 Even the great Warren Buffett Trades, Portfolio has suffered losses during the tech sector sell-off that has gripped markets in 2022. According to Berkshire Hathaways BRK.B , Financial BRK.A , Financial latest 13F report, the conglomerate owned a number of technology stocks at the end of the first quarter of 2022, and some of them have declined in value by as much as 40. 