CNBC's Jim Cramer warned investors not to make major market moves based solely on the Fed's interest rate decisions, suggesting major market themes have not really changed in the wake of the central bank's Wednesday meeting.

"While we could've gotten more dovish languish from Powell, of course...No big themes were upended. No longer-term gains were put on hold. In the end, everybody with half a brain knew we'd get a quarter point cut," he said, adding that the uneven market action following the Fed's meeting might have even created opportunities for buyers.

"Why is that? Because we do not trade cuts in rates," Cramer continued. "We don't buy or sell stocks based on statements by Jay Powell," Cramer continued.

Wednesday's session was mixed after the Fed lowered its benchmark over

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