Harbor Capital Advisors’s Ciena CIEN Stock Holding History

Harbor Capital Advisors’s Portfolio CIEN Stock Details CIEN Fund Activity

Bought

Maintained

Sold

Quarter	Market Value	Status	Shares	Change in Stake	Trade Value	Portfolio Weight	Portfolio Position
2026 Q1	$1.54M	Buy	+3,962	New	+$1.21M	0.12%	243
2025 Q3	–	Sell	-597	Closed	-$49K	–	1367
2025 Q2	$49K	Buy	597 +42	+8%	+$3.01K	﹤0.01%	701
2025 Q1	$34K	Sell	555 -2,135	-79%	-$169K	﹤0.01%	750
2024 Q4	$228K	Sell	2,690 -39,177	-94%	-$2.81M	0.01%	642
2024 Q3	$2.58M	Buy	41,867 +38,402	+1,108%	+$2.02M	0.11%	250
2024 Q2	$167K	Buy	3,465 +514	+17%	+$24.4K	0.01%	666
2024 Q1	$146K	Buy	+2,951	New	+$156K	0.02%	678
2023 Q1	–	Sell	-1,797	Closed	-$91.6K	–	248
2022 Q4	$91.6K	Buy	1,797 +101	+6%	+$4.57K	0.09%	87
2022 Q3	$69K	Sell	1,696 -1,254	-43%	-$60.3K	0.06%	144
2022 Q2	$135K	Buy	2,950 +440	+18%	+$22.8K	0.1%	140
2022 Q1	$152K	Buy	+2,510	New	+$164K	0.07%	144

Other funds holding CIEN

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

BlackRock New York $5.72T AUM 30.48% 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

VPM

Vanguard Portfolio Management Malvern, Pennsylvania $1.91T AUM

State Street Boston, Massachusetts $2.9T AUM 29.55% 1-Year Est. Return

T. Rowe Price Associates Baltimore, Maryland $865B AUM 30.76% 1-Year Est. Return

Geode Capital Management Boston, Massachusetts $1.61T AUM 30.72% 1-Year Est. Return

Capital Research Global Investors Los Angeles, California $645B AUM 30.41% 1-Year Est. Return

Bank of America Charlotte, North Carolina $1.37T AUM 24.88% 1-Year Est. Return

Harbor Capital Advisors's CIEN Position: Q1 2026 in Review

Harbor Capital Advisors opened a new position in Ciena (CIEN) in Q1 2026: 3,962 shares worth $1.54M. The stake represents 0.12% of the portfolio and ranks #243 among its holdings. This is a return to the name: Harbor Capital Advisors previously reported a position in CIEN as recently as Q2 2025.

Harbor Capital Advisors first reported a position in CIEN in Q1 2022 and has held it in 11 quarters since. The position peaked at $2.58M in Q3 2024. 1,080 funds tracked by Wall St. Rank hold CIEN as of Q1 2026.

Harbor Capital Advisors held 3,962 shares of Ciena worth $1.54M as of Q1 2026.
Ciena was a new Harbor Capital Advisors position in Q1 2026.
Ciena made up 0.12% of Harbor Capital Advisors's portfolio in Q1 2026, its #243 holding.
Harbor Capital Advisors first reported a position in Ciena in Q1 2022 and has held it in 11 quarters since.
Harbor Capital Advisors's Ciena position peaked at $2.58M in Q3 2024.
1,080 funds tracked by Wall St. Rank held Ciena as of Q1 2026.

Based on Harbor Capital Advisors's 13F filing for Q1 2026, filed 28 Apr 2026.