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NEW YORK – U.S. stocks stabilized Friday and ended with a small gain, but it wasn’t enough to prevent the market’s biggest weekly drop since April.

Investors became more cautious this week as corporate earnings for the April-June period began trickling in. Worrisome news about a Portuguese bank also revived fears of another European debt crisis. That weighed on stocks, which had closed out the previous week at record highs.

Investors are now mulling whether the stock’s market valuations are justified by the outlook for company earnings, or whether they have risen too far, too fast.

As investors try to make sense of the market, “we could be in a holding pattern,” said Kristina Hooper, U.S. investment strategist at Allianz Global Investors.

The Standard & Poor’s 500 rose 2.89 points, or 0.2 percent, to 1,967.57 Friday. The weekly decline of 0.9 percent was the biggest since April 11.

The Dow Jones industrial average climbed 28.74 points, or 0.2 percent, to 16,943.81. The Nasdaq composite rose 19.29 points, or 0.4 percent, to 4,415.49.

Friday, investors absorbed corporate news and earnings.

As U.S. companies start to report second-quarter results, investors expect more growth in profits. Earnings for S&P 500 companies are forecast to climb by 6.4 percent. That rise is bigger than the 3.4 percent increase in the first quarter and 4.9 percent in the same period a year earlier, according to data from S&P Capital IQ.

While earnings are rising, stock valuations also have climbed.

The price-earnings ratio for S&P 500 companies, which measures a company’s stock price compared with next year’s forecast earnings, has edged higher to 15.7 from 15.1 at the start of this year and 12.6 at the start of 2013.

“With valuations where they are ... we are pleasantly surprised at the resilience of the market,” said Colleen Supran, a principal of Bingham, Osborn & Scarborough, an investment management company. “Investors still seem to be able to find reasons not to panic.”

In government bond trading, prices rose. The yield on the 10-year Treasury note, which moves in the opposite direction to its price, dropped to 2.52 percent from 2.54 percent.

Oil had its biggest one-day drop since April, as Libyan oil appears poised to return to the market while global demand looks to be muted. Oil fell $2.23, or 2.2 percent, to $100.70.