Stocks on Wall Street shook off a weak start and closed slightly higher Friday, snapping a four-week losing streak.

The S&P 500 edged up 0.1%. The index finished with a 0.5% gain for the week. It’s still down 4.8% so far this month.

The Dow Jones industrial average eked out a 0.1% gain, while the Nasdaq composite rose 0.5%.

Technology stocks, which had been the heaviest weights on the market in the early going, bounced back to offset a big share of the declines elsewhere in the S&P 500.

Apple rose about 2% and Microsoft added 1.1%. Another Big Tech stock, Nvidia, fell 0.7%, while Micron Technology slid 8% for the biggest decline among S&P 500 stocks.

Businesses have been warning investors about tariffs, inflation and growing uncertainty about the impact to costs.

Nike slumped 5.5% after it forecast a steep decline in revenue in the current quarter, blaming geopolitical dynamics, new tariffs by the Trump administration and a less confident consumer.

FedEx tumbled 6.4% after the package delivery company said it expects revenue to be flat to slightly down year-over-year and lowered its per-share profit guidance.

Homebuilder Lennar fell 4% after giving investors a weaker-than-expected forecast for new orders and average sales prices for the current quarter

A recent batch of economic reports on home sales, industrial production and unemployment reinforced the view that the economy is holding strong. But other reports on consumer sentiment and retail sales have revealed rising caution from consumers.

In the bond market, Treasury yields mostly held steady. The yield on the 10-year Treasury rose to 4.25% from 4.23% late Thursday.

Airlines were under pressure. A fire knocked out power at London’s Heathrow Airport, forcing it to shut down and disrupting global travel for hundreds of thousands of passengers. Ireland’s Ryanair Holdings fell 1.5%.

Shares in several U.S.-based airlines were mixed. American Airlines rose 1.2%, United Airlines added 1.1% and Delta Air Lines fell 0.4%.

Troubled airplane maker Boeing surged 3.1% after Trump said Boeing will build the Air Force’s future fighter jet. The company has been facing scrutiny over safety issues for years.

Boeing’s rival in the defense sector, Lockheed Martin, slumped 5.8%.

All told, the S&P 500 rose 4.67 points to 5,667.56. The Dow gained 32.03 points to 41,985.35, and the Nasdaq rose 92.43 points to 17,784.05.

— Associated Press