DDD Partners’s Ciena CIEN Stock Holding History

DDD Partners’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 Q3	$13.8M	Buy	39,242 +38,568	+5,722%	+$14.9M	0.79%	45
2026 Q2	$331K	Hold	674	–	–	0.02%	138
2026 Q1	$262K	Buy	+674	New	+$206K	0.02%	120
2025 Q3	–	Sell	-113,135	Closed	-$9.2M	–	130
2025 Q2	$9.2M	Buy	113,135 +2,659	+2%	+$191K	0.99%	37
2025 Q1	$6.68M	Sell	110,476 -13,517	-11%	-$1.07M	0.81%	36
2024 Q4	$10.5M	Sell	123,993 -145,651	-54%	-$10.5M	1.29%	30
2024 Q3	$16.6M	Buy	269,644 +941	+0.4%	+$49.6K	1.8%	28
2024 Q2	$12.9M	Buy	268,703 +2,764	+1%	+$131K	1.5%	30
2024 Q1	$13.2M	Sell	265,939 -38,844	-13%	-$2.05M	1.61%	30
2023 Q4	$13.7M	Sell	304,783 -3,259	-1%	-$144K	1.84%	23
2023 Q3	$13.4M	Buy	308,042 +90,907	+42%	+$4.01M	1.93%	26
2023 Q2	$9.23M	Buy	+217,135	New	+$9.9M	1.28%	34

Other funds holding CIEN

Dimensional Fund Advisors Austin, Texas $551B AUM 33.95% 1-Year Est. Return

Bank of New York Mellon New York $608B AUM 32.77% 1-Year Est. Return

Pictet Asset Management Carouge, Switzerland $106B AUM 32.76% 1-Year Est. Return

Wealth Enhancement Advisory Services Plymouth, Minnesota $67.3B AUM 21.9% 1-Year Est. Return

Citigroup New York $308B AUM 40.94% 1-Year Est. Return

Mitsubishi UFJ Asset Management Tokyo, Japan $194B AUM 32.2% 1-Year Est. Return

Robeco Institutional Asset Management Rotterdam, Netherlands $83.2B AUM 35.34% 1-Year Est. Return

Sumitomo Mitsui Trust Group Minato-Ku, Tokyo, Japan $174B AUM 33.96% 1-Year Est. Return

Assenagon Asset Management Senningerberg, Luxembourg $103B AUM 40.17% 1-Year Est. Return

FengHe Fund Management Singapore $2.06B AUM 157.75% 1-Year Est. Return

DDD Partners's CIEN Position: Q3 2026 in Review

DDD Partners increased its Ciena (CIEN) stake by 5,722% in Q3 2026, buying an estimated $14.9M and bringing the position to 39,242 shares worth $13.8M. The position accounts for 0.79% of the portfolio, ranked #45.

DDD Partners first reported a position in CIEN in Q2 2023 and has held it in 12 quarters since. The position peaked at $16.6M in Q3 2024. 502 funds tracked by Wall St. Rank hold CIEN as of Q3 2026.

DDD Partners held 39,242 shares of Ciena worth $13.8M as of Q3 2026.
DDD Partners bought 38,568 Ciena shares in Q3 2026, an estimated $14.9M.
Ciena made up 0.79% of DDD Partners's portfolio in Q3 2026, its #45 holding.
DDD Partners first reported a position in Ciena in Q2 2023 and has held it in 12 quarters since.
DDD Partners's Ciena position peaked at $16.6M in Q3 2024.
502 funds tracked by Wall St. Rank held Ciena as of Q3 2026.

Based on DDD Partners's 13F filing for Q3 2026, filed 2 Nov 2026.