It's no big secret that Warren Buffett has been a net seller of stocks recently. Thanks to several massive stock sales, and a few smaller ones, Berkshire Hathaway 's ( BRK.A 0.50%) ( BRK.B 0.52%) cash stockpile has ballooned to $325 billion as of the most recent quarter, far more than the conglomerate has ever had on hand before.

The Omaha, Nebraska-based conglomerate scooped up 763,000 shares of the Houston-based oil and gas producer on Friday for $35.7 million, according to a filing.

Occidental Petroleum (OXY) is not just another oil company. It’s a heavyweight in fossil fuel production, chemicals, and carbon capture

I’ve spent 13 years reporting on and analyzing the investment space, and no single person has accounted for more of my attention than billionaire, longtime Berkshire Hathaway (BRK.B) CEO, and ukulele aficionado (no,