Who are Celestica Inc.'s major customers?

Celestica Inc. (CLS) key customers include: HYPERSCALER-CUSTOMERS, ONE-OF-OUR-HYPERSCALER-CUSTOMERS, THREE-CUSTOMERS-ALL-IN-OUR-CCS-SEGMENT, TOP-10-CUSTOMERS, Carpenter Technology Corporation. View the full customer network at chainsifter.com/chain/CLS.

What sector is Celestica Inc. in?

Celestica Inc. (CLS) operates in the general sector. ChainSifter tracks its verified supply chain relationships including suppliers, customers, and strategic partners.

Celestica Inc. (CLS): 6 Verified Supply Chain Relationships

0Suppliers

5Customers

1Debt Items

20Related Chains

Source-Backed Evidence Depth

Celestica Inc. (CLS) is shown with relationship data already present in ChainSifter's database. Counts below come from stored supply-chain records and filing/source URLs where available; missing source URLs are not filled in or estimated.

7Total relationships

1Distinct source URLs

6High confidence

0.853Average confidence

2026-10-28Latest database update

ChainSifter does not infer unreported suppliers, customers, ownership, acquisitions, debt exposure, revenue dependency, or future supply-chain events on this public page.

Celestica Inc. Suppliers

No suppliers on recordCelestica Inc. does not appear to disclose named supplier relationships in its verified regulatory filings, or upstream suppliers have not yet been identified. Our system processes new filings continuously.

Celestica Inc. Customers

Ticker	Name	Confidence	Evidence
HYPERSCALER-CUSTOMERS	HYPERSCALER-CUSTOMERS	90%	Increases in HPS revenue in Q1 2026 compared to Q1 2025 was driven by strong demand of our networking switch programs with hyperscaler customers.
ONE-OF-OUR-HYPERSCALER-CUSTOMERS	ONE-OF-OUR-HYPERSCALER-CUSTOMERS	90%	Enterprise end market revenue increased $416.7 million (101%) in Q1 2026 compared to Q1 2025, driven by the ramp-up of an AI/ML compute program with one of our hyperscaler customers.
THREE-CUSTOMERS-ALL-IN-OUR-CCS-SEGMENT	THREE-CUSTOMERS-ALL-IN-OUR-CCS-SEGMENT	90%	Three customers (all in our CCS segment) individually represented 10% or more of total revenue in Q1 2026 (35%, 15% and 15%).
TOP-10-CUSTOMERS	TOP-10-CUSTOMERS	85%	In the aggregate, our top 10 customers represented 84% of total revenue for Q1 2026 (Q1 2025 — 78%).
CRS	Carpenter Technology Corporation	62%	Reciprocal relationship from CRS graph: Reciprocal relationship from CLS graph: Reciprocal relationship from CRS graph: Reciprocal relationship from CLS graph: Reciprocal relationship from CRS graph:…

Celestica Inc. Debt Obligations

Instrument	Description	Confidence	Evidence
CLS-DEBT	Debt stack $941.7M	90%	Market cache reports total debt of $941.7M.

Celestica Inc. Acquisitions

No acquisitions on recordNo completed or pending acquisitions found in our database for Celestica Inc..

Celestica Inc. Ownership

Holder	Name	Confidence	Evidence
CLS-OWNER-FMR-LLC	FMR LLC	90%	13F overlay lists FMR LLC as top holder; 781 tracked holders.

Celestica Inc. Extended Supply Chain Network

Ticker	Name	Chain Index	Hops	Relationship Types
CRS	Carpenter Technology Corporation	100.00	1	['customer']
BLSH	Bullish	50.00	2
FIHL	Pelagos Insurance Capital Limited	50.00	2
BCO	The Brink's Company	50.00	2
CPS	Cooper-Standard Holdings Inc.	50.00	2
CMC	Commercial Metals Company	50.00	2
BRBI	BRBI BR Partners S.A.	50.00	2
CART	Maplebear Inc.	50.00	2
GANX	Gain Therapeutics, Inc.	50.00	2
GDYN	Grid Dynamics Holdings, Inc.	50.00	2
BRCC	BRC Inc.	50.00	2
ACVA	ACV Auctions Inc.	50.00	2
HXHX	Haoxin Holdings Limited	50.00	2
BHB	Bar Harbor Bankshares	50.00	2
ALX	Alexander's, Inc.	50.00	2
DY	Dycom Industries, Inc.	50.00	2
CORZ	Core Scientific, Inc.	50.00	2
FRSH	Freshworks Inc.	50.00	2
GVA	Granite Construction Incorporated	50.00	2
BLMN	Bloomin' Brands, Inc.	50.00	2

Celestica Inc. Supply Chain