CIENA CORP

Ticker: CIEN CUSIP: 171779309 Class: EQTY

NEW YORK STATE TEACHERS RETIREMENT SYSTEM's Holding History (CIK: 0000314969)

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

Q4 2025

Shares 141,685 Value ($000) $33 Avg Close $194.00 Range $143.19 - $248.00

Q3 2025

Shares 143,431 Value ($000) $21 Avg Close $101.84 Range $76.89 - $146.53

Q2 2025

Shares 148,827 Value ($000) $12 Avg Close $71.73 Range $49.21 - $86.21

Q1 2025

Shares 148,827 Value ($000) $9 Avg Close $79.05 Range $58.04 - $101.44

Q4 2024

Shares 150,919 Value ($000) $13 Avg Close $71.76 Range $59.60 - $91.82

Q3 2024

Shares 151,019 Value ($000) $9 Avg Close $52.69 Range $44.89 - $63.06

Q2 2024

Shares 169,852 Value ($000) $8 Avg Close $47.46 Range $43.30 - $53.58

Q1 2024

Shares 168,719 Value ($000) $8 Avg Close $52.75 Range $44.22 - $63.24

Q4 2023

Shares 174,040 Value ($000) $8 Avg Close $44.09 Range $39.94 - $48.36

Q3 2023

Shares 180,357 Value ($000) $9 Avg Close $44.08 Range $40.10 - $50.72

Q2 2023

Shares 190,471 Value ($000) $8 Avg Close $45.54 Range $40.84 - $52.67

Q1 2023

Shares 191,071 Value ($000) $10 Avg Close $49.92 Range $45.83 - $54.25

Q4 2022

Shares 194,297 Value ($000) $10 Avg Close $45.21 Range $38.33 - $52.51

Q3 2022

Shares 208,220 Value ($000) $8,418 Avg Close $48.05 Range $39.44 - $56.38

Q2 2022

Shares 218,627 Value ($000) $9,991 Avg Close $51.84 Range $41.63 - $61.78

Q1 2022

Shares 221,627 Value ($000) $13,437 Avg Close $65.45 Range $53.29 - $77.38

Q4 2021

Shares 221,370 Value ($000) $17,039 Avg Close $61.70 Range $51.01 - $78.28

Q3 2021

Shares 204,248 Value ($000) $10,488 Avg Close $55.54 Range $50.34 - $58.85

Q2 2021

Shares 191,324 Value ($000) $10,884 Avg Close $55.12 Range $49.51 - $61.09

Q1 2021

Shares 213,924 Value ($000) $11,706 Avg Close $53.81 Range $47.52 - $57.57

Q4 2020

Shares 225,780 Value ($000) $11,932 Avg Close $44.43 Range $38.03 - $54.05

Q3 2020

Shares 224,580 Value ($000) $8,914 Avg Close $52.62 Range $38.20 - $61.52

Q2 2020

Shares 226,180 Value ($000) $12,250 Avg Close $49.71 Range $38.00 - $57.19

Q1 2020

Shares 218,580 Value ($000) $8,702 Avg Close $41.03 Range $30.58 - $44.61

Q4 2019

Shares 219,080 Value ($000) $9,353 Avg Close $38.10 Range $33.22 - $43.97

Q3 2019

Shares 206,680 Value ($000) $8,108 Avg Close $41.92 Range $37.94 - $46.78

Q2 2019

Shares 206,680 Value ($000) $8,501 Avg Close $38.48 Range $32.76 - $46.23

Q1 2019

Shares 206,680 Value ($000) $7,717 Avg Close $38.83 Range $32.85 - $45.70

Q4 2018

Shares 207,079 Value ($000) $7,022 Avg Close $31.69 Range $28.23 - $36.55

Q3 2018

Shares 207,519 Value ($000) $6,483 Avg Close $28.02 Range $25.19 - $32.33

Q2 2018

Shares 207,722 Value ($000) $5,507 Avg Close $25.40 Range $22.99 - $27.10

Q1 2018

Shares 202,622 Value ($000) $5,248 Avg Close $23.53 Range $20.71 - $27.73

Q4 2017

Shares 166,422 Value ($000) $3,483 Avg Close $21.20 Range $19.40 - $22.63

Q3 2017

Shares 166,422 Value ($000) $3,656 Avg Close $23.93 Range $20.86 - $26.92

Q2 2017

Shares 166,422 Value ($000) $4,164 Avg Close $23.96 Range $21.43 - $27.98

Q1 2017

Shares 166,422 Value ($000) $3,929 Avg Close $24.52 Range $22.73 - $26.84

Q4 2016

Shares 166,422 Value ($000) $4,062 Avg Close $21.85 Range $18.94 - $25.19

Q3 2016

Shares 166,422 Value ($000) $3,628 Avg Close $20.85 Range $17.59 - $23.60

Q2 2016

Shares 166,422 Value ($000) $3,120 Avg Close $18.11 Range $15.62 - $21.87

