A slew of Wall Street analysts covering Nvidia Corp. are boosting their expectations for the chipmaker’s stock ahead of its quarterly earnings release due Aug. 27.

U.S. stock indexes ended mixed after Nvidia, Palantir and other superstar stocks pared most of their steep losses from the morning.

Nvidia, Palantir and other superstar stocks that surged in the mania surrounding artificial-intelligence technology are dragging Wall Street lower again on Wednesday. The S&P 500 fell 0.9% and was on track for a fourth straight loss after setting an all-time high last week.

Asian shares are mixed after Wall Street fell to a fifth straight loss, hurt by losses for Walmart and worries over coming cuts to interest rates

Walmart was one of the market’s heaviest weights and dropped 4.5% after reporting a profit for the spring that came up short of analysts’ expectations, while Nvidia and other Big Tech stocks held a bit steadier following two days of sharp swings.

European shares have opened lower after a mixed trading session in Asia. U.S. futures slipped while oil prices advanced. Traders are looking ahead for cues about U.S. monetary policy from

Shares of Dow component Walmart Inc. dropped 2.9% in premarket trading Thursday, after the discount retail behemoth [missed fiscal second-quarter profit expectations](

Adjusted earnings per share were softer than Wall Street was projecting, coming in at 68 cents a share, compared with estimates for 73 cents. The adjusted figure excludes one-time gains on equity and other investments,