Celestica Falls Hardest in Its Peer Group Before the Print

CLS dropped 18.2% over the past week, closing at CAD 346.97 on October 26. That move stands well apart from its closest peers: FN fell 13.4% on the week, COHR lost 10.1%, and PLXS declined 5.9%, while KEYS and AVT held within 5%. Celestica is the clear laggard in the group, down 32.8% over the past month.

What makes that underperformance striking is the absence of short-seller conviction behind it. Availability in the CLS lending market is extremely loose, with roughly 62 times as many shares available to borrow as are currently shorted. Borrowing costs have collapsed to 0.25% annually, down more than 73% over the past month. Short interest itself has fallen 16% in the same period to less than 1% of the free float. The slide from peak to current levels was not driven by a build-up of speculative short positions. Sellers were not borrowing shares to express a bearish view.

The insider picture adds a layer of context that has not changed since the prior article. CEO Robert Mionis sold roughly CAD 4.7 million in shares across multiple transactions on September 23, all executed under a pre-arranged 10b5-1 plan. Planned sales are compensation mechanics, not expressions of conviction, but the timing near the highs will draw attention regardless. Director-level activity in the same period was limited to small stock-award vesting and related tax-withholding transactions, carrying no signal.

The fundamental debate centres on concentration risk. Celestica's high-performance switching segment now represents 41% of total revenue, and hyperscaler clients account for 63% of the business overall. The bull case rests on the company's dominant position in high-speed networking hardware, where it controls roughly 41% of high-speed Ethernet port volume. The bear case is that the same concentration leaves earnings unusually sensitive to a single customer cohort's capex cycle. Valuation has re-rated sharply lower: the trailing P/E has compressed by more than 8 points over the past month to 12.8 times, and EV/EBITDA has moved down nearly a full turn to 9.1 times. On forward earnings momentum, the 90-day EPS revision score ranks in the 90th percentile, but the 12-month forward year-on-year EPS growth estimate has turned negative, a tension the print will need to resolve.

The last time CLS reported, in July, the stock barely moved on the day and added 16.5% over the following five sessions. The question this print poses is whether results can justify the re-rating that has already happened, or whether the compression in multiples was pricing in a more cautious forward outlook than the company is prepared to deliver.