This Unstoppable AI Stock Is Up 97% Since Warren Buffett Bought It, and There Could Be More Upside Ahead

Alphabet posted accelerating top-line growth of 22% versus 18% in the prior quarter, with Google Cloud revenue up 63% year over year to $20 billion and a cloud backlog of $460 billion. Management plans to spend $180 billion-$190 billion on capex this year, with spending expected to accelerate in 2027, supporting AI-driven growth. The article argues the stock remains reasonably valued at 28.2x forward earnings and still has upside after Berkshire Hathaway's purchase.

Analysis

Alphabet is increasingly behaving like a self-funding AI infrastructure compounder rather than a pure ad-driven platform. The key second-order effect is that cloud backlog visibility reduces the market’s fear that capex will outpace monetization; that matters because it lowers the cost of capital applied to the entire AI stack and makes Alphabet a more credible long-duration beneficiary of enterprise AI adoption. If cloud growth holds above the high-40s to 50s while backlog converts, the market may rerate GOOG/GOOGL from a "quality growth" multiple toward a platform + infrastructure hybrid.

The crowded trade risk is less about fundamentals and more about positioning. Berkshire’s implied endorsement and the stock’s sharp post-purchase move invite momentum ownership, but that can become a source of near-term volatility if any quarterly cloud print decelerates or capex ramps faster than revenue. The most important inflection is not the next quarter’s headline EPS; it is whether investors start discounting 2027 spend as a margin headwind rather than a growth catalyst. If that happens, the stock can still work over 12-24 months, but the path likely becomes choppier and more event-driven.

Relative winners are the AI supply chain names that benefit from Alphabet’s spending cadence, especially networking, power, and semiconductor infrastructure vendors, though the article itself doesn’t name them. The contrarian view is that Alphabet’s valuation still may not be cheap if earnings estimates are too static and if incremental AI monetization is slower than cloud adoption; in that case, the apparent upside is mostly multiple support rather than true upside revision. Also, the market may be underestimating how much of the cloud backlog is low-margin or GPU-pass-through revenue, which would cap operating leverage even if revenue growth remains strong.

Key Decisions for Investors

• Stay long GOOG/GOOGL on 3-6 month horizon; add on any post-earnings weakness if cloud growth stays above 40% and backlog continues expanding, because the risk/reward still favors multiple support and estimate revisions over time.
• For those already long, finance the position with an out-of-the-money covered call 2-4 months out to harvest elevated momentum premium while capping downside if the market re-prices capex risk.
• Pair trade: long GOOG/GOOGL vs short a basket of slower-growing ad-tech/legacy media names over the next 6-12 months; Alphabet’s enterprise AI and cloud conversion should create better earnings durability than ad-dependent peers.
• Use any 10%-15% drawdown in GOOG/GOOGL as an entry point for incremental longs; if the drawdown is driven by capex fear rather than demand deterioration, the setup is likely a buyable de-risking event.
• Watch for signs of cloud backlog conversion slipping; if quarterly cloud growth falls meaningfully below the high-40s, reduce exposure, because the thesis depends on sustained backlog monetization, not just AI enthusiasm.