Tech stocks have a problem. On Thursday, as the S&P 500 fell 1.54 percent to suffer its second-worst day of 2017, tech stocks led the way lower, with the S&P’s information technology sector dropping 1.98 percent. While tech remains one of the best-performing areas of the market, some say the …

Photo Joined by the Tanglewood Music Center Orchestra, the pianist Paul Lewis will play Beethoven’s Piano Concerto No. 3 on Sunday in Lenox, Mass.; see listing below. Credit Nathaniel Brooks for The New York Times Our guide to the city’s best classical music and opera. ‘DON GIOVANNI’ at the Rose …

Drew Angerer | Getty Images Gary Cohn, president of Goldman Sachs and President-elect Donald Trump’s choice for director of National Economic Council, arrives at Trump Tower, December 14, 2016, in New York City. Gary Cohn is facing the most difficult investment dilemma of his career. The former Goldman Sachs president …

Photo Jimmy Kimmel said, “If we’re going to start taking down every monument that pays tribute to racists, we should probably take down every building with the name Trump on it.” Credit ABC Welcome to Best of Late Night, a rundown that lets you sleep — and lets us get …

Josep Lago | AFP | Getty Images Armed policemen stand in a cordoned off area after a van ploughed into the crowd, injuring several persons on the Rambla in Barcelona on August 17, 2017. A manhunt is underway in Spain as police search for the driver of a van that …

The Guangzhou Transgender Center declined to screen the film, citing pressure from the local authorities. And although the film was made mostly at the students’ school, which is affiliated with Renmin University of China, with students playing most of the parts, school officials would not grant permission for public screenings …

Photo T. J. Miller is among the many comics to be featured in the weeklong Brooklyn Comedy Festival, returning on Monday for a fifth year. Credit Richard Perry/The New York Times Our guide to stand-up, improv and variety shows. BROOKLYN COMEDY FESTIVAL (Aug. 21-27). This annual festival returns for a …

Photo From left, Krysten Ritter, Finn Jones, Charlie Cox and Mike Colter in “Marvel’s The Defenders.” Credit Netflix Netflix brings some familiar superheroes together for a singular purpose in its latest Marvel series. And two news programs investigate white supremacists in the United States. What’s Streaming MARVEL’S THE DEFENDERS on …

Mike Windle | Getty Images Uber Ex-CEO Travis Kalanick speaks at a Vanity Fair summit at Yerba Buena Center for the Arts on October 19, 2016 in San Francisco, California. The ousted chief executive officer of Uber Technologies called a lawsuit filed against him by one of the company’s top …

Photo Fabergé eggs at the Metropolitan Museum of Art. A “Griffins, Goblets and Gold” tour of the museum introduces fans to objects that evoke the Harry Potter books; see listing below. Credit Janette Pellegrini Our guide to cultural events in New York City for families with children and teenagers. ‘CHITTY …