David Tepper acquired 2.84 Million Occidental Petroleum Corp. shares worth $163 Million. That's 8.33% of their entire equity portfolio (4th largest holding). The first Occidental Petroleum Corp. trade was made in Q3 2005. Since then David Tepper bought shares four more times and sold shares on six occasions. The stake costed the investor $43.6 Million, netting the investor a gain of 274% so far.