keywords: stocks wal goldman reuters mart
text: U.S. Stocks Higher; Wal-Mart, Oil Help (Reuters) Reuters - U.S. stocks opened with an upbeat\start to 2005, rising on Monday as oil prices tumbled, Wal-Mart\Stores Inc.  brightened its outlook for December sales,\and Goldman Sachs raising fourth-quarter estimates for Google\Inc.  and Yahoo Inc. .