Stocks were up at the markets’ close Thursday, led by gains in technology and health care companies.

ON WALL STREET: At the close, the Dow Jones industrial average was up 177.7 points, about 1 percent, at 18,212.5.

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The Standard & Poor’s 500 index had gained 21.5 points, about 1 percent, to 2,147.3.

The Nasdaq composite added 75.9 points, about 1.5 percent, to 5,249.7.

OIL PRICES: As markets closed, the price of benchmark U.S. crude was up 26 cents at $43.84 per barrel in electronic trading the New York Mercantile Exchange as a drawdown in U.S. stockpiles was countered by news that oil fields in Nigeria and Libya would restart production. In London, the price of Brent crude, used to price international oils, added 52 cents to $46.42 a barrel.

MAKING MOVES: Apple rose again Thursday as investors became more optimistic about early sales of its newest iPhone models. The stock is up 12 percent this week. Among health-care stocks, Merck gained 2 percent. Goodyear rose 5 percent after raising its dividend.