When Warren Buffett takes the stage at Berkshire Hathaway's annual meeting in Omaha on Saturday, he'll have a lot to talk about. The 92-year-old investor has had a busy year. He snapped up additional shares of one of his favorite energy plays, Occidental Petroleum , on several occasions — including in March. That brings the conglomerate's stake in the energy producer to 23.5%. In April, Buffett raised Berkshire Hathaway 's stakes in five Japanese trading houses to 7.4% each.
mountain Monolithic Power Systems Monolithic reported a first-quarter earnings and revenue beat on Friday. Adjusted earnings per share came in at $3.00, compared with the $2.98 expected from analysts polled by StreetAccount. However, its revenue guidance for the second quarter of $430 million to $450 million came in below estimates of $455.4 million. Shares are up about 14% year to date.