BRK.A / BRK.B

Berkshire Portfolio Concentration & Holding Rank Analyzer

Total Equity Portfolio Value
$284.5B
Top 10 Holdings Tracked
Alphabet (GOOGL) Rank & Share
#3 (7.82%)
$22.25 Billion Value
Top 3 Concentration Ratio
58.4%
HHI Index: 1,842 (Moderate)
πŸ“Š Interactive Holdings Allocation Treemap
Click any block to adjust share weighting
πŸ“‹ Detailed Holding Ranks & Valuation Breakdown
Rank Ticker Company Name Value ($B) Portfolio % Sector Adjust Value
πŸ“š Market Context & Analytical Insights

Berkshire Hathaway’s recent 13F filing reveals a significant portfolio rebalancing shift: Alphabet Inc. (GOOGL) has surged to become Warren Buffett and Greg Abel’s 3rd largest equity holding, overtaking long-standing financial and consumer staples positions.

Key Insight on Concentration Strategy: Historically dominated by Apple Inc. (AAPL), American Express (AXP), and Bank of America (BAC), Berkshire's portfolio demonstrates a strategic rotation into cash-rich, high-margin technology infrastructure with Alphabet. This shift balances traditional cyclical holdings with cash-generative secular AI leaders.

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.

Berkshire Portfolio Concentration & Rank Mechanics

Read the explanation

In Berkshire Hathaway's portfolio analyzer, each holding's rank and share are calculated dynamically by dividing individual valuation by total tracked equity. When you trigger a scenario like a twenty-five percent surge in Alphabet, its valuation increases from twenty-two point two five to twenty-seven point eight one billion dollars. Because Alphabet's value now exceeds Coca-Cola's twenty-four point five billion, the recalculate function promotes Alphabet to the number three rank. The treemap redraws node areas proportionally, while concentration metrics recompute the top three share and Herfindahl index in real time.

Alphabet highlighted as #3 holding
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