Portolan Capital Management’s Celestica CLS Stock Holding History

Portolan Capital Management’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 Q1	$55.7M	Buy	197,863 +25,588	+15%	+$7.42M	2.97%	3
2025 Q4	$50.9M	Sell	172,275 -79,281	-32%	-$23.9M	2.73%	4
2025 Q3	$62M	Sell	251,556 -298,037	-54%	-$60.1M	3.35%	5
2025 Q2	$85.8M	Buy	549,593 +156,673	+40%	+$16.7M	5.38%	1
2025 Q1	$31M	Sell	392,920 -234,021	-37%	-$24.8M	2.35%	9
2024 Q4	$57.9M	Sell	626,941 -104,005	-14%	-$8.14M	3.89%	2
2024 Q3	$37.4M	Sell	730,946 -22,170	-3%	-$1.15M	2.71%	5
2024 Q2	$43.2M	Sell	753,116 -247,373	-25%	-$12.5M	3.56%	2
2024 Q1	$45M	Sell	1,000,489 -233,535	-19%	-$8.86M	3.42%	2
2023 Q4	$36.1M	Sell	1,234,024 -176,352	-13%	-$4.69M	3.16%	3
2023 Q3	$34.6M	Buy	1,410,376 +989,186	+235%	+$20.2M	3.23%	4
2023 Q2	$6.11M	Buy	+421,190	New	+$5.21M	0.54%	55

Other funds holding CLS

Fidelity Investments Boston, Massachusetts $1.9T AUM 41.92% 1-Year Est. Return

JP Morgan Chase New York $1.56T AUM 27.86% 1-Year Est. Return

VCM

Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM

Franklin Resources San Mateo, California $408B AUM 30.18% 1-Year Est. Return

Jane Street New York $777B AUM 61.18% 1-Year Est. Return

Arrowstreet Capital Boston, Massachusetts $185B AUM 39.58% 1-Year Est. Return

CIBC World Market Toronto, Ontario, Canada $61.3B AUM 39.33% 1-Year Est. Return

Connor, Clark & Lunn Investment Management (CC&L) Vancouver, British Columbia, Canada $43.4B AUM 51.29% 1-Year Est. Return

Viking Global Investors Stamford, Connecticut $35.7B AUM 21.3% 1-Year Est. Return

WRCM

Whale Rock Capital Management Boston, Massachusetts $7.74B AUM 180.85% 1-Year Est. Return

Portolan Capital Management's CLS Position: Q1 2026 in Review

Portolan Capital Management increased its Celestica (CLS) stake by 15% in Q1 2026, buying an estimated $7.42M and bringing the position to 197,863 shares worth $55.7M. The position accounts for 2.97% of the portfolio, ranked #3.

Portolan Capital Management first reported a position in CLS in Q2 2023 and has held it in 12 quarters since. The position peaked at $85.8M in Q2 2025. 773 funds tracked by Wall St. Rank hold CLS as of Q1 2026.

Portolan Capital Management held 197,863 shares of Celestica worth $55.7M as of Q1 2026.
Portolan Capital Management bought 25,588 Celestica shares in Q1 2026, an estimated $7.42M.
Celestica made up 2.97% of Portolan Capital Management's portfolio in Q1 2026, its #3 holding.
Portolan Capital Management first reported a position in Celestica in Q2 2023 and has held it in 12 quarters since.
Portolan Capital Management's Celestica position peaked at $85.8M in Q2 2025.
773 funds tracked by Wall St. Rank held Celestica as of Q1 2026.

Based on Portolan Capital Management's 13F filing for Q1 2026, filed 15 May 2026.