Stocks fall again as a wild trading week continues

. — Technology and energy stocks led a broad sell-off Thursday on Wall Street that wiped out nearly all of the market’s gains from a strong rally the day before. The Standard & Poor’s 500 index ended down 1.8% after having been up 0.8% in the early going. The slide cut deeply into the 2% gain that the benchmark index posted Wednesday. The latest gyrations follow a wild stretch in which the S&P 500 careened from its worst three-day slump since June to its best day in nearly three months. Tech stocks accounted for the biggest share of the broad sell-off. The sector has been at the center of the market’s swings, hurt by criticism that its recession-defying surge in recent...