Market Context
What Happened
Why It Matters
Sector Breakdown
Risks to Watch
What to Watch Next
Final Outlook

Market Context

The Canadian growth equity space is navigating one of the more confusing investor environments in recent memory — one where strong earnings results do not necessarily translate into stock price gains. The first quarter of 2026 has seen AI-linked technology companies deliver exceptional numbers while simultaneously suffering sharp multiple contraction, as investors grapple with slowing growth narratives, rising geopolitical risk, and a macro backdrop that keeps bond yields elevated.

For context, the S&P/TSX Composite has declined in each of the past four sessions, with the bulk of the damage concentrated in technology and mining. Broader market sentiment has been weighed down by a Wall Street Journal report suggesting OpenAI missed key internal revenue and user targets, which triggered a wide reset in AI-related valuations across both U.S. and Canadian markets. Canadian growth stocks with AI exposure have not been immune.

This is the backdrop against which Canada’s flagship technology names are reporting Q1 earnings during an unusually active week on the calendar.

What Happened

The week’s most striking story in the growth space belongs to Celestica (TSX: CLS), which plunged nearly 15% on Tuesday to $493.22 per share — the single worst performance on the TSX that day — despite reporting arguably the strongest quarterly results in the company’s recent history. Celestica’s first-quarter revenue reached $4.05 billion, a 53% year-over-year increase. Adjusted earnings per share came in at US$2.16, up 80% from a year ago and above guidance. The company raised its full-year 2026 revenue outlook from US$17 billion to US$19 billion, also lifting its full-year adjusted EPS outlook to US$10.15 from US$8.75 — a 68% growth target.

The CCS (Connectivity & Cloud Solutions) segment drove the bulk of the growth, with revenue rising 76% year-over-year to $3.24 billion. The HPS (High Performance Systems) business — Celestica’s AI and data centre hardware arm — grew 63% to $1.7 billion. By any conventional earnings measure, these are extraordinary results.

And yet the stock fell. The reasons are partly sector-wide and partly specific to Celestica’s valuation after a prolonged rally.

Meanwhile, CGI Inc. (TSX: GIB.A) also reported Q2 fiscal 2026 earnings today. Revenue came in at CA$4.16 billion — a miss relative to analyst estimates of CA$4.24 billion, though EPS of CA$2.27 narrowly beat consensus of CA$2.26. The stock dropped more than 13% to around CA$87.34 on the session, touching its 52-week low. CGI’s backlog remains substantial at $31.5 billion, or roughly 1.9 times annual revenue, which may offer some comfort to longer-term holders watching the near-term price action.

Why It Matters

When Fundamentals and Sentiment Diverge

The Celestica situation is a case study in the limits of earnings-driven investing during high-valuation cycles. The company’s fundamentals are, by most measures, exceptional. But CLS had rallied sharply ahead of the results, and with broader AI sentiment deteriorating — driven in part by the OpenAI story — profit-taking overwhelmed positive earnings momentum. This pattern has played out repeatedly in AI-adjacent technology names this cycle.

The Backlog Signal

For CGI, the Q2 revenue miss is notable but should be read alongside the $31.5 billion backlog figure. IT services businesses with long-duration contract pipelines are inherently less volatile than product companies, and the backlog suggests that CGI’s forward revenue trajectory remains intact, even if near-term execution has disappointed.

Sector Breakdown

Celestica’s growth is directly tied to the infrastructure buildout underpinning the AI industry. Its data centre switching and compute platforms have become embedded with major hyperscalers, and management has indicated strong visibility into next-generation programs thanks to long silicon lead times. A recent win in co-packaged optics (CPO) Ethernet switching was highlighted on the earnings call as significant, representing a move up the value chain with better margin characteristics.

CGI operates on a very different model — a globally diversified IT consulting and outsourcing business with operations in 40-plus countries and 94,000 employees. Its lower beta (0.35) reflects the defensive nature of its revenue streams, making Wednesday’s sharp selloff feel somewhat disproportionate to the magnitude of the revenue miss. Wall Street analysts, per Zacks, still see a roughly 34% upside potential in the stock from current levels.

Constellation Software (TSX: CSU), while not reporting this week, was also moderately lower on Wednesday. Investors should watch whether sentiment broadly improves in the Canadian software and technology space once the rate decision noise clears.

Also Read: Dividend paying stocks Canada

Risks to Watch

The most significant risk for Canadian growth stocks right now is multiple compression in a higher-for-longer rate environment. Both the BoC and the Fed are making rate decisions today, and while no changes are widely expected, any hawkish language could push long-duration growth stock valuations lower. Additionally, supply chain constraints — Celestica specifically cited component shortages in custom silicon and memory — could dampen near-term execution even if the long-term demand picture is strong.

For CGI, the risk is a deceleration in new bookings, particularly in government IT contracts, where budget pressures are intensifying in Canada and Europe.

What to Watch Next

Celestica’s Q2 2026 guidance range of $4.15–$4.45 billion in revenue and US$2.14–$2.34 in adjusted EPS will set expectations for the next quarter. On the macro side, today’s BoC rate announcement and any accompanying language on the growth outlook will matter. For CGI, investors should watch whether the stock stabilises near its 52-week low — analysts currently see significant mean-reversion potential.

Also Read: Best long term Canadian stocks

Final Outlook

Strong earnings failed to protect Canadian growth stocks from a risk-off unwind this week, raising questions about how much AI enthusiasm is already priced into leading names. Celestica’s operational results are genuinely impressive, and the CGI selloff looks overdone relative to the modest scale of its miss. However, sector sentiment is fragile, and macro headwinds are real.

Investors with a longer time horizon may view current prices in both CLS and GIB.A as more attractive entry points than they were last week. The underlying businesses remain competitive and growing.