Donald Yacktman acquired 1.11 Million Pioneer Natural Resources shares worth $298 Million. That's 2.64% of their equity portfolio (12th largest holding). Donald Yacktman started to build up the position in Pioneer Natural Resources in Q3 2022 and continued to invest until Q3 2023. Since then they sold 161 Thousand shares. The stake costed the investor $248 Million, netting the investor a gain of 20% so far.