CIENA CORP

Ticker: CIEN CUSIP: 171779309 Class: EQTY

MARSHALL WACE, LLP's Holding History (CIK: 0001318757)

Note: Option positions (PUT/CALL) are excluded.

Q4 2025

Shares 53,201 Value ($000) $12,442 Avg Close $194.00 Range $143.19 - $248.00

Q3 2025

Shares 189,393 Value ($000) $27,589 Avg Close $101.84 Range $76.89 - $146.53

Q2 2025

Shares 161,685 Value ($000) $13,150 Avg Close $71.73 Range $49.21 - $86.21

Q1 2025

Shares 561,173 Value ($000) $33,912 Avg Close $79.05 Range $58.04 - $101.44

Q4 2024

Shares 899,828 Value ($000) $76,314 Avg Close $71.76 Range $59.60 - $91.82

Q3 2024

Shares 20,849 Value ($000) $1,284 Avg Close $52.69 Range $44.89 - $63.06

Q2 2024

Shares 4,200 Value ($000) $202 Avg Close $47.46 Range $43.30 - $53.58

Q4 2023

Shares 77,691 Value ($000) $3,497 Avg Close $44.09 Range $39.94 - $48.36

Q1 2023

Shares 161,137 Value ($000) $8,463 Avg Close $49.92 Range $45.83 - $54.25

Q4 2022

Shares 316,900 Value ($000) $16,156 Avg Close $45.21 Range $38.33 - $52.51

Q3 2022

Shares 674,031 Value ($000) $27,251 Avg Close $48.05 Range $39.44 - $56.38

Q2 2022

Shares 468,223 Value ($000) $21,397 Avg Close $51.84 Range $41.63 - $61.78

Q1 2022

Shares 608,947 Value ($000) $36,922 Avg Close $65.45 Range $53.29 - $77.38

Q4 2021

Shares 154,529 Value ($000) $11,892 Avg Close $61.70 Range $51.01 - $78.28

Q3 2020

Shares 16,561 Value ($000) $657 Avg Close $52.62 Range $38.20 - $61.52

Q2 2020

Shares 161,412 Value ($000) $8,743 Avg Close $49.71 Range $38.00 - $57.19

Q1 2020

Shares 181,051 Value ($000) $7,208 Avg Close $41.03 Range $30.58 - $44.61

Q4 2019

Shares 234,216 Value ($000) $9,998 Avg Close $38.10 Range $33.22 - $43.97

Q3 2019

Shares 218,215 Value ($000) $8,560 Avg Close $41.92 Range $37.94 - $46.78

Q4 2018

Shares 117,417 Value ($000) $3,981 Avg Close $31.69 Range $28.23 - $36.55

Q4 2015

Shares 92,534 Value ($000) $1,915 Avg Close $22.97 Range $18.98 - $25.46

Q3 2015

Shares 16,447 Value ($000) $341 Avg Close $23.24 Range $17.97 - $26.50

Q2 2015

Shares 128,472 Value ($000) $3,042 Avg Close $22.84 Range $18.75 - $26.20

Q1 2015

Shares 178,112 Value ($000) $3,439 Avg Close $19.93 Range $17.86 - $21.47

Q4 2014

Shares 263,987 Value ($000) $5,124 Avg Close $16.70 Range $13.77 - $20.14

Q3 2014

Shares 201,162 Value ($000) $3,364 Avg Close $19.60 Range $16.66 - $22.46

Q2 2014

Shares 91,338 Value ($000) $1,978 Avg Close $20.54 Range $18.00 - $24.21

Q1 2014

Shares 18,902 Value ($000) $430 Avg Close $23.52 Range $21.41 - $27.16

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	53,201	$12,442	$194.00	$143.19 - $248.00
Q3 2025	189,393	$27,589	$101.84	$76.89 - $146.53
Q2 2025	161,685	$13,150	$71.73	$49.21 - $86.21
Q1 2025	561,173	$33,912	$79.05	$58.04 - $101.44
Q4 2024	899,828	$76,314	$71.76	$59.60 - $91.82
Q3 2024	20,849	$1,284	$52.69	$44.89 - $63.06
Q2 2024	4,200	$202	$47.46	$43.30 - $53.58
Q4 2023	77,691	$3,497	$44.09	$39.94 - $48.36
Q1 2023	161,137	$8,463	$49.92	$45.83 - $54.25
Q4 2022	316,900	$16,156	$45.21	$38.33 - $52.51
Q3 2022	674,031	$27,251	$48.05	$39.44 - $56.38
Q2 2022	468,223	$21,397	$51.84	$41.63 - $61.78
Q1 2022	608,947	$36,922	$65.45	$53.29 - $77.38
Q4 2021	154,529	$11,892	$61.70	$51.01 - $78.28
Q3 2020	16,561	$657	$52.62	$38.20 - $61.52
Q2 2020	161,412	$8,743	$49.71	$38.00 - $57.19
Q1 2020	181,051	$7,208	$41.03	$30.58 - $44.61
Q4 2019	234,216	$9,998	$38.10	$33.22 - $43.97
Q3 2019	218,215	$8,560	$41.92	$37.94 - $46.78
Q4 2018	117,417	$3,981	$31.69	$28.23 - $36.55
Q4 2015	92,534	$1,915	$22.97	$18.98 - $25.46
Q3 2015	16,447	$341	$23.24	$17.97 - $26.50
Q2 2015	128,472	$3,042	$22.84	$18.75 - $26.20
Q1 2015	178,112	$3,439	$19.93	$17.86 - $21.47
Q4 2014	263,987	$5,124	$16.70	$13.77 - $20.14
Q3 2014	201,162	$3,364	$19.60	$16.66 - $22.46
Q2 2014	91,338	$1,978	$20.54	$18.00 - $24.21
Q1 2014	18,902	$430	$23.52	$21.41 - $27.16