The Toronto Stock Exchange delivered one of its strongest years in recent memory, with the S&P/TSX Composite Index climbing more than 21% from its April lows and reaching a record high of 32,000 in December. A combination of easing inflation, stabilizing trade conditions, and surging demand in key sectors such as technology, uranium, and industrial equipment powered the rally. While many Canadian equities participated in the upswing, a handful of blue‑chip names dramatically outperformed the broader market. Below are 5 of the highest‑gaining blue‑chip stocks of 2025, ranked from the largest to smallest percentage gain.
1. Finning International (TSX: FTT) — Over 100% Growth in 2025
Finning International was the single strongest blue‑chip performer of 2025, with its share price rising more than 100% year‑over‑year according to StockAnalysis data, which shows a 100.48% 1‑year gain and a climb from a 52‑week low of $34.59 to a high of $79.68. This surge reflects a powerful combination of mining‑sector strength, record equipment demand, and expanding margins across its global Caterpillar dealership network.
The company benefited from elevated commodity prices and a resurgence in capital spending among mining and energy producers. Finning’s backlog reached record levels, driven by multi‑year equipment replacement cycles and strong demand for power systems. Revenue growth accelerated through 2025, supported by double‑digit increases in product support and equipment sales. With operating leverage improving and cash flow strengthening, Finning delivered one of the most impressive financial performances among TSX industrials.
2. Aritzia (TSX: ATZ) — More Than 100% Growth by Late 2025
Aritzia was one of the top retail performers on the TSX in 2025, with shares more than doubling to about $112 by late December. The company’s U.S. expansion — which accounted for 58% of revenue in fiscal 2025 — played a central role in its breakout performance. Strong demand for its “Everyday Luxury” product line, combined with aggressive store openings and digital growth, fueled exceptional financial results.
Aritzia’s Q4 2025 investor presentation reported 31% revenue growth and accelerating U.S. momentum. Analysts responded by raising price targets, with BMO Capital Markets increasing its target to $130 based on continued earnings strength. With both top‑line and margin expansion, Aritzia became one of the most compelling consumer‑sector growth stories on the TSX.
3. Celestica (TSX: CLS) — 76.6% Gain in Q2 Alone
Celestica was the top‑performing large‑mid‑cap stock on the TSX during Q2 2025, posting a 76.6% gain over the three‑month period. The company’s explosive growth was driven by surging demand for AI‑related electronics manufacturing, as global enterprises expanded their computing and data‑center infrastructure. Celestica’s diversified portfolio — spanning aerospace, defense, communications, and enterprise hardware — positioned it perfectly to capitalize on the AI hardware boom.
Financially, Celestica delivered some of the strongest revenue and margin expansion on the TSX. Analysts highlighted its multi‑year growth trajectory, supported by a robust order pipeline and rising demand for high‑complexity manufacturing. With the stock nearly doubling from early‑year levels, Celestica became one of the most influential contributors to the TSX’s technology‑sector resurgence.
4. Cameco (TSX: CCO) — 67.6% Gain in Q2 2025
Cameco continued its multi‑year resurgence as nuclear energy demand accelerated worldwide. The uranium giant posted a 67.6% gain in Q2 2025, making it one of the top three performers on the entire exchange during the period. With global electricity demand rising and governments seeking stable, low‑carbon baseload power, nuclear energy regained prominence — and uranium prices followed.
Cameco’s disciplined production strategy, long‑term contracting strength, and improving market fundamentals contributed to expanding margins and rising cash flows. Utilities around the world moved aggressively to secure long‑term uranium supply, deepening Cameco’s contract book and providing multi‑year revenue visibility. As one of the world’s largest and most reliable uranium producers, Cameco solidified its position as a top‑tier TSX blue chip in 2025.
5. Galaxy Digital (TSX: GLXY) — 66.4% Gain in Q2 2025
Galaxy Digital delivered a 66.4% gain in Q2 2025, benefiting from a broad recovery in digital asset markets. While not a traditional blue chip in the same mold as banks or railways, Galaxy has grown into one of Canada’s most influential financial‑technology firms, with operations spanning asset management, trading, and blockchain infrastructure.
The rebound in Bitcoin and Ethereum prices throughout 2025 significantly boosted Galaxy’s asset values and trading volumes. Institutional adoption also accelerated, with more Canadian and global investors seeking regulated digital‑asset exposure. Galaxy’s diversified business model allowed it to capture upside across multiple crypto‑related verticals, making it one of the TSX’s most dynamic large‑cap performers.
Conclusion: A Year Dominated by Industrial Strength, AI Manufacturing, and Consumer Momentum
5 of the TSX’s top‑gaining blue‑chip stocks of 2025 reflect the powerful macroeconomic forces shaping Canada’s markets. Finning International led the pack with more than 100% growth, driven by mining‑sector strength and record equipment demand. Celestica, Cameco, and Galaxy Digital each delivered exceptional Q2 gains fueled by AI hardware demand, nuclear energy resurgence, and digital‑asset recovery. Aritzia rounded out the list with triple‑digit annual growth supported by strong U.S. expansion and accelerating revenue.
With the TSX hitting historic highs and Canada’s inflation stabilizing, 2025 proved to be a standout year for investors positioned in these leading names. As the market transitions into 2026, these companies remain well‑positioned to continue generating long‑term value.
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