CIENA CORP

Ticker: CIEN CUSIP: 171779309 Class: EQTY

COMERICA BANK's Holding History (CIK: 0000901541)

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

Q4 2025

Shares 37,966 Value ($000) $8,879 Avg Close $194.00 Range $143.19 - $248.00

Q3 2025

Shares 41,077 Value ($000) $5,984 Avg Close $101.84 Range $76.89 - $146.53

Q2 2025

Shares 47,539 Value ($000) $3,866 Avg Close $71.73 Range $49.21 - $86.21

Q1 2025

Shares 46,957 Value ($000) $2,838 Avg Close $79.05 Range $58.04 - $101.44

Q4 2024

Shares 50,168 Value ($000) $4,255 Avg Close $71.76 Range $59.60 - $91.82

Q3 2024

Shares 90,430 Value ($000) $5,570 Avg Close $52.69 Range $44.89 - $63.06

Q2 2024

Shares 57,743 Value ($000) $2,782 Avg Close $47.46 Range $43.30 - $53.58

Q1 2024

Shares 62,078 Value ($000) $3,070 Avg Close $52.75 Range $44.22 - $63.24

Q4 2023

Shares 65,556 Value ($000) $2,951 Avg Close $44.09 Range $39.94 - $48.36

Q3 2023

Shares 98,273 Value ($000) $4,644 Avg Close $44.08 Range $40.10 - $50.72

Q4 2022

Shares 97,992 Value ($000) $5 Avg Close $45.21 Range $38.33 - $52.51

Q3 2022

Shares 102,701 Value ($000) $4,487 Avg Close $48.05 Range $39.44 - $56.38

Q2 2022

Shares 103,098 Value ($000) $5,077 Avg Close $51.84 Range $41.63 - $61.78

Q1 2022

Shares 104,500 Value ($000) $6,028 Avg Close $65.45 Range $53.29 - $77.38

Q4 2021

Shares 92,957 Value ($000) $6,008 Avg Close $61.70 Range $51.01 - $78.28

Q3 2021

Shares 93,419 Value ($000) $4,920 Avg Close $55.54 Range $50.34 - $58.85

Q2 2021

Shares 108,195 Value ($000) $5,946 Avg Close $55.12 Range $49.51 - $61.09

Q1 2021

Shares 109,663 Value ($000) $5,972 Avg Close $53.81 Range $47.52 - $57.57

Q4 2020

Shares 108,125 Value ($000) $5,950 Avg Close $44.43 Range $38.03 - $54.05

Q3 2020

Shares 94,497 Value ($000) $3,897 Avg Close $52.62 Range $38.20 - $61.52

Q2 2020

Shares 95,096 Value ($000) $5,226 Avg Close $49.71 Range $38.00 - $57.19

Q1 2020

Shares 90,356 Value ($000) $4,209 Avg Close $41.03 Range $30.58 - $44.61

Q4 2019

Shares 90,055 Value ($000) $3,799 Avg Close $38.10 Range $33.22 - $43.97

Q3 2019

Shares 88,953 Value ($000) $3,281 Avg Close $41.92 Range $37.94 - $46.78

Q2 2019

Shares 82,324 Value ($000) $3,631 Avg Close $38.48 Range $32.76 - $46.23

Q1 2019

Shares 91,646 Value ($000) $3,423 Avg Close $38.83 Range $32.85 - $45.70

Q4 2018

Shares 92,158 Value ($000) $3,631 Avg Close $31.69 Range $28.23 - $36.55

Q3 2018

Shares 90,223 Value ($000) $2,787 Avg Close $28.02 Range $25.19 - $32.33

Q2 2018

Shares 108,178 Value ($000) $2,915 Avg Close $25.40 Range $22.99 - $27.10

Q1 2018

Shares 112,508 Value ($000) $2,949 Avg Close $23.53 Range $20.71 - $27.73

Q4 2017

Shares 111,382 Value ($000) $2,404 Avg Close $21.20 Range $19.40 - $22.63

Q3 2017

Shares 109,836 Value ($000) $2,286 Avg Close $23.93 Range $20.86 - $26.92

Q2 2017

Shares 109,886 Value ($000) $2,913 Avg Close $23.96 Range $21.43 - $27.98

Q1 2017

Shares 108,585 Value ($000) $2,514 Avg Close $24.52 Range $22.73 - $26.84

Q4 2016

Shares 102,943 Value ($000) $2,525 Avg Close $21.85 Range $18.94 - $25.19

Q3 2016

Shares 95,917 Value ($000) $2,174 Avg Close $20.85 Range $17.59 - $23.60

Q2 2016

Shares 88,930 Value ($000) $1,803 Avg Close $18.11 Range $15.62 - $21.87

Q1 2016

