| Rank | Ticker | Company Name | Value ($B) | Portfolio % | Sector | Adjust Value |
|---|
Berkshire Hathawayβs recent 13F filing reveals a significant portfolio rebalancing shift: Alphabet Inc. (GOOGL) has surged to become Warren Buffett and Greg Abelβs 3rd largest equity holding, overtaking long-standing financial and consumer staples positions.
Understanding the Portfolio Concentration Metrics
β’ Top 3 Concentration Ratio (CR3): Measures the total percentage weight of Berkshire's top 3 positions. A CR3 above 50% indicates heavy reliance on key convictions.
β’ Herfindahl-Hirschman Index (HHI): Computed by summing the squared percentage shares of all holdings. An HHI above 1,800 signals high portfolio concentration and single-stock exposure risk.