3 Large-Cap Stocks to Buy Before August Earnings Test the AI Trade

August earnings are shifting the focus from AI demand to AI payoff

After a nearly 8% first-half gain in the S&P 500, August is less a moment to chase momentum than a moment to be selective. The market is still being supported by strong first-quarter earnings momentum and a tape where more estimates went up than down. Goldman has also lifted its S&P 500 year-end forecast to 8,000. But the bigger question now is whether heavy AI spending can keep converting into durable revenue and cash flow fast enough to keep investors on board.

Why Alphabet's capex reset matters for the whole trade

That question went center stage after Alphabet raised its 2026 capital expenditure guidance, triggering broad profit-taking across AI infrastructure and semiconductor stocks. The bull case is still backed by earnings strength, with AI-infrastructure beneficiaries expected to account for roughly half of 2026 earnings growth. The bear case is simpler: investors may no longer reward big spending sprees before the returns are more visible. That backdrop points to stocks with real AI revenue, diversified cash flows, and room to outperform if the trade gets more selective-namely Broadcom, Alphabet, and Amazon.

Broadcom: AI demand with visible revenue and customer breadth

Broadcom looks like one of the cleaner ways to own the AI build-out because the revenue is already showing up in results, not just in market narrative.

Revenue and customer commitments are already visible

In the latest quarter, Broadcom produced $16.75 billion in revenue, including $6.1 billion of AI semiconductor sales. It also disclosed a $30 billion long-term custom silicon arrangement with Apple, which adds another layer of recurring-revenue visibility on top of its broader custom-chip work with major cloud customers.

The pullback looks more sector-driven than company-specific

Broadcom has also pulled back from its June high, even while posting solid operating results. That makes the weakness look more like sector-wide valuation compression than a broken business model. For investors who want AI exposure without owning the most capital-heavy end of the trade, Broadcom offers a useful middle ground: real AI revenue today, plus customer depth that includes both cloud giants and Apple.

The near-term catalyst is hyperscaler spending

The next test is straightforward: hyperscaler earnings, when Amazon, Meta and Microsoft are set to report quarterly results this week. If those companies keep AI infrastructure spending on track, that should support Broadcom's case.

Alphabet: strong cloud growth is no longer enough on its own

Broadcom helps show that AI demand is real. Alphabet forces the harder question: can that demand pay back the spending quickly enough to rebuild investor patience?

The market is now scrutinizing returns, not just demand

Last month changed the tone. Alphabet raised its 2026 capital expenditure guidance to $195 billion to $205 billion, and the market responded badly. Shares slid 7% on Thursday as investors started treating huge AI outlays less as automatic proof of demand and more as a test of capital-allocation discipline.

Bulls still have evidence to point to. Google Cloud revenue rose 82% to $24.8 billion, and Reuters said demand for cloud services has been strengthened by the AI boom. The debate is no longer about whether demand exists; it is about whether that demand is arriving fast enough to justify the current level of spending and protect margins.

Alphabet's other businesses still help de-risk the bet

Alphabet is not making this investment push from a position of obvious weakness. Reuters has reported ongoing strength in cloud demand, and in previous coverage, search share remaining around 90% was highlighted as evidence of Search's continuing scale. That matters because the spending is being funded against a still-dominant advertising business while cloud growth helps begin to offset the outlay.

What investors need to hear this week

The key trigger is not just another quarter of solid numbers. It is management tone. Investors want evidence that Alphabet can keep growing cloud revenue and monetizing AI across its products without appearing to spend beyond what the returns can support.

Amazon: a steadier large-cap option if capex stays high but scrutiny rises

If Broadcom is the cleaner AI supplier and Alphabet is the more contentious AI-spending story, Amazon looks like the steadier all-weather choice.

A broader business mix offers more resilience

Amazon should still benefit if AI spending remains healthy-more hyperscaler capex is likely still on track-but investors are no longer giving that spending a free pass. After Alphabet lifted its 2026 capital expenditure guidance, the market sold off several AI-linked names. In that kind of setup, breadth matters. Amazon is not just an AI proxy; it has commerce, cloud, and advertising flowing through one ecosystem, which should help it absorb shocks better than a more concentrated AI bet.

The August test is disciplined growth

The August question is whether Amazon can show that demand is still strong enough to justify investment without looking reckless with cash. Its AI infrastructure spend can still support long-term cloud strength, but investors now want that strategy paired with steady operating performance across the rest of the business.

What to watch in the earnings test

• Whether management frames capex as tied to measurable cloud and operating gains
• Whether AWS demand remains strong enough to support the spending case
• Whether the broader business continues to show resilience if AI sentiment stays choppy