Celestica (CLS) Stock; Gains on TSX as U.S. Market Closure Shifts Focus to Canada

TLDRs;

• Celestica rose on the TSX as U.S. markets closed for Memorial Day, shifting focus to Canadian trading.
• AI infrastructure demand continues to support sentiment despite absence of fresh company-specific news.
• Strong revenue growth and raised guidance reinforce long-term bullish outlook for Celestica shares.
• Broader TSX tech strength and Nvidia-driven AI optimism further boosted investor interest in CLS.

Celestica Inc. (TSX: CLS) moved higher on Monday as Canadian markets became the primary venue for price discovery amid the closure of U.S. exchanges for the Memorial Day holiday. With the New York Stock Exchange and Nasdaq shut, trading activity in North American equities was significantly thinned, placing greater attention on the Toronto Stock Exchange.

CLS shares climbed 2.61% to C$521.27 by late morning, briefly touching C$521.88 before easing slightly. The move kept the stock below its 52-week high of C$591.25 but reinforced its position as one of the more closely watched technology-linked industrial names on the TSX.

AI infrastructure theme supports momentum

The stock’s upward move came without any fresh corporate announcements over the weekend, suggesting that broader sentiment rather than company-specific catalysts was driving gains.

Investors continued to lean into the artificial intelligence infrastructure narrative, which has become a dominant theme across semiconductor, networking, and electronics manufacturing services (EMS) sectors. Celestica remains positioned within this trend through its Connectivity & Cloud Solutions (CCS) division, which serves data center and communications customers.

Celestica Inc., CLS

The lack of U.S. trading also amplified relative movement in TSX-listed technology names, as investors adjusted positions in a market temporarily free from Wall Street direction.

Strong fundamentals underpin sentiment

Recent financial results continue to provide a supportive backdrop for the stock. Celestica reported first-quarter revenue of $4.05 billion, marking a 53% year-over-year increase, alongside adjusted earnings per share of $2.16. Management described the quarter as a “strong performance,” pointing to accelerating demand from cloud and hyperscaler customers.

The company also raised its outlook, projecting 2026 revenue of approximately $19.0 billion and adjusted EPS reaching as high as $10.15. Growth has been especially strong in its CCS segment, where revenue surged 76% to $3.24 billion, driven by server, storage, and networking demand.

Meanwhile, its Hardware Platform Solutions unit posted a 63% increase in revenue, highlighting broad-based strength across product categories tied to AI infrastructure expansion.

TSX strength and macro backdrop add support

Broader market conditions also contributed to Celestica’s gains. The S&P/TSX Composite Index reached record levels intraday, rising 0.7% as materials stocks led advances and energy softened on geopolitical speculation regarding U.S.-Iran negotiations.

Analysts noted that investor attention has increasingly rotated toward technology and AI-linked equities within the Canadian market. This shift has benefited names like Celestica, which is often viewed as a leveraged play on global data center and cloud infrastructure spending.

At the same time, strong results from Nvidia earlier in the month added momentum to the AI supply chain narrative, reinforcing expectations that demand for advanced computing hardware remains robust across the industry.

Competitive landscape and risks remain in view

Despite positive momentum, Celestica operates in a highly competitive EMS sector that includes global players such as Jabil, Flex, Hon Hai, Plexus, Sanmina, and Benchmark Electronics. Competition for hyperscaler contracts remains intense, with pricing pressure and program timing often influencing margins and revenue visibility.

The company also faces structural risks tied to customer concentration and shifting capital expenditure cycles among large cloud providers. Supply chain bottlenecks, tariff changes, and delays in next-generation networking technologies such as 800G and 1.6T systems could also impact execution timelines.

For now, Celestica remains firmly anchored in the AI infrastructure trade, with holiday-distorted trading conditions temporarily amplifying its move on the Toronto Stock Exchange.

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