Tech stocks are back -- and it’s not just the big guns this time. Sure, large-cap tech stocks hit a nearly 16-year high last week -- buoyed by Facebook Inc.’s 19 percent surge this year -- but that pales in comparison to their smaller peers. The Russell 2000 Technology Index capped a seven-week rally of 12 percent on Friday and is outpacing the S&P 500 Information Technology Index by 3.5 percentage points year-to-date, the most since 2013.

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