Trading was light because the bond market was closed for Columbus Day and Japan’s markets were closed for a national holiday.

"It’s a bit of a surprise to see this much strength on a low-volume day. You have to give credit to the Motorola numbers," said Peter Dunay, chief market strategist at Wall Street Access, a New York-based brokerage firm.

But he added, "It’s really anticipation that’s driving the market. Most analysts are now expecting even more from earnings, which could put the market under pressure."

The Dow closed up 89.70, or 0.9 percent, at 9,764.38, having gained 1.1 percent last week for its third winning week in four. Earlier in the day, the Dow rose as much as 108.81. Today’s close was the highest level since June 5, 2002, when the blue chips closed at 9,796.80.

The broader market also finished higher. The Nasdaq composite index gained 18.22, or 1 percent, to 1,933.53, following a weekly advance of 1.9 percent. It was the Nasdaq’s highest close since January 31, 2002, when the tech-focused index stood at 1,934.03.

The Standard & Poor’s 500 index rose 7.29, or 0.7 percent, to 1,045.35, having risen 0.8 percent. It was the highest level seen since June 5, 2002, when the index finished at 1,049.90.

Motorola Inc. rose 8 cents to $13.87 after the world’s second-largest mobile-phone maker reported quarterly earnings that beat analysts’ expectations by 2 cents per share.

"People are feeling pretty good about the Motorola earnings," said Mark Donahoe, managing director at US Bancorp Piper Jaffray in Minneapolis. "There also was an upgrade of the software sector by Lehman Brothers, which helped things."

Stocks have rallied sharply since mid-March, but investors are now looking for strong evidence of economic improvement. Analysts say third-quarter earnings reports, which are released in earnest this week, will be key in determining whether the market can go higher, although some caution that investor expectations might be becoming too high.