Warren Buffett's Successor, Greg Abel, vs. Bill Ackman: 1 of these Billionaire Investors Just Piled Into Alphabet (Google), While the Other Nearly Dumped His Fund's Entire Stake

Ackman’s Pershing Square sold 95% of its Alphabet Class A and Class C stake, while reallocating about $2.1 billion into Microsoft. Berkshire, under Greg Abel’s first-quarter actions as CEO, more than tripled its Alphabet Class A position and initiated Class C shares, lifting its Alphabet stake to over $23 billion and 7% of the portfolio. The article is primarily a comparison of two high-profile investors’ differing views on Alphabet and AI rather than a direct company catalyst.

Analysis

The portfolio rotation signal matters more than the headline disagreement. When a value-oriented allocator with a very large, patient balance sheet adds to a capital-intensive AI platform while a hedge fund trims the same name to fund a lower-multiple software alternative, the market is effectively being told that AI exposure is bifurcating into "compute owners" versus "AI monetizers." That shift should keep a bid under hyperscaler capex beneficiaries and custom silicon suppliers, while compressing the relative appeal of mega-cap names that have already rerated on long-duration AI optionality.

The second-order read-through is that Alphabet is increasingly being treated as an infrastructure-plus-platform story, not just a search ad story. If capex stays elevated for 2-3 more quarters, the winners likely extend beyond the stock itself to chip designers, networking, power, and datacenter equipment; the losers are firms whose AI narrative depends on future monetization rather than current spending. Microsoft is the more direct beneficiary of that framing because incremental enterprise AI spend can be easier to see in bookings and cloud mix, which supports nearer-term multiple resilience even if the absolute valuation stays rich.

The contrarian point is that the market may be overestimating how divergent these views are on fundamentals and underestimating that this is mostly a time-horizon trade. Berkshire’s move is not a pure AI bet; it is a long-duration ownership of scarce infrastructure with embedded cash generation, while the hedge fund is optimizing a finite capital base. If Alphabet’s spend intensity peaks and free cash flow inflects over the next 12-18 months, the current enthusiasm for "AI capex winners" can rotate back toward balance-sheet quality and capital return, which would favor Alphabet relative to the more expensive AI monetization proxies.

Key Decisions for Investors

• Long GOOGL / short MSFT as a 6-12 month relative-value trade if you believe Alphabet's capex is nearing peak intensity and the market is overpaying for Microsoft’s near-term AI monetization visibility; target 8-12% spread capture, stop if Microsoft reaccelerates cloud growth for two consecutive quarters.
• Buy GOOGL call spreads 9-15 months out to express upside from a re-rating if cash flow stabilizes post-capex peak; structure for limited premium outlay and avoid outright long delta until spending growth decelerates.
• Long NVDA against a basket of high-multiple AI beneficiaries with weak current monetization; the trade benefits if the market continues to reward actual infrastructure spend over narrative exposure over the next 1-2 quarters.
• Add to BRK.B on pullbacks for a 12-24 month horizon as a cleaner way to own AI optionality with balance-sheet support; downside is lower beta than direct AI names, upside comes if management keeps redeploying cash into mispriced quality franchises.
• Avoid chasing GOOGL after the move unless you are underwriting a 2-3 quarter FCF inflection; the risk/reward is now more favorable for premium harvesting than for aggressive outright upside bets.