Shares 86,777 Value ($000) $1,545 Avg Close $18.47 Range $16.32 - $21.14

Q4 2015

Shares 87,471 Value ($000) $1,589 Avg Close $22.97 Range $18.98 - $25.46

Q3 2015

Shares 87,404 Value ($000) $1,811 Avg Close $23.24 Range $17.97 - $26.50

Q2 2015

Shares 161,688 Value ($000) $3,828 Avg Close $22.84 Range $18.75 - $26.20

Q1 2015

Shares 74,580 Value ($000) $1,440 Avg Close $19.93 Range $17.86 - $21.47

Q4 2014

Shares 147,580 Value ($000) $2,864 Avg Close $16.70 Range $13.77 - $20.14

Q3 2014

Shares 76,216 Value ($000) $1,274 Avg Close $19.60 Range $16.66 - $22.46

Q2 2014

Shares 73,888 Value ($000) $1,600 Avg Close $20.54 Range $18.00 - $24.21

Q1 2014

Shares 81,216 Value ($000) $1,847 Avg Close $23.52 Range $21.41 - $27.16

Q4 2013

Shares 78,867 Value ($000) $1,887 Avg Close $23.81 Range $20.93 - $27.94

Q3 2013

Shares 87,316 Value ($000) $2,183 Avg Close $22.53 Range $19.37 - $26.17

Q2 2013

Shares 83,410 Value ($000) $1,621 Avg Close $16.65 Range $14.14 - $20.60

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	37,966	$8,879	$194.00	$143.19 - $248.00
Q3 2025	41,077	$5,984	$101.84	$76.89 - $146.53
Q2 2025	47,539	$3,866	$71.73	$49.21 - $86.21
Q1 2025	46,957	$2,838	$79.05	$58.04 - $101.44
Q4 2024	50,168	$4,255	$71.76	$59.60 - $91.82
Q3 2024	90,430	$5,570	$52.69	$44.89 - $63.06
Q2 2024	57,743	$2,782	$47.46	$43.30 - $53.58
Q1 2024	62,078	$3,070	$52.75	$44.22 - $63.24
Q4 2023	65,556	$2,951	$44.09	$39.94 - $48.36
Q3 2023	98,273	$4,644	$44.08	$40.10 - $50.72
Q4 2022	97,992	$5	$45.21	$38.33 - $52.51
Q3 2022	102,701	$4,487	$48.05	$39.44 - $56.38
Q2 2022	103,098	$5,077	$51.84	$41.63 - $61.78
Q1 2022	104,500	$6,028	$65.45	$53.29 - $77.38
Q4 2021	92,957	$6,008	$61.70	$51.01 - $78.28
Q3 2021	93,419	$4,920	$55.54	$50.34 - $58.85
Q2 2021	108,195	$5,946	$55.12	$49.51 - $61.09
Q1 2021	109,663	$5,972	$53.81	$47.52 - $57.57
Q4 2020	108,125	$5,950	$44.43	$38.03 - $54.05
Q3 2020	94,497	$3,897	$52.62	$38.20 - $61.52
Q2 2020	95,096	$5,226	$49.71	$38.00 - $57.19
Q1 2020	90,356	$4,209	$41.03	$30.58 - $44.61
Q4 2019	90,055	$3,799	$38.10	$33.22 - $43.97
Q3 2019	88,953	$3,281	$41.92	$37.94 - $46.78
Q2 2019	82,324	$3,631	$38.48	$32.76 - $46.23
Q1 2019	91,646	$3,423	$38.83	$32.85 - $45.70
Q4 2018	92,158	$3,631	$31.69	$28.23 - $36.55
Q3 2018	90,223	$2,787	$28.02	$25.19 - $32.33
Q2 2018	108,178	$2,915	$25.40	$22.99 - $27.10
Q1 2018	112,508	$2,949	$23.53	$20.71 - $27.73
Q4 2017	111,382	$2,404	$21.20	$19.40 - $22.63
Q3 2017	109,836	$2,286	$23.93	$20.86 - $26.92
Q2 2017	109,886	$2,913	$23.96	$21.43 - $27.98
Q1 2017	108,585	$2,514	$24.52	$22.73 - $26.84
Q4 2016	102,943	$2,525	$21.85	$18.94 - $25.19
Q3 2016	95,917	$2,174	$20.85	$17.59 - $23.60
Q2 2016	88,930	$1,803	$18.11	$15.62 - $21.87
Q1 2016	86,777	$1,545	$18.47	$16.32 - $21.14
Q4 2015	87,471	$1,589	$22.97	$18.98 - $25.46
Q3 2015	87,404	$1,811	$23.24	$17.97 - $26.50
Q2 2015	161,688	$3,828	$22.84	$18.75 - $26.20
Q1 2015	74,580	$1,440	$19.93	$17.86 - $21.47
Q4 2014	147,580	$2,864	$16.70	$13.77 - $20.14
Q3 2014	76,216	$1,274	$19.60	$16.66 - $22.46
Q2 2014	73,888	$1,600	$20.54	$18.00 - $24.21
Q1 2014	81,216	$1,847	$23.52	$21.41 - $27.16
Q4 2013	78,867	$1,887	$23.81	$20.93 - $27.94
Q3 2013	87,316	$2,183	$22.53	$19.37 - $26.17
Q2 2013	83,410	$1,621	$16.65	$14.14 - $20.60