The S&P 500 Is Not Enough: My 3-Stock Starter Portfolio for New Investors

Amazon (NASDAQ: AMZN), Meta Platforms (NASDAQ: META), and Alphabet (NASDAQ: GOOG) (NASDAQ: GOOGL) are my three-stock starter portfolio for new investors in October 2026. I think these stocks offer more long-term growth potential than an S&P 500 index fund.

The S&P 500 has delivered an average annual return of 9.98% since 1928 through 2025, according to The Motley Fool's research. All three of these tech giants have a track record of beating the market, and they're still posting the kind of growth that can sustain that outperformance.

Index funds have their place as an anchor investment. But adding a few quality growth stocks from companies people use every day is a practical way to aim for above-average returns without taking too much risk.

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1. Amazon's cloud growth can power the stock ahead of the S&P 500

To beat the market, I want to see a business growing revenue faster than the index's historical average annual return. Amazon is clearing that bar, with total net sales up 20% year over year in the second quarter of 2026, reaching $200 billion.

Amazon's growth is coming from multiple engines, including e-commerce, advertising, and cloud computing. For me, Amazon Web Services (AWS) is the biggest driver of potential outperformance versus the index.

Demand for artificial intelligence (AI) cloud services pushed AWS revenue up 37% year over year in Q2 2026 to $42 billion. Amazon now plans to spend roughly $220 billion this year on data center capacity and related technologies to keep up with demand.

Amazon's trailing price-to-earnings (P/E) ratio is about 20 as of Sept. 30, although its trailing earnings got a one-time boost last quarter from its investment in Anthropic. Amazon's forward P/E on 2026 earnings estimates, excluding that gain, is about 30, which is still reasonable relative to the company's growth.

The stock could dip if cloud demand cools, but over the long term, AWS could grow into a much bigger business as more enterprises adopt cloud services and use AI tools. I believe buying Amazon today and holding for at least five years will deliver superior returns.

2. Meta's advertising business is still compounding with billions of daily users

Meta ended the second quarter of 2026 with over 3.6 billion daily active users across Facebook, Instagram, Messenger, and WhatsApp. That massive user base supports an advertising business that generates nearly all of Meta's revenue each year.

Advertising growth is accelerating thanks to Meta's AI investments. Second-quarter 2026 revenue surged 28% year over year to $61 billion. AI is improving content recommendations for users and helping advertisers get a better return on their ad spend.

Meta is also spending aggressively on data centers and AI systems to keep that growth going. It plans to spend at least $130 billion in 2026 to support its AI initiatives. The company is also rolling out products that could expand its revenue opportunities over time, including Meta glasses and its personal AI agent, Muse.

Meta's trailing P/E is 28 as of Sept. 30. Key risks include ongoing legal costs tied to user safety and regulatory changes that could affect how it targets and monetizes ads. Even so, I like Meta's growth runway as one of the world's leading digital advertisers with the scale and resources to invest heavily in data centers and AI products.

3. Alphabet pairs advertising momentum with Google Cloud's explosive growth

I like Alphabet for many of the same reasons as Meta. It's a dominant digital advertiser through Google Search and YouTube, and it has the resources to be a leader in AI for decades. Alphabet's revenue grew 24% year over year in Q2 2026, reaching $120 billion.

Advertising across Search and YouTube is still its biggest revenue engine. In the second quarter of 2026, Google Services revenue grew 15% year over year to $94 billion. Search revenue was up 17%, while YouTube ads grew 13% versus the year-ago quarter.

Alphabet is also a major cloud computing provider. Google Cloud revenue jumped 82% year over year to nearly $25 billion in Q2 2026. The company is investing heavily in data center infrastructure to deliver on a $514 billion cloud backlog, adding long-term revenue visibility.

Alphabet's forward P/E is 29 based on 2026 earnings estimates as of Sept. 30. The trailing P/E looks cheaper at 17, but trailing earnings include a large one-time gain tied to Alphabet's investment in Space Exploration Technologies (aka SpaceX) and a private company.

A slowdown in cloud demand is a real risk. Still, I would buy Alphabet for its durable advantage: billions of users across Search, YouTube, and other services that help sustain its advertising and AI investments.

John Ballard has positions in Amazon and Space Exploration Technologies. The Motley Fool has positions in and recommends Alphabet, Amazon, and Meta Platforms. The Motley Fool has a disclosure policy.