Jon Najarian buys Intersil on unusual activity

Source: Intersil

CNBC "Halftime Report" trader Jon Najarian bought shares of Intersil, a maker of semiconductor chips, on Friday after spotting unusual activity in the options market.

Najarian is one of the top traders in CNBC Pro's Model Portfolio competition, up 8.5 percent on the year, beating the S&P 500, which is down 4 percent.

Here is what Najarian sees and why he thinks the stock can rally from here...

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