William Blair & Company’s Celestica CLS Stock Holding History

William Blair & Company’s Portfolio CLS Stock Details CLS Fund Activity

Bought

Maintained

Sold

Quarter	Market Value	Status	Shares	Change in Stake	Trade Value	Portfolio Weight	Portfolio Position
2026 Q2	$1.68M	Buy	4,601 +1,533	+50%	+$575K	﹤0.01%	823
2026 Q1	$864K	Buy	3,068 +1,224	+66%	+$355K	﹤0.01%	983
2025 Q4	$545K	Buy	1,844 +125	+7%	+$37.7K	﹤0.01%	1114
2025 Q3	$423K	Buy	+1,719	New	+$347K	﹤0.01%	1176
2015 Q3	–	Sell	-206,878	Closed	-$2.41M	–	1424
2015 Q2	$2.41M	Hold	206,878	–	–	﹤0.01%	1281
2015 Q1	$2.3M	Buy	+206,878	New	+$2.39M	﹤0.01%	1273

Other funds holding CLS

Fidelity Investments Boston, Massachusetts $2.3T AUM 54.33% 1-Year Est. Return

JP Morgan Chase New York $1.81T AUM 41.13% 1-Year Est. Return

Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM

Franklin Resources San Mateo, California $462B AUM 39.16% 1-Year Est. Return

Jane Street New York $1.21T AUM 78.12% 1-Year Est. Return

CIBC World Market Toronto, Ontario, Canada $62.3B AUM 44.64% 1-Year Est. Return

D.E. Shaw & Co New York $210B AUM 57.28% 1-Year Est. Return

Connor, Clark & Lunn Investment Management (CC&L) Vancouver, British Columbia, Canada $52.8B AUM 58.98% 1-Year Est. Return

VARA

Value Aligned Research Advisors Princeton, New Jersey $40.1B AUM 376.19% 1-Year Est. Return

Arrowstreet Capital Boston, Massachusetts $225B AUM 49.49% 1-Year Est. Return

William Blair & Company's CLS Position: Q2 2026 in Review

William Blair & Company increased its Celestica (CLS) stake by 50% in Q2 2026, buying an estimated $575K and bringing the position to 4,601 shares worth $1.68M. The position accounts for ﹤0.01% of the portfolio, ranked #823.

William Blair & Company first reported a position in CLS in Q1 2015 and has held it in 6 quarters since. The position peaked at $2.41M in Q2 2015. 878 funds tracked by Wall St. Rank hold CLS as of Q2 2026.

William Blair & Company held 4,601 shares of Celestica worth $1.68M as of Q2 2026.
William Blair & Company bought 1,533 Celestica shares in Q2 2026, an estimated $575K.
Celestica made up ﹤0.01% of William Blair & Company's portfolio in Q2 2026, its #823 holding.
William Blair & Company first reported a position in Celestica in Q1 2015 and has held it in 6 quarters since.
William Blair & Company's Celestica position peaked at $2.41M in Q2 2015.
878 funds tracked by Wall St. Rank held Celestica as of Q2 2026.

Based on William Blair & Company's 13F filing for Q2 2026, filed 11 Aug 2026.