Hedge fund mogul David Tepper was one of the investors pressuring the company early in the year and in the second quarter his Appaloosa Management bought an additional 3.5 million shares, raising its stake to 18.8 million.
Refer to the input text as context and select the correct relationship between 'Appaloosa Management' and 'David Tepper' from the available options.
Options: director/manager, operator, industry, legal form