All three indexes ended higher for the week. The Dow and S&P 500 have advanced for six weeks in a row, while the Nasdaq has gained ground the past five weeks.
Stocks have been trading near the highest levels since May 2008. The S&P 500 closed less than five points below the key 1,420 level.
Investors also focused on the latest corporate earnings and sales data, as well as reports on consumer sentiment and leading economic indicators.
Trading volume has been low over the past few days, with many investors on vacation and little news out of Europe.
"There's no volume out there," said Bernard Kavanagh, vice president of portfolio management for St. Louis-based broker Stifel Nicolaus. "It's the typical end of August trading."
German Chancellor Angela Merkel reiterated late Thursday that European policymakers are committed to doing everything they can to support the euro, reigniting hope for further central bank action.
Economy: The Thomson Reuters/University of Michigan Consumer Sentiment Index rose to 73.6 in early August from 72.3 last month. The preliminary reading was expected to come in at 72.2.
Separately, the Conference Board said its index of leading economic indicators for July rose 0.4%. It was expected to have increased by 0.2%.
Companies: Gap (Fortune 500) reported better-than-expected quarterly earnings late Thursday. The retailer also raised its outlook for full-year earnings and increased its dividend payment. Shares rose nearly 5%. ,
Shares of J.M. Smucker (Fortune 500) rose 5% after it reported earnings that topped analysts' expectations and issued an upbeat outlook. ,
Footlocker (Fortune 500) reported strong second-quarter results, sending its shares up 1.8%. ,
Facebook ( shares fell to another record low one day after the social media company's )"lock-up period" for company insiders expired.
Shares of Groupon ( fell to a another all-time low, finishing a brutal week in which the company reported )sales growth that disappointed investors.
Oil for September delivery rose 41 cents to end at $96.01 a barrel.
Gold futures for December rose $2 to settle at $1,619.40 an ounce.
Bonds: The price on the benchmark 10-year U.S. Treasury rose, pushing the yield down to 1.80% from 1.81% late Thursday.
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