What if the best stock to own before 2027 isn't the one making the biggest headlines, but the one whose business can keep growing long after the excitement fades? 📈 Meta (META), MercadoLibre (MELI), Nu Holdings (NU), and Nebius (NBIS) each offer a different path to long-term growth. Meta is betting that AI can make its already powerful advertising ecosystem even more valuable. MercadoLibre is expanding its reach across Latin American commerce and payments, while Nu Holdings is working to turn a growing digital banking customer base into deeper, more profitable relationships.

Nebius offers exposure to the infrastructure behind AI development, but its ambitious expansion also brings substantial capital requirements and execution risks. These are not four interchangeable growth stocks—and owning all of them doesn't automatically create a diversified portfolio. Their valuations, cash-generation potential, competitive positions, and exposure to economic shifts deserve a closer look before you commit your money. The key is to separate a compelling business opportunity from a stock price that already assumes success.

🔎 Which of these four companies has an established business to support its growth—and which must deliver ambitious future results to justify its valuation?

Explore the catalysts, financial risks, and valuation trade-offs that could shape their long-term potential, plus why buying before 2027 matters less than paying a sensible price and knowing what could go wrong.

Picture putting aside $500 a month for $DELL ( ▼ 11.27% ) over five years and investing that fixed amount on a regular schedule—dollar-cost averaging. In this example the purchases land on the first trading day on or after the 9th of each month from October 2021 through September 2026: 60 buys totaling $30,000.

Close to close, DELL went from $52.55 on Oct 13, 2021 to $572.47 on Oct 13, 2026. That is a price gain of about 989%, or roughly 61% a year compounded (the constant annual rate that produces the same total return). At the Oct 13, 2026 close, the 60 buys ($30,000 in total) would have been worth about $230,500, roughly 7.7 times the money invested. A one-time $10,000 purchase on Oct 13, 2021 would have grown to about $108,900. These figures are price only (excluding dividends), ignore fees and taxes, and are illustrations, not forecasts.

The highest close of the past 52 weeks was a record $588.40 on Sep 17, 2026, so the Oct 13, 2026 close sat about 2.7% below it. The 52-week closing low was $111.07 on Jan 20, 2026, and the five-year closing low was $33.77 on Oct 12, 2022. At about +989%, the gain sits just below the +1,000% mark, so ordinary trading days can still move the headline percentage.

Caution: past rates of climb rarely persist. DELL’s results for the quarter ended July 31, 2026 (reported Sep 1, 2026) showed record revenue of $47.0 billion (up 58%) and record non-GAAP diluted EPS of $7.04 (up 203%), with full-year guidance raised to $192 billion in revenue and $25.50 in non-GAAP EPS. The stock jumped after the report and closed within about 3% of its record on Oct 13, 2026, yet the gap between strong operating numbers and future price moves can still widen or narrow quickly.

The stock market can make it tempting to chase whatever is rising fastest. In 2026, semiconductor and artificial intelligence stocks have delivered substantial gains, while several established technology companies have lagged behind. But for investors trying to build wealth over the next five, ten, or twenty years, the more important question is not which stock has performed best recently. It is which businesses can continue growing, turn that growth into profits, and justify their valuations over time.

As the final quarter of 2026 begins, four companies stand out for different reasons: Meta Platforms (META), MercadoLibre (MELI), Nu Holdings (NU), and Nebius Group (NBIS). Each offers exposure to a different opportunity, from monetizing a massive digital audience to expanding financial services across emerging markets and supplying the infrastructure behind AI development.

However, these stocks should not be treated as interchangeable opportunities. Some already operate profitable businesses with established customer bases, while another is making enormous investments to capture a rapidly developing market. Understanding those differences matters more than simply buying four names because they appear promising before 2027.

For an investor with limited time, the objective is straightforward: identify what could drive each company forward, understand what could go wrong, and decide whether the potential return justifies the risk.

Meta has a valuable advantage that many AI-focused companies would struggle to replicate: it already owns a collection of widely used digital platforms. Facebook, Instagram, WhatsApp, and Messenger give the company access to enormous audiences, while its advertising business provides an established way to monetize that reach.

That existing business is central to the investment case. Meta does not need to build an audience from scratch before generating revenue from its AI investments. It can introduce new features, improve advertising tools, strengthen recommendations, and encourage users to spend more time within its ecosystem. If those improvements translate into better engagement and advertising performance, AI spending could eventually reinforce an already substantial revenue base.

The company has also continued investing heavily in AI infrastructure, models, computing capacity, and talent. These investments create an important tension for shareholders: Meta may be building capabilities that support years of future growth, but the money spent today can pressure free cash flow before the benefits become clear.

