The stock market is heading into a catalyst-filled week as Fed Chair Jerome Powell gets ready to speak at Jackson Hole and big retailers report earnings.

Federal Reserve chair Jerome Powell is scheduled to speak at the central bank's annual Jackson Hole Symposium on Friday, an event that could be a major test of the stock market's post-"Liberation Day" rally.

When Nvidia, the chip producer, reports earnings next week, investors expect the S&P 500 to have a bigger reaction than when the Fed chair delivers a big speech on Friday.

Walmart earnings are in early focus before the highly anticipated start of the Federal Reserve's gathering at Jackson Hole.