NEW YORK — Wall Street limped to the finish line of its third losing week in a row. The S&P 500 barely budged Friday, ending the day down by less than 0.1%. It lost more than 2% for the week, like other U.S. indexes.

The Dow edged up 25 points, and the Nasdaq composite slipped 0.2%. August has been rough for the stock market, which has given back more than a quarter of the S&P 500’s torrid gains for the year’s first seven months. That’s in part because a swift rise in yields has forced investors to reconsider whether stocks got too expensive.

CINCINNATI — Thousands of migrants from the West African country of Mauritania have arrived in the U.S. in recent months, following a new route taking them to Nicaragua and up through the southern border.

Previously, those fleeing Mauritania entered through Brazil and took a treacherous jungle passage — or risked their lives on boats to Europe. The Nicaragua route doesn’t require a visa. That fact is circulating on TikTok, where travel agencies and guides advertise trip packages. Many Mauritanians say that’s how they learned of the route.

The influx of Mauritanians has surprised officials in the U.S. It came without a triggering event — such as a natural disaster, coup or sudden economic collapse — suggesting the growing power of social media to reshape migration patterns: From March to June, more than 8,500 Mauritanians arrived in the country by crossing the border illegally from Mexico, up from just 1,000 in the four months prior, according to U.S. Customs and Border Protection data.