't the only sector turning around. Cramer also noticed health care stocks starting to come back to the fore and shared his cardinal rule for spotting market rotations.