Great Lakes Advisors’s Ciena CIEN Stock Holding History

Great Lakes 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 Q2	$256K	Sell	522 -38	-7%	-$19.4K	﹤0.01%	742
2026 Q1	$217K	Buy	+560	New	+$171K	﹤0.01%	758
2016 Q2	–	Sell	-79,504	Closed	-$1.51M	–	556
2016 Q1	$1.51M	Sell	79,504 -117,939	-60%	-$2.18M	0.04%	299
2015 Q4	$4.08M	Buy	197,443 +20,038	+11%	+$460K	0.12%	153
2015 Q3	$3.68M	Buy	177,405 +21,816	+14%	+$507K	0.11%	153
2015 Q2	$3.68M	Buy	155,589 +57,993	+59%	+$1.32M	0.11%	161
2015 Q1	$1.89M	Buy	+97,596	New	+$1.94M	0.06%	244

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 $3.38T AUM 44.17% 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

Great Lakes Advisors's CIEN Position: Q2 2026 in Review

Great Lakes Advisors reduced its Ciena (CIEN) stake by 6.8% in Q2 2026, selling an estimated $19.4K and leaving 522 shares worth $256K. The position accounts for ﹤0.01% of the portfolio, ranked #742.

Great Lakes Advisors first reported a position in CIEN in Q1 2015 and has held it in 7 quarters since. The position peaked at $4.08M in Q4 2015. 1,226 funds tracked by Wall St. Rank hold CIEN as of Q2 2026.

Great Lakes Advisors held 522 shares of Ciena worth $256K as of Q2 2026.
Great Lakes Advisors sold 38 Ciena shares in Q2 2026, an estimated $19.4K.
Ciena made up ﹤0.01% of Great Lakes Advisors's portfolio in Q2 2026, its #742 holding.
Great Lakes Advisors first reported a position in Ciena in Q1 2015 and has held it in 7 quarters since.
Great Lakes Advisors's Ciena position peaked at $4.08M in Q4 2015.
1,226 funds tracked by Wall St. Rank held Ciena as of Q2 2026.

Based on Great Lakes Advisors's 13F filing for Q2 2026, filed 10 Aug 2026.