Activist Starboard Value Adds Stakes in Clean Harbors, Alibaba

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Starboard Value LP, the activist hedge fund run by Jeff Smith, acquired a new stake in Clean Harbors Inc. as fellow activist Relational Investors reduced its holding in the hazardous-waste disposal company.

The New York-based fund bought about 2.3 percent of Clean Harbors’ shares during the fourth quarter, according to a filing Tuesday with the U.S. Securities and Exchange Commission. Starboard also revealed it bought 400,000 Alibaba Group Holding Ltd. shares and sold most of its AOL Inc. stake.