That distinction matters when evaluating the stock. Higher capital expenditure is not automatically a reason to avoid a company, just as a promising AI strategy is not automatically a reason to buy it. The key is whether the resulting products and services generate enough additional economic value to justify the cost.

Meta's potential extends beyond improving its existing advertising operation. More capable AI models could support assistants, business tools, developer services, and other products that attract new users or create additional ways to earn revenue. Its distribution network is an important advantage because a successful product can potentially reach a huge audience without requiring Meta to establish an entirely new consumer platform.

Nevertheless, future monetization should be treated as an opportunity rather than a certainty. The company must demonstrate that its AI investments can produce durable commercial results, especially as competitors continue developing their own models and services. Spending heavily while waiting for those results can leave investors exposed if development takes longer than expected.

Valuation also deserves attention. Recent estimates put Meta at approximately 22.4 times forward earnings and 27.1 times trailing earnings, with a price-to-earnings growth ratio of around 1.1. These estimates change with the share price, earnings forecasts, and reporting period. They suggest that the investment case depends partly on the company sustaining strong growth rather than merely remaining a dominant social media business.

Our thoughts: Meta offers a combination of an established cash-generating business, extensive distribution, and substantial AI ambitions. That combination makes it worth evaluating for a long-term portfolio. The strongest reason to consider META is not the possibility of an immediate stock-price rebound, but the potential for AI to strengthen its existing operations and create additional revenue streams. The risk is that investors may pay for future opportunities that take longer or cost more to realize than expected.

MercadoLibre offers exposure to a different growth story. Often compared with Amazon because of its online marketplace, the company has developed a broader ecosystem spanning commerce, payments, and financial services across Latin America.

That combination matters because shopping and financial transactions can reinforce each other. The marketplace attracts buyers and sellers, while its payment services help facilitate transactions. As more customers use those services, MercadoLibre gains opportunities to deepen engagement, expand its financial products, and increase the value it provides to merchants.

Its payments business is particularly important. Mercado Pago allows the company to participate in transactions beyond purchases made directly through its marketplace. This gives MercadoLibre a wider potential customer base and creates additional ways to grow its financial-services operation.

The company's latest results show strong operating momentum. In the quarter ended June 30, 2026 (reported Aug 5, 2026), gross merchandise volume (GMV) grew about 44% year over year in US dollars, total payment volume (TPV) grew about 56%, and total payment transactions grew about 43.6%. These figures measure different aspects of the business: GMV tracks the value of merchandise sold through the marketplace, TPV measures payment value processed, and payment transactions count the transactions completed. They should not be added together, but collectively they help illustrate the scale and activity of the company's ecosystem.

The investment question is whether this expansion can continue while the company builds the infrastructure required to support it. MercadoLibre has periodically invested in shipping capabilities, customer acquisition, credit products, and other parts of its business. Those decisions can put pressure on margins in the short term, even when management believes they will strengthen the company over time.

For investors, falling margins require context. Lower profitability can be concerning if it reflects weaker pricing power, rising losses, or deteriorating operating efficiency. However, it can be more acceptable when a company is deliberately investing in areas that have the potential to generate attractive returns later. The important task is to determine whether the investments are producing measurable progress rather than assuming that every expense will eventually pay off.

MercadoLibre's valuation remains a major consideration. Recent estimates put its trailing price-to-earnings ratio at approximately 50.3 and its forward ratio at 43.8. Such multiples leave less room for disappointing results than a lower valuation might. Even a strong company can deliver poor investment returns if its purchase price already assumes years of exceptional growth.

Competition, economic conditions, currency movements, and credit quality also matter across the markets where MercadoLibre operates. Its financial-services expansion introduces risks that differ from those of a conventional online retailer, particularly if customers struggle to repay loans during periods of economic stress.

Our thoughts: MercadoLibre is a business to evaluate for its long-term expansion, not because it looks inexpensive on a conventional earnings multiple. Its marketplace and payment ecosystem gives it several avenues for growth, and the reported transaction data points to meaningful operating activity. The opportunity is attractive if the company can sustain that growth while improving the economics of its investments. The challenge is paying a reasonable price for a business that already commands a premium valuation.

Nu Holdings, the company behind Nubank, represents another way to invest in Latin America's expanding digital economy. Rather than concentrating on online shopping and payments infrastructure, Nu focuses on digital financial services, including banking products and credit.

Its appeal rests on a straightforward business model: attract customers through a convenient, lower-cost digital platform, build relationships with them over time, and introduce additional financial products as their needs evolve.

Traditional banking can involve branch networks, physical infrastructure, and other operating expenses that are difficult to scale efficiently. A digital-first model can reduce some of those costs, potentially allowing a company to serve customers more efficiently. That does not eliminate the costs of compliance, technology, customer support, funding, or credit losses, but it can create a different cost structure from that of established banks.

