Delta Air Lines, Walmart, Cal-Maine fall premarket; Peabody Energy rises

Investing.com -- U.S. stock futures slumped in volatile trading Wednesday amid uncertainty over the Trump administration’s tariffs policy, and ahead of the minutes from the last Federal Reserve meeting.

Here are some of the biggest premarket U.S. stock movers today:

• Delta Air Lines (NYSE:DAL) stock fell 0.6% after the carrier reported a quarterly profit at the top end of its recently adjusted guidance, but also forecast a lower-than-expected profit in the current quarter, saying travel demand has "largely stalled" due to economic uncertainty caused by President Trump’s sweeping tariffs.

• Walmart (NYSE:WMT) stock fell 1.7% after the retail giant pulled its outlook for operating income in the first quarter, citing uncertainty about the potential impact of sweeping tariffs on its key supply countries.

• Tesla (NASDAQ:TSLA) stock fell 0.8%, overturning earlier gains after Benchmark adding the EV manufacturer to its “best ideas” list.

• Apple (NASDAQ:AAPL) stock fell 2% after earlier gains as Jefferies upgraded its stance on the iPhone maker to “hold” from “underperform”, citing its recent pullback, even as it lowered its estimates and the price target.

• Alibaba (NYSE:BABA) rose 0.6% following a Reuters’ report that China’s top leaders are planning to meet to discuss measures aimed at boosting the economy and stabilizing capital markets.

• General Motors (NYSE:GM) stock fell 1.8% after CNBC reported that the auto giant is ending production this year of a gasoline-powered Cadillac crossover at a plant in Tennessee, while extending production of a smaller crossover called XT5 at the facility.

• Cal-Maine Foods (NASDAQ:CALM) stock dropped 5.1% after the country’s largest U.S. egg producer acknowledged it is being investigated by the antitrust division of the U.S. Department of Justice.

• Peabody Energy (NYSE:BTU) stock soared 11% after the coal mining company said it is reevaluating its potential $3.78 billion acquisition of Anglo American’s steelmaking coal operations following a fire incident at an Australian mine, one of the assets involved in the deal.