"After all the terror warnings this week, no one is willing to make big bets on stocks," said Peter Cardillo, president and chief strategist of Global Partner Securities. "But no one is showing any irrational behavior, and that's a good sign."

The Dow Jones industrial average closed up 58.20, or 0.6 percent, at 10,216.08, according to preliminary calculations, after rising 52 points yesterday.

Broader stock indicators also ended higher. The technology-focused Nasdaq composite index fared particularly well, advancing 24.18 or 1.4 percent, at 1,697.63, while the Standard & Poor's 500 index was up 11.06, or 1.0 percent, at 1,097.08.

The Commerce Department reported that orders for big purchases including cars and communications equipment jumped 1.1 percent in April, a bigger increase than expected. It was the fifth straight month that orders for durable goods rose. A separate report from the Labor Department report showed jobless claims dropped by 9,000 to 416,000 last week, the lowest level in eight weeks.

But investors were still cautious, unnerved by the government's warnings earlier this week that future terrorist attacks were all but inevitable. Analysts said the unease translated into a market in which investors were more inclined to sit tight – rather than buy.

Technology stocks were mixed. Ciena dropped

36 cents to $6.08 on weak second-quarter sales and a warning that the third quarter could also be disappointing. But Microsoft jumped $1.13 to $54.82 while Cisco Systems gained 34 cents to $16.90.

Among blue chips, Boeing dropped 26 cents to $44.15 on news it will deliver eight fewer widebody jets than expected next year.

Krispy Kreme rose $1.55 to $41.10 after reporting first-quarter results slightly ahead of expectations.

The market's touch-and-go mood wasn't surprising given the political uncertainty investors have had to deal with all week. Stocks fell sharply Monday and Tuesday after U.S. officials said suicide bomber attacks could occur domestically, and that terrorists were working aggressively to acquire nuclear weapons.