Wall Street’s bull run showed signs of fatigue Tuesday as major indices retreated from records on drops by Amazon, Nvidia and other tech giants.

The pullback followed comments from Federal Reserve Chair Jerome Powell warning that cutting interest rates “too aggressively” could stoke inflation, while the central bank boss also emphasized the need to try to prevent the labor market from softening “unnecessarily.”

All three major US indices have finished at records the last three days.

“Today’s pullback after fresh record highs could reflect market participants giving credence to valuation concerns amid a historic run, particularly in the mega-cap space, though investors have repeatedly shown a willingness to buy dips throughout this rally,” said Briefing.com.

The tech-rich Nasdaq led US

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