Berkshire boosted its Alphabet stake by 83% during its biggest stock-buying quarter in years businessinsider.comBerkshire CEO Greg Abel Is Sitting on More Than $360 Billion in Cash. Here's How His Deal-Making Approach Differs From Warren Buffett's. Yahoo FinanceBerkshire Bought Alphabet Stock in Q2—and Maybe Microsoft Too Barron'sAll the Stocks Berkshire Hathaway Bought and Sold in Q2 Kiplinger