Utilize the input text as a context reference, choose the right relationship between 'Appaloosa Management' and 'Hedge fund' from the options.
Options: product/material produced, currency, creator, industry

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.
industry