Buffett’s Berkshire adds to stake in Occidental Petroleum with new $36M purchase

Occidental Petroleum (NYSE:OXY) +0.8% pre-market Wednesday after Berkshire Hathaway (BRK.A) (BRK.B) made a small purchase of the energy company, increasing its stake to 28.3%.

On February 7, Warren Buffett’s firm bought an additional 763,017 Occidental (NYSE:OXY) shares valued at ~$35.7M, purchased