Two indicators are especially useful when evaluating Nu: monthly active customers and average monthly revenue per active customer. The first indicates whether the platform continues attracting and retaining users. The second helps show whether those relationships are becoming more valuable commercially.

In the quarter ended June 30, 2026 (reported Aug 13, 2026), average monthly revenue per active customer reached approximately $17.10, and total revenue grew about 39% year over year. If customer numbers continue increasing and revenue per customer rises without a corresponding deterioration in costs or credit quality, Nu could expand its business while improving its ability to monetize its existing customer base.

Geographic expansion provides another potential source of growth. Nu has established operations across Latin American markets and has ambitions beyond its existing footprint, including the United States. A successful US operation could open access to a large financial-services market, although the opportunity should not be confused with an established source of material revenue. Entering a new country requires local compliance, customer acquisition, competitive positioning, and time to build scale.

There is also a distinction between reported news and an actual corporate decision. Media reports speculated about a possible acquisition of UK fintech company Monzo, reportedly valued at around £10 billion, which Nu subsequently denied as a current plan. Investors should not build an investment thesis around an unconfirmed acquisition. Nu's existing customer growth, product development, and financial performance are more relevant to assessing its prospects.

Recent estimates value Nu at approximately 21 times trailing earnings and 16 times forward earnings. Those figures may look more moderate than MercadoLibre's, especially given Nu's reported growth rate. However, valuation comparisons between financial-services businesses can be misleading when accounting methods, credit exposure, profitability, and growth expectations differ.

Credit risk is particularly important. Expanding lending can increase revenue, but it can also expose Nu to higher delinquencies and loan losses. Rapid customer growth is not enough if the company must spend substantially more to acquire customers or absorb losses on its credit portfolio. Investors should monitor loan quality, provisions for credit losses, customer retention, and profitability alongside headline revenue growth.

Our thoughts: Nu offers an interesting combination of digital distribution, customer expansion, and opportunities to increase revenue from existing users. Its potential does not depend entirely on entering the United States; continued development in its established markets could already support meaningful growth. However, the investment case requires confidence in management's execution and the company's ability to expand without allowing credit losses or operating costs to undermine profitability.

Nebius is the most speculative company on this list because its investment case depends heavily on future capacity, revenue growth, and execution.

The company operates in AI cloud infrastructure, supplying computing resources and related services needed to develop and run AI applications. As organizations build and deploy more advanced models, they require access to specialized computing capacity, data-center infrastructure, networking, and software. This creates an opportunity for providers that can deliver a complete, reliable service rather than simply offering access to individual GPUs.

Nebius also has a distinctive starting point. Its origins are connected to the technology business formerly known as Yandex, giving it access to experienced engineering and technical talent. That background can be valuable in a field where operating large-scale computing systems requires more than purchasing expensive hardware. Customers need reliable infrastructure, effective software, and predictable performance.

The company is also developing its broader offering through additional services and infrastructure investments. These capabilities could help differentiate Nebius from providers that compete mainly on access to computing hardware. A more complete platform may support stronger customer relationships and better pricing opportunities over time, although the company must prove that these advantages translate into sustainable margins and returns on invested capital.

Large customer agreements are another part of the growth story. Nebius has signed long-term deals with major technology companies, including Microsoft and Meta; the second Meta agreement, announced Mar 16, 2026, is worth up to about $27 billion over five years. Contracts of this scale can provide revenue visibility and support financing for infrastructure expansion. However, investors should distinguish contracted business from revenue already recognized, and should assess the economics of those agreements rather than treating their headline size as guaranteed profit.

Nebius reported revenue of approximately $1.36 billion over the 12 months to June 30, 2026. Management guides to $3.0 billion to $3.4 billion for 2026, and analyst projections reach $12.3 billion for 2027 and nearly $23 billion for 2028. These are forecasts, not completed results. The gap between historical revenue and projected revenue is central to the investment thesis: Nebius is being valued partly on what it may become, not simply on the size of the business it operates today.

That creates both opportunity and risk. If new data-center capacity comes online on schedule, customer demand remains strong, and the company converts its expansion into profitable operations, revenue could grow dramatically. If construction is delayed, financing becomes more expensive, customers postpone deployments, or computing prices fall, the results could fall short of expectations.

The AI infrastructure market is capital-intensive. Nebius must fund data centers, power access, networking, computing equipment, and ongoing operations. Even if demand is strong, spending too aggressively can strain cash flow or require additional financing. Investors therefore need to watch capital expenditure, debt, liquidity, customer concentration, and the timing of capacity deployments rather than focusing only on revenue forecasts.

Its European presence may also provide a useful point of differentiation for customers seeking an AI cloud provider with a substantial European footprint. However, regional positioning alone does not guarantee a competitive advantage; price, reliability, available capacity, security, and service quality still determine whether customers choose to stay.

