Growth stocks have a charming habit of looking obvious after they’ve already doubled. The difficult part is deciding whether the business can keep expanding, or whether investors are paying tomorrow’s price for yesterday’s growth.
The best candidates usually combine three things: rising revenue, improving profitability, and a runway that extends beyond one unusually good quarter. Investors also need to ask how much optimism is already embedded in the share price. A wonderful company can still be a rotten purchase at a ridiculous valuation. Today, three companies stand out, although none comes with a tranquillity guarantee.
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A great growth stock
Before you buy, let’s start with the business rather than the chart. Revenue growth should come from repeatable demand, new customers, store expansion, or a larger addressable market. Earnings should eventually grow faster than sales as the company gains scale.
Next comes durability. A temporary product craze is less valuable than a multiyear shift such as artificial-intelligence (AI) infrastructure, international brand expansion, or consumers hunting for better value.
Valuation completes the test. High-growth businesses deserve higher multiples, but not infinite ones. Buying in stages can reduce the sting when an excellent stock decides to behave like a falling piano after earnings.
Position size matters just as much as selection. A growth company can beat every forecast and still fall if expectations were higher. Limiting any one holding, maintaining at least a five-year horizon, and refusing to invest cash needed soon can make the inevitable volatility easier to survive. So, what should investors consider?
Celestica
Celestica (TSX: CLS) has transformed from a fairly sleepy electronics manufacturer into a critical supplier of networking equipment and computing platforms for AI data centres. That connection to hyperscaler spending is producing decidedly unsleepy results.
First-quarter revenue climbed 53% to US$4.1 billion. Adjusted earnings per share (EPS) increased 80% to US$2.16, while the adjusted operating margin expanded to 8%. Management consequently raised its 2026 outlook to US$19 billion in revenue and adjusted earnings to US$10.15 per share.
The catalyst is continued demand for high-speed networking and custom AI infrastructure. Customer concentration, component shortages, or a slowdown in data-centre spending could quickly change the mood. With the stock near 37 times trailing earnings, Celestica is a high-conviction growth idea, not a place for the emergency fund.
Aritzia
Aritzia (TSX: ATZ) proves that a Canadian fashion brand can travel rather well. Its boutiques, digital platform, and portfolio of in-house labels are winning customers across the United States, where the company still has substantial expansion room.
Fiscal 2027 first-quarter revenue surged 43.4% to $951 million. Comparable sales rose 35.1%, while adjusted earnings before interest, taxes, depreciation and amortization (EBITDA) increased 80.5%, and Aritzia’s margin expanded from 16% to 20.1%. Digital revenue grew 55.5%, suggesting new boutiques are strengthening the online business rather than merely moving sales between channels.
Aritzia stock trades around 39 times trailing earnings after a powerful share-price run. Fashion mistakes, poorly chosen locations, or bloated inventory could punish that premium quickly. Continued U.S. expansion and margin improvement nevertheless make it one of Canada’s most compelling consumer-growth stories.
Dollarama
Dollarama (TSX: DOL) offers a steadier flavour of growth. Canadians visit for inexpensive household goods and consumables, giving the retailer dependable traffic in both strong and wobbly economies.
First-quarter fiscal 2027 sales increased 21.4% to $1.9 billion, helped by 5.6% Canadian comparable-store growth. The company ended the quarter with 1,719 Canadian stores, while its Australian business contributed $192.8 million of sales from 410 locations.
Australia and Dollarcity provide long-term expansion opportunities beyond Canada. Integration costs, currency movements, and weaker margins abroad are the immediate risks. Dollarama’s roughly 39 times trailing earnings multiple also leaves little space for a disappointing quarter.
The Foolish bottom line
All together, Celestica offers the greatest AI exposure, Aritzia stock delivers the fastest consumer expansion, and Dollarama supplies more defensive compounding. I would consider buying all three gradually, with smaller allocations to the more volatile Celestica and Aritzia stocks. Growth can build remarkable wealth, provided enthusiasm never evicts discipline from the portfolio.
