Warren Buffett Has More Than 50% of His Portfolio in These 3 Stocks. Which One Is the Best Buy Today?

Alphabet is identified as the preferred purchase among Berkshire Hathaway's three largest equity holdings—Apple, American Express and Alphabet—because it trades below 17x forward P/E while offering what the article views as the strongest long-term growth outlook. The bullish thesis centers on Alphabet's end-to-end AI stack, custom-chip cost advantages, Gemini-powered Search products and distribution through Chrome, Android and Apple’s default-search agreement. Apple, about 22% of Berkshire's portfolio, is cited for its ecosystem and potential iPhone Duo growth catalyst, while American Express, over 17%, benefits from its closed-loop network and affluent customer base.

Analysis

The actionable asymmetry is Alphabet’s potential to convert AI from a capex burden into a distribution-led margin defense: search, Chrome, Android, Workspace, and Cloud create multiple surfaces over which a single model investment can be monetized. The near-term risk is not that AI fails to drive engagement, but that answer-led search reduces paid-click inventory faster than new commercial formats are priced; that would pressure Search revenue per query before cost savings appear. Over 6-18 months, evidence that AI-generated results sustain query growth and advertiser ROI would warrant multiple expansion, while sustained traffic-acquisition-cost pressure would be the key falsifier.

Apple’s ecosystem economics remain unusually durable, but its incremental upside is more dependent on a hardware refresh translating into higher mix and services attach rather than unit growth alone. The purported new-device catalyst should be independently verified before underwriting it: supply-chain orders, carrier promotions, and management commentary matter more than product-media enthusiasm. A weaker-than-expected upgrade cycle would also expose the sensitivity of Apple’s high-margin services stream to device-base growth and to any change in its search-distribution economics.

American Express is the cleaner consumer-quality compounder but offers less idiosyncratic upside absent an acceleration in billed business or card-fee growth. Its affluent skew delays, rather than eliminates, macro risk: deterioration in travel-and-entertainment spend or rising charge-offs would compress both earnings expectations and its premium valuation. The non-obvious beneficiary of broader AI infrastructure deployment could be AVGO, but chip-sales assertions require confirmation through disclosed backlog, customer concentration, and incremental gross-margin data rather than promotional claims.

Key Decisions for Investors

• Establish a 3-6 month long GOOG / short AAPL pair only after confirming relative valuation, consensus EPS revisions, and beta sizing; thesis is superior AI monetization optionality versus Apple’s more mature device-cycle exposure. Exit if Google Search revenue growth decelerates for two consecutive reported quarters while AI capex remains above consensus, or if Apple demonstrates a material upgrade-cycle acceleration.
• Add GOOG on post-earnings weakness if management quantifies stable or improving commercial-query monetization and Cloud operating-margin expansion; target 10-15% relative upside versus mega-cap tech over 6-12 months, with a 7-8% stop on adverse Search monetization or regulatory developments.
• Keep AXP neutral to modest underweight versus V/MA over the next 1-3 months; monitor billed-business growth, T&E spend, and net write-off trends. Upgrade only if premium-card fee growth offsets normalization in transaction volume; reduce if credit provisions rise faster than revenue.
• Set an AVGO alert rather than initiate on reported third-party AI-chip demand: require evidence of diversified customer commitments and accretive incremental margins. If verified, AVGO offers a 6-18 month infrastructure exposure less dependent on NVDA’s GPU supply chain; customer concentration or hyperscaler insourcing is the primary thesis risk.