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ROCKWOOD RESEARCH · A CORPORATE FILINGS WEBSITE|STRAIGHT FROM THE SOURCE · SEC EDGAR|SPONSOREDYour message on this tape — bid on the Rockwood Ad Exchange · Rockwood Ad Exchange|

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CELESTICA INC

Printed Circuit Boards · SIC 3672CIK 1030894Held by 10 tracked managersEDGAR filings ↗10-K/10-Q ↗

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12 of 12 reported changes in each tracked manager’s latest 13F vs its prior quarter (Q2 2026). Every change is listed — no cap.

ManagerActionShare change% chgEnding % of 13F bookPosition size

WCM Investment Management

Q2 2026Position history →

Add+68,025+25.7%0.21%$114.3M

Maverick Capital

Q2 2026Position history →

Add+1,209+10.4%0.04%$4.7M

Tortoise Capital Advisors

Q2 2026Position history →

Add+2,736+84.4%0.02%$2.2M

Whale Rock Capital Management

Q2 2026Position history →

Trim(41,771)(2.8%)4.3%$538.6M

SRS Investment Management

Q2 2026Position history →

Trim(104,813)(10.3%)3.1%$332.7M

Capital World Investors

Q2 2026Position history →

Trim(34,897)(5.8%)0.02%$206.2M

Bridgewater Associates

Q2 2026Position history →

Trim(194,932)(37.1%)0.49%$120.6M

Renaissance Technologies

Q2 2026Position history →

Trim(23,020)(9.4%)0.11%$80.9M

Holocene Advisors

Q2 2026Position history →

Trim(416,704)(92.9%)0.03%$11.7M

Causeway Capital Management

Q2 2026Position history →

Trim(5,211)(21.0%)0.08%$7.1M

Viking Global Investors

Q2 2026Position history →

Exit(1,654,989)(100.0%)exited$466.2M

Duquesne Family Office

Q2 2026Position history →

Exit(33,275)(100.0%)exited$9.4M

Changes compare each manager’s latest 13F with its prior quarter for the same CUSIP. “First observation” rows have no earlier stored filing to compare and are never counted as buys; “Split?” rows moved by a near-whole factor at an unchanged value and are treated as stock splits, not trades. Ending weight is the position after the change, not the size of the change.