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Seven rules for tech investing

The overall stock market may have recovered from the Great Recession, but the tech sector has never fully recovered from the dot-com bust in the early 2000s. Here are seven rules for investing in high-tech companies while avoiding wild speculation:

2. Look for a large, locked-in user base

Don Ryan/AP/File
People crowd the aisles during the grand opening of a Microsoft retail store in downtown Portland, Ore., in June. Microsoft Corp. may not be the most exciting stocks, but its products have staying power.

These companies benefit from substantial recurring revenue from enterprise software or long-term contracts for information-technology services or both, which often cost users a lot to switch out of.

"Think of Microsoft and Oracle," says Mr. Frederick. "They are steady. Corporations are going to continue to use their software."

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