Weiss Asset Management’s Ciena CIEN Stock Holding History

Weiss Asset Management’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 Q2	$1.22M	Buy	+2,481	New	+$1.27M	0.01%	402
2026 Q1	–	Sell	-17,740	Closed	-$4.15M	–	558
2025 Q4	$4.15M	Sell	17,740 -6,663	-27%	-$1.29M	0.05%	218
2025 Q3	$3.55M	Sell	24,403 -15,356	-39%	-$1.56M	0.04%	191
2025 Q2	$3.23M	Buy	39,759 +1,869	+5%	+$134K	0.04%	201
2025 Q1	$2.29M	Buy	+37,890	New	+$3M	0.05%	156
2024 Q3	–	Sell	-43,157	Closed	-$2.08M	–	615
2024 Q2	$2.08M	Sell	43,157 -193,301	-82%	-$9.17M	0.08%	145
2024 Q1	$11.7M	Buy	+236,458	New	+$12.5M	0.4%	64

Other funds holding CIEN

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

BlackRock New York $6.73T AUM 46.02% 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

Vanguard Portfolio Management Malvern, Pennsylvania $2.22T AUM

State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return

T. Rowe Price Associates Baltimore, Maryland $999B AUM 46.22% 1-Year Est. Return

Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return

American Century Companies Kansas City, Missouri $226B AUM 44.75% 1-Year Est. Return

Bank of America Charlotte, North Carolina $1.55T AUM 33.47% 1-Year Est. Return

Weiss Asset Management's CIEN Position: Q2 2026 in Review

Weiss Asset Management opened a new position in Ciena (CIEN) in Q2 2026: 2,481 shares worth $1.22M. The stake represents 0.01% of the portfolio and ranks #402 among its holdings. This is a return to the name: Weiss Asset Management previously reported a position in CIEN as recently as Q4 2025.

Weiss Asset Management first reported a position in CIEN in Q1 2024 and has held it in 7 quarters since. The position peaked at $11.7M in Q1 2024. 1,219 funds tracked by Wall St. Rank hold CIEN as of Q2 2026.

Weiss Asset Management held 2,481 shares of Ciena worth $1.22M as of Q2 2026.
Ciena was a new Weiss Asset Management position in Q2 2026.
Ciena made up 0.01% of Weiss Asset Management's portfolio in Q2 2026, its #402 holding.
Weiss Asset Management first reported a position in Ciena in Q1 2024 and has held it in 7 quarters since.
Weiss Asset Management's Ciena position peaked at $11.7M in Q1 2024.
1,219 funds tracked by Wall St. Rank held Ciena as of Q2 2026.

Based on Weiss Asset Management's 13F filing for Q2 2026, filed 14 Aug 2026.