Wal-Mart retakes the No. 1 slot on the Fortune 500 this year. See where America's largest corporations rank, and why. (
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See the 37 companies that made both the Fortune 1000 and Best Companies to Work For lists this year. (
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These 20 stocks produced the largest total returns to shareholders in 2006. For this list, we included only Fortune 500 companies that traded for over $2. (
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Exxon Mobil was the most profitable company last year by far, raking in $39.5 billion in earnings. Who else made the top 20? (
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