Q1 2016

Shares 177,922 Value ($000) $3,384 Avg Close $18.47 Range $16.32 - $21.14

Q4 2015

Shares 177,922 Value ($000) $3,681 Avg Close $22.97 Range $18.98 - $25.46

Q3 2015

Shares 177,922 Value ($000) $3,687 Avg Close $23.24 Range $17.97 - $26.50

Q2 2015

Shares 166,422 Value ($000) $3,941 Avg Close $22.84 Range $18.75 - $26.20

Q1 2015

Shares 166,422 Value ($000) $3,214 Avg Close $19.93 Range $17.86 - $21.47

Q4 2014

Shares 166,422 Value ($000) $3,230 Avg Close $16.70 Range $13.77 - $20.14

Q3 2014

Shares 166,422 Value ($000) $2,783 Avg Close $19.60 Range $16.66 - $22.46

Q2 2014

Shares 166,422 Value ($000) $3,605 Avg Close $20.54 Range $18.00 - $24.21

Q1 2014

Shares 166,422 Value ($000) $3,784 Avg Close $23.52 Range $21.41 - $27.16

Q4 2013

Shares 166,422 Value ($000) $3,982 Avg Close $23.81 Range $20.93 - $27.94

Q3 2013

Shares 166,422 Value ($000) $4,162 Avg Close $22.53 Range $19.37 - $26.17

Q2 2013

Shares 166,422 Value ($000) $3,234 Avg Close $16.65 Range $14.14 - $20.60

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	141,685	$33	$194.00	$143.19 - $248.00
Q3 2025	143,431	$21	$101.84	$76.89 - $146.53
Q2 2025	148,827	$12	$71.73	$49.21 - $86.21
Q1 2025	148,827	$9	$79.05	$58.04 - $101.44
Q4 2024	150,919	$13	$71.76	$59.60 - $91.82
Q3 2024	151,019	$9	$52.69	$44.89 - $63.06
Q2 2024	169,852	$8	$47.46	$43.30 - $53.58
Q1 2024	168,719	$8	$52.75	$44.22 - $63.24
Q4 2023	174,040	$8	$44.09	$39.94 - $48.36
Q3 2023	180,357	$9	$44.08	$40.10 - $50.72
Q2 2023	190,471	$8	$45.54	$40.84 - $52.67
Q1 2023	191,071	$10	$49.92	$45.83 - $54.25
Q4 2022	194,297	$10	$45.21	$38.33 - $52.51
Q3 2022	208,220	$8,418	$48.05	$39.44 - $56.38
Q2 2022	218,627	$9,991	$51.84	$41.63 - $61.78
Q1 2022	221,627	$13,437	$65.45	$53.29 - $77.38
Q4 2021	221,370	$17,039	$61.70	$51.01 - $78.28
Q3 2021	204,248	$10,488	$55.54	$50.34 - $58.85
Q2 2021	191,324	$10,884	$55.12	$49.51 - $61.09
Q1 2021	213,924	$11,706	$53.81	$47.52 - $57.57
Q4 2020	225,780	$11,932	$44.43	$38.03 - $54.05
Q3 2020	224,580	$8,914	$52.62	$38.20 - $61.52
Q2 2020	226,180	$12,250	$49.71	$38.00 - $57.19
Q1 2020	218,580	$8,702	$41.03	$30.58 - $44.61
Q4 2019	219,080	$9,353	$38.10	$33.22 - $43.97
Q3 2019	206,680	$8,108	$41.92	$37.94 - $46.78
Q2 2019	206,680	$8,501	$38.48	$32.76 - $46.23
Q1 2019	206,680	$7,717	$38.83	$32.85 - $45.70
Q4 2018	207,079	$7,022	$31.69	$28.23 - $36.55
Q3 2018	207,519	$6,483	$28.02	$25.19 - $32.33
Q2 2018	207,722	$5,507	$25.40	$22.99 - $27.10
Q1 2018	202,622	$5,248	$23.53	$20.71 - $27.73
Q4 2017	166,422	$3,483	$21.20	$19.40 - $22.63
Q3 2017	166,422	$3,656	$23.93	$20.86 - $26.92
Q2 2017	166,422	$4,164	$23.96	$21.43 - $27.98
Q1 2017	166,422	$3,929	$24.52	$22.73 - $26.84
Q4 2016	166,422	$4,062	$21.85	$18.94 - $25.19
Q3 2016	166,422	$3,628	$20.85	$17.59 - $23.60
Q2 2016	166,422	$3,120	$18.11	$15.62 - $21.87
Q1 2016	177,922	$3,384	$18.47	$16.32 - $21.14
Q4 2015	177,922	$3,681	$22.97	$18.98 - $25.46
Q3 2015	177,922	$3,687	$23.24	$17.97 - $26.50
Q2 2015	166,422	$3,941	$22.84	$18.75 - $26.20
Q1 2015	166,422	$3,214	$19.93	$17.86 - $21.47
Q4 2014	166,422	$3,230	$16.70	$13.77 - $20.14
Q3 2014	166,422	$2,783	$19.60	$16.66 - $22.46
Q2 2014	166,422	$3,605	$20.54	$18.00 - $24.21
Q1 2014	166,422	$3,784	$23.52	$21.41 - $27.16
Q4 2013	166,422	$3,982	$23.81	$20.93 - $27.94
Q3 2013	166,422	$4,162	$22.53	$19.37 - $26.17
Q2 2013	166,422	$3,234	$16.65	$14.14 - $20.60