Warren Buffett Continues to Load Up on Alphabet, and This 1 Number Is the Big Reason Why

Berkshire Hathaway boosted its Alphabet stake by 83% in Q2, making Alphabet its third-largest holding (ahead of Coca-Cola). The purchases included shares bought on the open market and a $10B private placement tied to Alphabet’s $84.75B equity sale in June, with the buying ramping alongside paid-click growth reaccelerating from ~2% to 4% in 1Q25/2Q25. The article argues the paid-click momentum suggests Search durability and improved monetization of AI features (e.g., AI Overviews / AI mode), supporting a positive view of Alphabet’s AI-era competitive position.

Analysis

The market is likely underestimating how important sustained unit growth is for a mature ad platform. If click volumes are re-accelerating while Alphabet layers in AI features, the implication is not just better near-term revenue; it suggests the core franchise can still fund the AI capex race internally, which lowers balance-sheet risk versus peers that must finance inference and data-center buildouts externally.

That has second-order implications for the AI stack. A stronger internal economics loop at Alphabet increases the odds it keeps shifting more workload to proprietary silicon and away from third-party accelerators, a modest but real medium-term headwind for NVDA at the margin. It also pressures search-ad competitors and alternative discovery platforms because budgets tend to stay with the channel that preserves intent capture, not the one with the most novelty.

The key risk is that the current inflection is still too fresh to declare durable. Over the next 1-3 quarters, watch whether monetization quality holds if AI answers reduce page clicks but increase engagement; if revenue per click softens, the bull case becomes a volume illusion. Over 6-18 months, antitrust remedies or a sharp step-up in capex could compress the multiple even if operations remain healthy.

Contrarian view: this may be less about Buffett’s endorsement and more about the market realizing Alphabet is not a melting-ice-cube search business. If paid-click growth stays above low-single digits into the next print, the stock can re-rate, but if it slips back, the move is probably just sentiment-driven positioning around a widely owned mega-cap.

Key Decisions for Investors

• Long GOOGL/GOOG on 1-3 month weakness into the next earnings cycle; thesis is that durable click reacceleration should support a multiple re-rating if revenue-per-click does not deteriorate. Falsify if paid-click growth drops back below low-single digits or monetization weakens.
• Use a GOOG vs NVDA pair only as a small relative-value trade: long GOOG, short NVDA, targeting the market eventually pricing Alphabet's lower inference-cost structure and internal silicon advantage. Risk: NVDA demand can stay supply-tight longer than expected, so keep size modest and cover if NVDA re-accelerates guide-up.
• If already long broad tech, rotate part of that exposure from QQQ/XLK into GOOGL to concentrate on a self-funding AI beneficiary rather than a pure AI hardware multiple. This is a 6-18 month expression, not a day-trade.
• Watch BRK.B for passive flow support, but do not chase it as a standalone trade; the economic impact is mostly signaling rather than fundamental. Only add if you want a lower-vol proxy for the same thesis.
• Set a regulatory alert on Alphabet antitrust headlines and any evidence that AI Overviews is cannibalizing high-value search queries. A material remedy or a revenue-per-click miss would invalidate the thesis faster than a general market pullback.