Magnetar Financial’s Ciena CIEN Stock Holding History

Magnetar Financial’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	$377K	Buy	+769	New	+$392K	﹤0.01%	701
2025 Q2	–	Sell	-59,933	Closed	-$3.62M	–	929
2025 Q1	$3.62M	Buy	+59,933	New	+$4.74M	0.05%	209
2023 Q3	–	Sell	-16,457	Closed	-$699K	–	468
2023 Q2	$699K	Sell	16,457 -745	-4%	-$33.9K	0.02%	304
2023 Q1	$903K	Buy	+17,202	New	+$859K	0.02%	398
2021 Q4	–	Sell	-22,793	Closed	-$1.17M	–	1393
2021 Q3	$1.17M	Buy	22,793 +12,918	+131%	+$718K	0.01%	690
2021 Q2	$562K	Buy	9,875 +5,607	+131%	+$309K	0.01%	853
2021 Q1	$234K	Buy	+4,268	New	+$230K	﹤0.01%	957
2020 Q4	–	Sell	-8,315	Closed	-$330K	–	749
2020 Q3	$330K	Buy	+8,315	New	+$438K	0.01%	518
2020 Q1	–	Sell	-28,778	Closed	-$1.23M	–	492
2019 Q4	$1.23M	Buy	28,778 +6,136	+27%	+$234K	0.03%	198
2019 Q3	$888K	Sell	22,642 -3,094	-12%	-$130K	0.02%	259
2019 Q2	$1.06M	Buy	25,736 +2,519	+11%	+$96.9K	0.02%	162
2019 Q1	$867K	Buy	+23,217	New	+$902K	0.02%	182
2018 Q4	–	Sell	-21,256	Closed	-$664K	–	324
2018 Q3	$664K	Buy	+21,256	New	+$596K	0.01%	162
2014 Q2	–	Sell	-39,300	Closed	-$894K	–	185
2014 Q1	$894K	Buy	+39,300	New	+$924K	0.02%	169

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

Magnetar Financial's CIEN Position: Q2 2026 in Review

Magnetar Financial opened a new position in Ciena (CIEN) in Q2 2026: 769 shares worth $377K. The stake represents ﹤0.01% of the portfolio and ranks #701 among its holdings. This is a return to the name: Magnetar Financial previously reported a position in CIEN as recently as Q1 2025.

Magnetar Financial first reported a position in CIEN in Q1 2014 and has held it in 14 quarters since. The position peaked at $3.62M in Q1 2025. 1,226 funds tracked by Wall St. Rank hold CIEN as of Q2 2026.

Magnetar Financial held 769 shares of Ciena worth $377K as of Q2 2026.
Ciena was a new Magnetar Financial position in Q2 2026.
Ciena made up ﹤0.01% of Magnetar Financial's portfolio in Q2 2026, its #701 holding.
Magnetar Financial first reported a position in Ciena in Q1 2014 and has held it in 14 quarters since.
Magnetar Financial's Ciena position peaked at $3.62M in Q1 2025.
1,226 funds tracked by Wall St. Rank held Ciena as of Q2 2026.

Based on Magnetar Financial's 13F filing for Q2 2026, filed 14 Aug 2026.