Group 1 - Berkshire Hathaway's stock has underperformed since Warren Buffett announced his retirement plans, with a decline of over 12% since May 3, reducing year-to-date gains to 4.5%, lagging behind the S&P 500's 7% increase [2] - The B-class shares of Berkshire Hathaway are on track to record their longest monthly losing streak since June 2022 if they close down in July, marking a significant shift after a record 573 days above the 200-day moving average [3] - Buffett has lowered expectations for Berkshire's performance, suggesting it will only slightly outperform the average of U.S. companies due to the large cash reserves making significant investment impacts unlikely [3] Group 2 - Despite recent challenges, Buffett's long-term performance record remains exceptional, with Berkshire's average annual return being double that of the S&P 500 since the 1960s, and a total return of 5,502,284% from 1964 to 2024 [3]