Toronto, May 25, 2026, 12:01 EDT
Celestica Inc.’s shares in Toronto moved higher Monday, giving some action on the AI-hardware theme as the NYSE listing paused for the U.S. Memorial Day break. CLS was at C$521.27, up 2.61%, at 11:12 a.m. ET, according to Google Finance, after getting as high as C$521.88. Shares stayed under the 52-week high of C$591.25.
The timing was key. NYSE and Nasdaq both list Memorial Day, May 25, as closed for 2026, but the TSX’s Canadian holiday calendar puts Victoria Day on May 18 and lists Memorial Day just as a U.S. holiday with special U.S.-dollar settlement. Toronto ended up as the only live market for Celestica shares.
S&P/TSX Composite pushed to a record in late morning, Reuters said, with the index up 0.7% at 34,778.98 at 10:21 a.m. ET. Materials names took the lead while oil backed off on new optimism around U.S.-Iran talks. Brian Madden, chief investment officer at First Avenue Investment Counsel, said “repeated false hopes” had come up before and he was “not 100% convinced” a deal is close. Reuters
Celestica shares jumped with no new news from the company over the weekend. The latest on its investor-relations feed was a May 19 release about director elections. Before that, updates came May 13 on Fort Worth operations and April 29 on an AI-scale networking product.
Traders stuck to the main theme of demand for AI data-center infrastructure. Celestica posted first-quarter revenue at $4.05 billion, up 53% from a year ago, with adjusted EPS of $2.16. The adjusted, or non-GAAP, numbers leave out costs Celestica doesn’t count as core. CEO Rob Mionis said it was a “strong first quarter” and cited “accelerating growth” in CCS customers. Celestica now sees 2026 revenue hitting $19.0 billion, with adjusted EPS forecast up to $10.15. Celestica Inc.
CCS, or Connectivity & Cloud Solutions, is still the main story. That unit, covering communications, servers, and storage, saw revenue jump 76% to $3.24 billion for the quarter. Hardware Platform Solutions was also up, with revenue climbing 63% to around $1.7 billion. Celestica also announced it has a co-packaged optics (CPO) Ethernet switch program lined up for a hyperscaler customer, with production set to begin ramping in 2027.
Tech stocks led moves on the TSX last week, which finished Friday at its highest close since March 2 after rising 1.9% over five sessions, Reuters said. “The market focus has shifted more toward what’s happening in the tech world,” Allan Small, senior investment advisor of the Allan Small Financial Group with iA Private Wealth, told Reuters. Reuters
Nvidia’s May 20 results fed into the story. The chipmaker posted record first-quarter revenue of $81.6 billion, up 85% from last year. That’s one sign the AI buildout is still driving money into the hardware and networking supply chain. Celestica isn’t Nvidia, but is often seen as a more focused play on manufacturing and networking for that trend.
Rivalry is tight in the group. Celestica in its annual report names Flex, Jabil, Benchmark Electronics, Hon Hai, Plexus and Sanmina as key EMS competitors. But U.S.-listed rivals had nothing moving in regular trading Monday since U.S. markets were closed. That left Canadian-traded CLS more exposed than on a typical day.
But this trade cuts both ways. Celestica’s own risk warnings mention issues like shifts in customer capacity plans, customer concentration, supply bottlenecks, slow program rollouts, tariffs, trade restrictions, and utility limits in the data center space. Any pause in hyperscaler budgets, or delays in 800G and 1.6T networking, would undercut the same argument that’s driving shares now.
U.S. trading picks up again on Tuesday, so the NYSE line gets a chance to react to Toronto’s shift. Bank earnings, which Reuters reported kick off Wednesday, could guide the Canadian tape this week. Celestica backers will be looking to see if AI infrastructure demand still backs up Celestica’s higher 2026 guidance.
