Berkshire Boosts Alphabet, Exits Amazon Under New CEO: $8B Chevron Sell, Portfolio Shift

Greg Abel wasted little time in reshaping Berkshire Hathaway's storied portfolio upon assuming the chief executive role, executing a bold repositioning that favors mega-cap tech over energy and diversified industrials. The conglomerate offloaded approximately $8 billion of Chevron shares in the first quarter as the oil giant's stock reached record highs, capitalizing on the elevated energy valuations driven by Middle East tensions. Simultaneously, Abel significantly increased holdings in Alphabet Inc. while completely exiting the Amazon position, a striking move given Berkshire's historical alignment with mega-cap growth themes.

The trades carryIncome earned from holding a position over time. symbolic weight within the broader context of mega-cap dominance and valuation mean reversion. The S&P 500's top 10 stocks have concentrated into unprecedented market-cap territory, with some metrics showing these mega-caps represent 38 percent of the broader index. Berkshire's simultaneous increase in Alphabet and exit from Amazon suggests Abel views Alphabet as the better opportunity at current valuations, perhaps reflecting confidence in its search dominance and AI momentumThe empirical fact that winners keep winning over the medium term. versus Amazon's slower cloud growth rates and capital intensity. The Chevron exit at record valuations demonstrates tactical opportunism; energy has been a core holding for decades, yet the current risk-reward appears less favorable.

Berkshire's moves carryIncome earned from holding a position over time. outsized weight given the firm's $3+ trillion asset base and signal institutions are beginning to rotate forward of the AI mega-cap concentration. Analyst commentary flags that while mega-caps have led the rally for months, breadth has deteriorated sharply, with the Russell 2000 and mid-cap indices lagging significantly. Abel's repositioning into Alphabet while selling energy and exiting consumer mega-caps (Amazon) suggests a view that not all mega-cap exposure is created equal in a higher-yield environment. The rotation pressured Amazon shares briefly yet supported Alphabet and financials.

Critics note that Berkshire's moves may simply reflect tax-loss harvesting or rebalancing mechanics rather than forward-looking convictions. Chevron's energy fundamentals remain strong given supply constraints and geopolitical premiums, while Amazon's margin expansion trajectory could yet justify valuation. The debate remains whether Berkshire is leading a broader institutional rotation toward quality mega-caps (Alphabet, MSFT) or merely managing normal portfolio rebalancing.