Its AI cloud business reported an adjusted EBITDA margin of approximately 50% in the quarter ended June 30, 2026. This measure can help investors evaluate operating performance, but it is not the same as net income or free cash flow. Significant infrastructure spending and other cash requirements can remain even when adjusted EBITDA margins appear attractive.

Our thoughts: Nebius offers substantial potential if the AI infrastructure build-out continues and the company executes its expansion successfully. However, it should not be evaluated like an established, mature business. Its projected growth requires large investments, and the stock's valuation can change sharply when expectations shift. For investors considering NBIS, position sizing and tolerance for volatility are essential. A compelling long-term opportunity can still be an unsuitable investment if the price paid assumes nearly everything will go right.

META, MELI, NU, and NBIS all offer exposure to businesses attempting to expand through technology, but the sources of their potential returns differ.

Meta has an established advertising engine that could benefit from AI-driven product improvements. MercadoLibre is expanding a commerce and payments ecosystem across Latin America. Nu is building digital financial relationships that may become more valuable as customers adopt additional products. Nebius is investing heavily to supply the computing infrastructure required by the AI economy.

These differences matter when constructing a portfolio. The first three companies have existing customer relationships and operating businesses that provide a foundation for evaluating their performance, although each still faces meaningful risks. Nebius, by contrast, depends more heavily on delivering rapid future growth and funding the infrastructure needed to support it.

The stocks also should not be mistaken for a diversified portfolio simply because they operate in different industries. All four are exposed to growth expectations, valuation changes, and investor sentiment. Meta and Nebius have direct connections to AI spending, while MercadoLibre and Nu depend partly on economic conditions and consumer or business activity across Latin America. A broad market sell-off or a shift away from expensive growth stocks could pressure several of these holdings simultaneously.

The reported share-price performance of each company is also less important than the business fundamentals behind it. A stock that has fallen may offer a better entry point, but only if its long-term earnings potential remains intact. A stock that has risen sharply may continue performing well, but its valuation could leave investors vulnerable if expectations become too optimistic.

For busy investors, the goal is not to predict the next market winner with perfect accuracy. It is to establish a process that makes investment decisions easier to review and maintain.

Start by identifying the role each stock would play in a portfolio. META could provide exposure to an established digital advertising business with additional AI opportunities. MELI offers participation in Latin American commerce and financial services. NU provides exposure to digital banking and lending, while NBIS represents a higher-risk investment in AI computing infrastructure.

Next, evaluate each company's valuation against realistic operating expectations. Revenue growth alone does not determine shareholder returns. Profit margins, free cash flow, capital requirements, share dilution, debt, and the price paid all influence how much value ultimately reaches shareholders.

It is also worth considering whether an existing position already creates substantial exposure to the same theme. An investor who owns several semiconductor companies, AI infrastructure providers, or other high-growth technology stocks may already be taking considerable risk in a single part of the market. Adding another promising company does not necessarily improve diversification.

Finally, avoid treating the end of the calendar year as an investment deadline. There is no guarantee that buying before January 2027 will produce better results than waiting for a more attractive valuation or stronger evidence of execution. A disciplined investor can build a position gradually, reassess the thesis as new financial results arrive, and keep enough flexibility to respond when the facts change.

The objective is to own businesses that can compound value over time without taking risks that could undermine the broader financial plan. That requires patience when prices fluctuate, but it also requires the willingness to change course when the underlying investment thesis no longer holds.

Meta Platforms, MercadoLibre, Nu Holdings, and Nebius each present a different long-term opportunity as 2026 enters its final months. META combines an established advertising business with the potential for AI-driven monetization. MELI continues building a broad commerce and payments ecosystem. NU is working to turn customer growth into deeper financial relationships. NBIS is pursuing a much more capital-intensive opportunity in AI infrastructure.

None is guaranteed to outperform, and an attractive business is not always an attractive stock at every price. The strongest approach is to understand what must go right for each investment to succeed, determine how much of that success is already reflected in the valuation, and size positions according to the risks involved.

For the overwhelmed and busy investor, that is a more sustainable path than constantly chasing the year's biggest winners. A long-term portfolio does not need to own every exciting company. It needs investments that fit a clear strategy, sensible valuations, and a time horizon long enough for business performance—not short-term market excitement—to do the heavy lifting.

This newsletter is for educational and informational purposes only and is not financial advice. Forecasts and valuation estimates are subject to change. Past performance does not guarantee future results. Always conduct independent research and consider your financial goals, risk tolerance, and investment horizon before making investment decisions.

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Caution: Past pace rarely continues. All figures here are approximate and are shown as examples, using price only (no dividends, fees, or taxes). Past performance is not a forecast; this is education, not advice.

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