Briefing
- Greg Abel's debut quarter as Berkshire Hathaway CEO produced the most visible break from Warren Buffett's recent stock picks, with full exits from Amazon, Visa, and Mastercard and a return to airline investing after years of avoidance.
- Berkshire acquired a $2.6 billion stake in Delta Air Lines, marking the conglomerate's re-entry into a sector Buffett famously abandoned at a loss during the pandemic.
- Berkshire more than tripled its position in Alphabet, which multiple sources describe as the quarter's largest addition by proportional size, reinforcing a concentration in what the Motley Fool characterises as a near-monopoly in search.
- Berkshire also reduced its UnitedHealth position and initiated a stake in Macy's, a retailer under active pressure to restructure, signalling willingness under Abel to take contrarian positions in distressed consumer names.
- The simultaneous exit from Visa and Mastercard removes two of Buffett's higher-conviction fintech holdings and raises questions about Abel's view on payment network valuations.
- Investors will now watch subsequent 13-F filings to determine whether the Delta and Alphabet bets reflect a durable strategic shift or opportunistic positioning in Abel's opening quarter.
Analysis
- Berkshire's $2.6bn Delta stake re-prices airline sector quality perception over the next two to four quarters. Abel's entry signals institutional reconsideration of carriers after the pandemic-era capital destruction that drove Buffett's 2020 exit at a loss. Delta specifically benefits from a Berkshire halo effect, but the read-through for United and American is more limited given Delta's superior unit revenue and balance sheet discipline relative to peers.
- The simultaneous exit from Visa and Mastercard removes one of the most visible long-term institutional endorsements of payment network valuations. With the higher-for-longer rate environment under Warsh compressing long-duration multiples, Berkshire's exit adds a sentiment headwind to networks already trading at premium multiples. Neither V nor MA has a near-term fundamental deterioration catalyst, but the removal of Berkshire's implicit quality signal increases the networks' vulnerability to any incremental margin or volume deceleration.
- Berkshire tripling its Alphabet position, combined with Ackman's Microsoft entry disclosed this week, creates a dual institutional endorsement of mega-cap AI search and cloud within a single earnings cycle. This compounds upward re-rating pressure on GOOGL specifically, reinforcing concentration in names with defensible AI moats. In the Warsh higher-for-longer rate environment, where long-duration growth multiples face compression, the market's revealed preference is converging on dominant-revenue AI platforms over earlier-stage AI beneficiaries.
Historical Context
- May 2020
Buffett sold Berkshire's entire airline portfolio, including Delta, at a loss during the pandemic, publicly stating airlines had structurally changed. Abel's return to Delta within five years directly reverses that call, signalling a new management view on airline unit economics and balance sheet resilience post-consolidation.
- 2016–2017
Berkshire's initial airline purchases marked the first time Buffett reversed his decades-long aversion to the sector after consolidation reduced the number of major US carriers to four. The current re-entry under Abel mirrors that inflection logic but occurs with Delta at a stronger competitive position relative to peers.
- 2011–2013
Berkshire's acquisition of IBM shares, later fully exited by 2018 at a loss, established a precedent for a Buffett-era technology entry that the successor management subsequently unwound. The Alphabet position tripling under Abel inverts this pattern, with new management adding to tech rather than inheriting and exiting it.
Connected Events
Pershing Square takes new Microsoft stake, exits Hilton and slashes Alphabet position
Pershing Square's new Microsoft position, disclosed this week with Ackman calling the valuation 'highly compelling', and Berkshire's tripling of Alphabet together represent two of the largest value-oriented institutional endorsements of mega-cap AI platforms in the same reporting cycle, reinforcing a convergence trade toward dominant AI franchises.
Amazon replaces Rufus chatbot with Alexa for Shopping in AI strategy pivot
Amazon's exit from Berkshire's portfolio coincides with Amazon internally retiring its Rufus chatbot and pivoting to an agentic Alexa for Shopping platform, raising the question of whether Abel's team viewed Amazon's AI consumer strategy as insufficiently differentiated to justify the position at current multiples.
Bond market pushes rates higher as Kevin Warsh begins as Fed chair
The bond market pushing rates above 4.5% as Warsh assumes the Fed chair role directly pressures the valuation case for Visa and Mastercard, whose premium multiples depend on compounding free cash flow in a lower-discount-rate environment, compounding the sentiment impact of Berkshire's exit from both names.
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