Why faster sales left Celestica with a thinner operating margin

Celestica, a Canadian maker of electronics for other companies, booked revenue of USD 5.8bn in Q3 2026, up 82.5% from USD 3.2bn in Q3 2025. Operating profit grew to USD 460m from USD 325m, and net profit reached USD 397m against USD 268m. The margin tells the other half. Operating margin narrowed by 2.3 pp to 7.9%, and net margin fell to 6.8% from 8.4%. Each dollar of sales now leaves less operating profit than a year earlier, even though the total is larger.

In contract manufacturing this is a familiar pattern. Components are largely passed through to customers at little markup, so a surge in volume lifts revenue faster than profit. Growth also needs people, plants and working capital before it pays off. The balance sheet looks sturdy: cash stood at USD 4.0bn against USD 306m a year earlier, and the equity ratio rose to 41.0% from 30.7%. The accounts do not show which customers or products carry the thinner margin. Celestica grew its profit in dollars, not in percentage points.