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Top investor Link likes the Caterpillar comeback

A Caterpillar 953C track loader moves soil to a dump truck as contractors work during the construction of residential housing in the Norton Commons subdivision in Louisville, Kentucky.
Luke Sharrett | Bloomberg | Getty Images
A Caterpillar 953C track loader moves soil to a dump truck as contractors work during the construction of residential housing in the Norton Commons subdivision in Louisville, Kentucky.

Stephanie Link, managing director at TIAA, acquired shares of Caterpillar for her CNBC "Halftime Report" model portfolio Friday.

Shares of the construction and mining equipment maker have rebounded this year after a drop in oil prices and Chinese economic uncertainty hit sales last year.

Here's why Link likes the stock.