Nvidia, Walgreens, Palo Alto Networks and Teladoc fall premarket; By

-- U.S. fell Wednesday as investors digested a raft of corporate earnings ahead of the release of the minutes of the latest Federal Reserve meeting.

Here are ptfx latest news 1 day agosome of the biggest premarket U.S. stock movers today:

• Nvidia(NASDAQ:) stock fell 1.8% ahead of the release of quarterly earnings from the artificial intelligence chipmaking giant, in a sign that traders may be balking at the firm's expensive valuation.

• Walgreens Boots Alliance(NASDAQ:) stock fell 3% after the U.S. pharmacy chain operator lost its spot on the to Amazon(NASDAQ:), up 1%, after nearly three years on the blue-chip stock index.

• Palo Alto Networks(NASDAQ:) stock fell 23% after the cybersecurity firm reported current-quarter guidance on Tuesday that missed estimates, with clients carefully watching their expenditure.

• Teladoc(NYSE:) stock fell 21% after the healthcare company offered up disappointing first-quarter guidance, warning that the market for virtual-healthcare services is getting saturated.

• SolarEdge Technologies(NASDAQ:) stock fell 17% after the company provided weak guidance for the first quarter, as the residential solar market continues to face headwinds from high interest rates and depressed demand.

• (NASDAQ:) stock fell 0.7% after the semiconductor maker warned of a "difficult macroeconomic environment" even after it slightly beat expectations with its first-quarter results.

• HF Sinclair(NYSE:) stock fell 4% after the oil refiner’s gross refining margin fell in the fourth quarter, even though it beat profit expectations, helped by healthy refining margins and resilient fuel demand.

• HSBC(NYSE:) ADRs fell 7.5% after the banking giant reported a $3 billion charge on its stake in a Chinese bank, even as it announced a record annual profit.

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