A steep slide in big technology companies pulled the major U.S. stock indexes mostly lower Wednesday, offsetting strength in banks and health care and erasing some of the gains the market made a day earlier.

The tech-heavy Nasdaq composite, which is the best-performing index this year, had its biggest single-day drop since August as investors cashed in some of their winnings and bid up shares in health care companies and retailers, among others.

Bond yields rose following a strong report on third-quarter economic growth in the U.S. That helped banks because they can charge higher interest rates on loans.

The Dow Jones industrial average closed modestly higher, notching a record high for the second straight day, while the Standard & Poor’s 500 index dipped less than 1 point.

“The market is flat, but inside the market, lots of change,” said Bob Doll, chief equity strategist at Nuveen Asset Management. “People are rotating away from what’s worked so well and buying some of the laggards.”

The S&P 500 index fell 0.97 points, or 0.04 percent, to 2,626.07. The Dow gained 103.97 points, or 0.4 percent, to 23,940.68. The Nasdaq lost 87.97 points, or 1.3 percent, to 6,824.39. The Russell 2000 index of smaller-company stocks picked up 5.86 points, or 0.4 percent, to 1,542.30. Rising stocks slightly outpaced declining ones on the New York Stock Exchange.

Signs of a tech sell-off were visible early on Wednesday, as the Nasdaq opened lower.

Amazon, Facebook, Google parent Alphabet and other big technology companies gave up some of their recent gains as the sector posted its biggest loss in more than five months. Even so, the sector remains the biggest riser this year, with a gain of 35.7 percent.

“If you look at any kind of chart you can see how extended tech was,” Doll said. “People are saying, ‘I’ve made so much money, let me take a little money off the table.’”

Amazon dropped $32.33, or 2.7 percent, to $1,161.27. Facebook fell $7.29, or 4 percent, to $175.13. Alphabet slid $25.91, or 2.4 percent, to $1,037.38.